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| 1 | Analysis and Design of Four-Plate Capacitive Wireless Power Transfer System for Undersea Applications显示文摘This paper presents a four-plate undersea capacitive wireless power transfer(CPT)system for underwater applications such as autonomous underwater vehicles(AUVs).Generally,a CPT system transfers the power based on electric fields.The complex resonant compensation networks are used to make the CPT system work in the resonant condition.The resonant voltage is always very high.It will be a big challenge to the human safety.In this paper,a virtual electrons periodic reciprocating flow theory is proposed for the CPT system.In one switching cycle,the electrons firstly flow in the forward direction through the forward path and then flow in the inverse direction through the inverse path.The CPT system has been deeply studied with the vacuum dielectric or the air dielectric.However,for the CPT system,there are few papers to show the underwater application.In this paper,an undersea four-plate CPT system is designed and studied in the underwater condition.The two coupling capacitors and other elements of the CPT system could build a closed-loop path.A small value inductor is adapted as a resonant compensation network for the four-plate CPT system.The DC voltage is inverted to the AC voltage in the primary side with the single-phase full-bridge inverter.The resonant voltage is rectified to the DC voltage in the secondary side with the single-phase full-bridge diode rectifier.A 100 W power level CPT system is constructed to verify the theory analysis and the calculation.The theory analysis is verified by the simulated and experimental results.The stable output voltage and load power are achieved in this paper. | Lei Yang Yuanqi Zhang Xiaojie Li Jiale Jian Zhe Wang Jingjing Huang Li Ma Xiangqian Tong | 2021 | CES Transactions on Electrical Machines and Systems2021，5，3： | 9 |
| 2 | Design and key parameter optimization of an agitated soybean seed metering device with horizontal seed filling显示文摘Since the low seed filling speed of mechanical seed metering devices reduces the low qualified rate of seed spacing during high-speed practices,it is significant to design agitated seed metering devices with horizontal seed filling that are suitable for high-speed practices.The combination of horizontal seed filling and agitated seed filling can accelerate the seed filling of mechanical seed metering devices,and improve the qualified rate of seed spacing during high-speed practices.In this study,theoretical analysis,discrete element method-based simulation and indoor bench test verification were conducted to investigate how key parameters of the agitated seed metering device with horizontal seed filling(angles,installation position and number of agitating plates,diameters of convex spoons)would affect the characteristics of soybean seed movement,seed number and seeding performance(qualified index,multiple index,missing seeding index)under different working speeds.Computer-based simulation,test design and regression analysis were combined to analyze the population moving rules and optimize the design parameters of seed metering devices.Based on the test scheme as designed,simulations were conducted on Fluent EDEM,and the optimal angle of the agitating plates was determined by analyzing the population migrating rules.Regression equations were established through the regression of test results,and used to find out the optimal design parameters(diameter of convex spoon,positions and number of agitating plates)of seed metering devices.Then the optimal parameter combination among different working conditions was determined that the angle,position and number of agitating plates were 30°,24.4 mm,and 13,respectively,and the diameter of convex spoon was 11.0 mm.With the optimal parameter combination and at the seeding speed of 12 km/h,the qualified index,multiple index and missing seeding index were 93.1%,2.1%and 4.8%,respectively.Under high-speed practices,the new seed metering device was not significantly different from the pneumatic seed metering device,but significantly outperformed the mechanical seed metering device. | Honglei Jia Yulong Chen Jiale Zhao Mingzhuo Guo Dongyan Huang Jian Zhuang | 2018 | International Journal of Agricultural and Biological Engineering2018，11，2： | 8 |
| 3 | Cobalt atoms dispersed on hierarchical carbon nitride support as the cathode electrocatalyst for high-performance lithium-polysulfide batteries显示文摘Lithium-sulfur batteries are promising candidates for next-generation energy storage but are confronted with several challenges. One of the possible solutions is to design proper cathode electrocatalysts to accelerate the redox interconversion of solvated polysulfide intermediates. Herein, we report cobalt atoms dispersed on hierarchical carbon nitride support as an effective cathode electrocatalyst for lithium-polysulfide batteries. The electrocatalyst material is prepared from the simple reaction between melamine and cyanuric acid in the presence of Co^2+, followed by the Ar annealing. The product has a unique hierarchical structure consisting of many thin and porous C3 N4 nanosheets finely dispersed with Co atoms. The atomic dispersion of Co species is confirmed by X-ray absorption experiments.Electrochemical measurements reveal that it can promote the interconversion of polysulfides. As a result,batteries using this cathode electrocatalyst achieve large capacity($1400 mAh/g at 1.6 mA/cm^2), good rate performance($800 mAh/g at 12.8 mA/cm^2) and impressive cycling stability under different current densities and different sulfur loadings. | Jialing Wu Junmei Chen Yang Huang Kun Feng Jun Deng Wei Huang Yunling Wu Jun Zhong Yanguang Li | 2019 | Science Bulletin2019，64，24： | 7 |
| 4 | High N-doped hierarchical porous carbon networks with expanded interlayers for efficient sodium storage显示文摘Sodium-ion batteries (SIBs) have been attracting considerable attention as a promising candidate for large-scale energy storage because of the abundance and low-cost of sodium resources. However, lack of appropriate anode materials impedes further applications. Herein, a novel self-template strategy is designed to synthesize uniform flowerlike N-doped hierarchical porous carbon networks (NHPCN) with high content of N (15.31 at.%) assembled by ultrathin nanosheets via a self-synthesized single precursor and subsequent thermal annealing. Relying on the synergetic coordination of benzimidazole and 2-methylimidazole with metal ions to produce a flowerlike network, a self-formed single precursor can be harvested. Due to the structural and compositional advantages, including the high N doping, the expanded interlayer spacing, the ultrathin two-dimensional nano-sized subunits, and the three-dimensional porous network structure, these unique NHPCN flowers deliver ultrahigh reversible capacities of 453.7 mAh·g^−1 at 0.1 A·g^−1 and 242.5 mAh·g^−1 at 1 A·g^−1 for 2,500 cycles with exceptional rate capability of 5 A·g^−1 with reversible capacities of 201.2 mAh·g^−1. The greatly improved sodium storage performance of NHPCN confirms the importance of reasonable engineering and synthesis of hierarchical carbon with unique structures. | Dongqin Su Man Huang Junhao Zhang Xingmei Guo Jiale Chen Yanchun Xue Aihua Yuan Qinghong Kong | 2020 | Nano Research2020，13，10： | 5 |
| 5 | Analysis and experiment on cutting performances of high-stubble maize stalks显示文摘In the cold areas of Northeast China,maize high-stubble cutting is a novel stalk conservation tillage method,in which the maize stalks are under a unilaterally-fixed no-support cutting status.Thus,reducing the cutting resistance and power consumption of maize stalks under this status is very significant for the development of high-efficiency high-stubble cutting devices.Based on a self-designed testing system that highly restored the maize high-stubble cutting conditions and by means of experimental design and mathematic statistics,the effects of working parameters(blade angle,blade shape,cutting speed and cutting angle)on the maximum cutting resistance and power consumption were studied.By analyzing stress conditions during the stalk cutting process,six mathematic models were built to express the relationships between individual factors and the maximum cutting resistance or cutting power consumption.Through model optimization,the parameter combination for optimal cutting performance of maize stalks under unilaterally-fixed no-support cutting status was obtained:blade angle is 18°,blade shape is isosceles triangle,cutting speed is 9.5 m/s,and cutting angle is 75°.Field validation experiments under this parameter combination showed that the maximum cutting resistance was(55.23±3.50)N(declined by 11.04%),and power consumption was(11.41±1.04)J(declined by 16.65%).The research findings can be a reference for the design and development of maize high-stubble cutting devices. | Zhao Jiale Huang Dongyan Jia Honglei Zhuang Jian Guo Mingzhuo | 2017 | International Journal of Agricultural and Biological Engineering2017，10，1： | 5 |
| 6 | A DISCUSSION ON ENGLISH TEACHING METHODOLOGY显示文摘1 Changes in College-English TeachingMethodology:a NecessityThere used to be an idea among some people thatteaching College-English for non-English-major stu-dents was much easier than for English-major stu-dents.There might have been something in this pointof view then,but things are definitely undergoing achange now.If we make a comparison between theNew Teaching Program for Non-English-major Col-lege Students and the Teaching Program for | Huang Jialing Chengdu University of Traditional Chinese Medicine | 2000 | Chinese Journal of Applied Linguistics2000，23，2： | 4 |
| 7 | Design of bionic locust mouthparts stubble cutting device显示文摘Given the technical problems of low maize stubble breaking efficiency,large cutting torque and high power consumption faced during springtime no-till planting in Northeast China,we designed a high-performance coupling bionic stubble cutting device capable by integrating the structure(multi-segment and serrate)and cutting mode(isokinetic and symmetrical)of locust mouthparts.Methods of bionic construction,mechanism design,theoretical analysis,parameter optimization,Arduino systems and intelligent control were combined to design a planetary gear mechanism and an intelligent speed control system.In particular,the bionic cutting blade could reconstruct the multi-segment and serrate structure of locust mouthparts,while the planetary gear mechanism and the intelligent speed control system jointly comprised the bionic drive system,which could simulate the isokinetic and symmetrical cutting mode,thereby bionically coupling morphological structures and movement patterns.Analysis of comparative tests showed the coupling bionic cutting device could reduce the cutting torque by 26.6%-31.6%and the power consumption by 21.9%-26.1%.This work confirmed that coupling bionic method can significantly improve the stubble cutting efficiency,which was a valuable contribution to the design of stubble cutting device for no-till planter. | Jiale Zhao Mingzhuo Guo Yun Lu Dongyan Huang Jian Zhuang | 2020 | International Journal of Agricultural and Biological Engineering2020，13，1： | 4 |
| 8 | Cloning of a microphthalmia-associated transcription factor gene and its functional analysis in nacre formation and melanin synthesis in Hyriopsis cumingii显示文摘Microphthalmia-associated transcription factor(MITF)is an essential transactivator in melanin synthesis.To characterize the role of MITF in the pearl mussel Hyriopsis cumingii,the MITF homolog of H.cumingii was isolated.The full-length HcMitf cDNA consisted of a 1332-bp with an open reading frame that encode for a 443 amino acid protein that contain a conserved basic helix-loop-helix zipper domain.The HcMitf was found to widespread tissue distribution but expression was higher in purple mussels than in white mussels,mostly in mantle,liver,kidney,gill,and foot with the exception of the adductor mussel.HcMitf and its downstream gene tyrosinase(HcTyr)were highly expressed at the nacre deposition stage after implantation of mantle tissue to produce pearls.Using RNA interference,the expression of HcMitf was reduced by 78%(P<0.01)and expression of HcTyr was also significantly suppressed and consequently total melanin content was decreased(P<0.05).The results suggest that HcMitf plays an important role in melanin synthesis,nacre formation and shell pigmentation in the H.cumingii. | Jiexuan Shen Dandan Huang Chaohu Sun Jiale Li Zhiyi Bai | 2018 | Aquaculture and Fisheries2018，3，6： | 2 |
| 9 | Loss of algal Proton Gradient Regulation 5 increases reactive oxygen species scavenging and H2 evolution显示文摘We have identified hpm91, a Chlamydomonas mutant lacking Proton Gradient Regulation5(PGR5)capable of producing hydrogen(H2) for 25 days with more than 30-fold yield increase compared to wild type.Thus, hpm91 displays a higher capacity of H2 production than a previously characterized pgr5 mutant. Physiological and biochemical characterization of hpm91 reveal that the prolonged H2 production is due to enhanced stability of PSII, which correlates with increased reactive oxygen species(ROS) scavenging capacity during sulfur deprivation. This anti-ROS response appears to protect the photosynthetic electron transport chain from photooxidative damage and thereby ensures electron supply to the hydrogenase. | Mei Chen Jin Zhang Lei Zhao Jiale Xing Lianwei Peng Tingyun Kuang Jean-David Rochaix Fang Huang | 2016 | Journal of Integrative Plant Biology2016，58，12： | 2 |
| 10 | Numerical Simulation of Microwaveassisted Depolymerization of Kraft Lignin显示文摘Kraft lignin has the potential to replace traditional fossil resources for the preparation of high-value chemicals because it is rich in aromatic rings and active functional groups.An effective method for the pyrolysis of kraft lignin into chemicals/fuels is microwave-assisted depolymerization.A simulation model is urgently needed to illustrate the coupling effect and mechanism of lignin conversion during the depolymerization process.In this study,COMSOL Multiphysics was used to simulate the microwave-assisted depolymerization process.The results showed that microwave power had a significant effect on the electric field and temperature distribution in the microwave cavity,while the reaction time had little effect on the electric field.The effect of the nitrogen flow rate on the electric field and temperature was negligible.The intensity of the electric field,heating rate of lignin,and final temperature of lignin depolymerization increased with increasing microwave power. | Zhenhao Ma Wenliang Wang Jiale Huang Yujun Ma Hui Miao Yishuai Fu Xiaoxiao Ren | 2021 | Paper And Biomaterials2021，6，4： | 2 |
| 11 | Solvent-enhanced Depolymerization of Lignin under Microwave Irradiation显示文摘Lignin is considered an ideal natural material for the production of sustainable monophenols.In this study,a microwave-assisted depolymerization(MAD)strategy was developed.The introduction of solvent vapors in the dynamic vapor flow reaction system was performed to enhance the lignin conversion efficiency.The results showed that no liquid products were generated from the MAD of lignin without solvent vapors.With the introduction of solvents(CH_(3)OH,HCHO,HCOOH,and CH_(2)Cl_(2)),liquid products appeared(especially with CH_(2)Cl_(2),which had the highest yield of 41.9 wt%).Results from gas chromatography/mass spectrometry of liquid products showed that seven kinds of compounds,including guaiacols,phenols,syringols,methoxyphenyls,heterocycles,esters,and aromatics were identified.CH_(2)Cl_(2) can significantly enhance the production of monophenols(guaiacols,phenols,and syringols).The introduction of these solvent vapors can also facilitate the generation of porous char with high Brunauer-Emmett-Teller specific surface areas.Some carbon nanospheres deposited on the surface of the char were obtained with the assistance of CH_(2)Cl_(2).This study provides a facile method for the utilization of lignin in the field of bio-based fine chemicals. | Wenliang Wang Jiale Huang Xingjin Zhao Xiaoxiao Ren Hui Miao | 2021 | Paper And Biomaterials2021，6，3： | 2 |
| 12 | Facile synthesis of porous Pd nanoflowers with excellent catalytic activity towards CO oxidation显示文摘Microorganism-mediated,hexadecyltrimethylammonium chloride(CTAC)-directed(MCD) method was employed in this work to synthesize Pd nanoflowers(PdNFs).Proper Pichia pastoris cells(PPCs) dosage,ascorbic acid(AA),Pd(NO_3)_2 and CTAC concentrations were essential for the growth of the PdNFs.The size of the assynthesized PdNFs could be tuned by adjusting the amount of Pd(NO_3)_2 solution and dosage of PPCs used.Characterization techniques such as X-ray diffraction,transmission electron microscopy,and X-ray photoelectron spectroscopy were used to verify the nature of the PdNFs.Finally the PdNF/PPC nanocomposites were immobilized onto TiO_2 supports to obtain bio-PdNF/TiO_2 catalysts which showed excellent catalytic activity for CO oxidation,obtaining 100%conversion at 100℃ and remaining stable over a period of 52 h of reaction time. | Tareque Odoom-Wubah Mingming Du Williams Brown Osei Daohua Sun Jiale Huang Qingbiao Li | 2015 | Chinese Journal of Chemical Engineering2015，23，11： | 2 |
| 13 | Construction of MoS_(2) nanoarrays and MoO_(3) nanobelts:Two efficient adsorbents for removal of Pb(Ⅱ),Au(Ⅲ) and Methylene Blue显示文摘Toxic heavy metal ions,valuable noble metal ions and organic dyes are significant concerns in wastewater treatment.In this work,MoO_(3) nanobelts(MoO_(3) NBs)prepared by solvothermal method and MoS_(2) nanoarrays(MoS_(2) NAs)constructed using MoO_(3) NBs precursor were proposed to effectively remove heavy/noble metal ions and organic dyes,such as Pb(II),Au(III)and Methylene Blue(MB).The two adsorbents exhibited the excellent adsorption capacity towards Pb(II),Au(III)and MB.The maximum removal capacity of Pb(II)and MB on MoO_(3) NBs was 684.93 mg/g and 1408 mg/g,respectively,whereas that of Au(III)and MB on MoS_(2) NAs was 1280.2 mg/g and 768 mg/g,respectively.Furthermore,the thermodynamic parameters were calculated from the temperature-dependent curves,suggesting that the removal of Pb(II)and Au(III)on both adsorbents was spontaneous and endothermic.The new adsorbents introduced here were high adsorption activity,ease of fabrication,high scalability,good chemical stability,great repeatability and abundant and cheap supply,which were highly attractive for wastewater treatment. | Wen Zhou Jiale Deng Zhen Qin Ruihua Huang Yi Wang Shanshan Tong | 2022 | Journal of Environmental Sciences2022，34，1： | 2 |
| 14 | Variable elliptical vibrating screen: Particles kinematics and industrial application显示文摘Traditional vibrating screen usually adopts the linear centralized excitation mode,which causes the difficulty in particles loosening and low screening efficiency.The variable elliptical vibrating screen(VEVS)trajectory is regulated to adapt the material mass along the direction of the screen length,improving the particles distribution as well as the screening efficiency.In this work,a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process.An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude.The materials kinetic characteristics were studied by using high-speed camera during screening process.Compared with equal-amplitude screen(EAS),the material moving velocity was increased by 13.03%on the first half but decreased by 3.52% on the second half,and the total screening time was reduced by 9.42% by using VEVS.In addition,-6 mm screening test was carried out.At the length of VEVS equaled to 1.2 m,the screening efficiency and the total misplaced material content were 92.50% and 2.90%,respectively.However,the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process.Furthermore,when external moisture is 5.96%,the screening efficiency of VEVS could reach 86.95%.The 2 TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length.The areas of single layer and double layer were 56.5 and 113 m~2,respectively.In industrial production,the processing capacity was 2500-3000 t/h and the screening efficiency was larger than 90%. | Chenlong Duan Jiale Yuan Miao Pan Tao Huang Haishen Jiang Yuemin Zhao Jinpeng Qiao Weinan Wang Shijie Yu Jiawang Lu | 2021 | International Journal of Mining Science and Technology2021，31，6： | 2 |
| 15 | State of arts on the bio-synthesis of noble metal nanoparticles and their biological application显示文摘Nanomaterials are materials in which at least one of the dimensions of the particles is 100 nm and below.There are many types of nanomaterials,but noble metal nanoparticles are of interest due to their uniquely large surface-to-volume ratio,high surface area,optical and electronic properties,high stability,easy synthesis,and tunable surface functionalization.More importantly,noble metal nanoparticles are known to have excellent compatibility with bio-materials,which is why they are widely used in biological applications.The synthesis method of noble metal nanoparticles conventionally involves the reduction of the noble metal salt precursor by toxic reaction agents such as NaBH4,hydrazine,and formaldehyde.This is a major drawback for researchers involved in biological application researches.Hence,the bio-synthesis of noble metal nanoparticles(NPs)by bio-materials via bio-reduction provides an alternative method to synthesize noble metal nanoparticles which are potentially non-toxic and safer for biological application.In this review,the bio-synthesis of noble metal nanoparticle including gold nanoparticle(AuNPs),silver nanoparticle(AgNPs),platinum nanoparticle(PtNPs),and palladium nanoparticle(PdNPs)are first discussed.This is followed by a discussion of these biosynthesized noble metal in biological applications including antimicrobial,wound healing,anticancer drug,and bioimaging.Based on these,it can be concluded that the study on bio-synthesized noble metal nanoparticles will expand further involving bio-reduction by unexplored bio-materials.However,many questions remain on the feasibility of bio-synthesized noble metal nanoparticles to replace existing methods on various biological applications.Nevertheless,the current development of the biological application by bio-synthesized noble metal NPs is still intensively ongoing,and will eventually reach the goal of full commercialization. | Kok Bing Tan Daohua Sun Jiale Huang Tareque Odoom-Wubah Qingbiao Li | 2021 | Chinese Journal of Chemical Engineering2021，34，2： | 2 |
| 16 | Plant-Me- diated synthesis of Ag-Pd alloy nanoparticles and their applica- tion as catalyst toward selective hydrogenation显示文摘 | FENFEN LU DAOHUA SUN JIALE HUANG | 2014 | ACS Sustain- able Chemistry Engineering2014，2，： | 1 |
| 17 | Design and test of bionic wide-ridge soybean tilling-sowing machine显示文摘The insufficient accumulated temperature of the plow layer during spring tillage in Northeast China severely restricts soybean root growth and whole-plant development.High regional soil viscosity further complicates tilling-sowing.In order to seek a solution to these problems,field comparative tests were conducted to investigate the effects of shallow-loosening(SL)and reshaping ridge(RR)on soil temperature and soybean root growth.Compared with conventional tillage(CT),SL and RR significantly increased the soil temperatures within 0-25 cm(p<0.05)and 0-15 cm(p<0.05),respectively.In particular,higher soil temperature within 15-25 cm was established after SL than after RR(p<0.05).Additionally,SL promoted substantially more vigorous soybean development(seedling height)than RR(p<0.05),which in turn led to a significant outperformance over CT(p<0.05).Further,bionics,reverse engineering,and curve fitting were combined to design a hare claw toe bionic shallow-loosening shovel and a pangolin scale bionic ridging shovel with anti-drag functions.Field verification tests confirmed that these two bionic tillage devices outperformed the conventional tillage device in reducing tractive drag by 13%-19%.Based on the results of these tests,a 2BGD-6(110)bionic wide-ridge soybean tilling-sowing machine was designed,which was capable of shallow-loosening,reshaping ridge and sowing.The new machine significantly reduced the tractive drag,efficiently loosened the soil,increased soil temperature,and accelerated soybean root growth.This study can provide a theoretical and practical reference for soybean production in Northeast China. | Honglei Jia Mingzhuo Guo Jiale Zhao Dongyan Huang Jian Zhuang Jiangtao Qi | 2019 | International Journal of Agricultural and Biological Engineering2019，12，1： | 1 |
| 18 | Biosynthesis of silver and gold nanoparticles by novel sundried Cinnamomum camphora leaf显示文摘 | HUANG Jiale LI Qingbiao SUN Daohua | | 0，，03： | 1 |
| 19 | Columbianetin acetate inhibits the occurrence and development of pancreatic cancer cells by down-regulating the expression of Meiotic nuclear divisions 1显示文摘Columbianetin acetate(CE)is one of the effective components of Angelica pubescens.So far,the specific role and molecular mechanism of CE in pancreatic cancer are not clear.Thus,this study aimed to explore the specific mechanism of CE on pancreatic cancer.The target genes combined with CE were predicted through the PharmMapper database and the 3D molecular structure of CE.Then,the Cancer Genome Atlas(TCGA)and Cistrome data browser(DB)databases were used to screen Meiotic nuclear divisions 1(MND1)-related genes,transcription factors,and transcription factor data sets,and the intersection of the above data sets.The“limma”package in the R and gene expression profiling interactive analysis(GEPIA)databases were used to analyze the correlation and survival difference between the target genes and MND1 to predict the degree of association between CE and MND1.Western blotting and RT-PCR experiments revealed the regulatory relationship among CE,E2F1,and MND1 at the cellular level.The specific effects of CE on pancreatic cancer cells were explored through CCK8,wound healing,migration,and flow cycle experiments.E2F1,also the predictive transcription factor of MND1,was also the predictive target protein of CE.At the same time,E2F1 and MND1 were closely related in pancreatic tissue.In the cell function experiment,CE and interference with E2F1 expression could reduce the gene and protein expression of MND1,which was closely associated with cell proliferation,migration,and cycle development.Similarly,interfering with the expression of mnd1 can also inhibit the further development of tumor cells.CE may inhibit the development of pancreatic cancer cells by reducing the expression of MND1.This implies that CE may be a potential novel agent for the treatment of pancreatic cancer. | KANG SUN DONGQIN WANG ZHIQIANG ZHANG YINLONG HUANG XIAOFU LIAN JIALE HUA JING ZHANG CHAOQUN LIAN | 2023 | BIOCELL2023，47，2： | 1 |
| 20 | Enhanced active site extraction from perovskite LaCoO_(3) using encapsulated PdO for efficient CO_(2) methanation显示文摘The extraction of metallic nanoparticles from perovskite-type oxides(ABO_(3)) under mild reducing conditions is a novel way to prepare well-dispersed supported catalysts(B/AOd). Herein, we found that the encapsulated PdO in perovskite LaCoO_3(PdO@LaCoO_3) could facilitate the phase transformation of the perovskite structure at a low temperature owing to both strong H2 spillover of Pd and intimate interaction between the encapsulated PdO and LaCoO_(3). The pure LaCoO_(3) without PdO was relatively inert to CO_(2) hydrogenation(CO_(2) conversion <4%). In contrast, PdO@LaCoO_(3) exhibited excellent CO_(2) methanation performance with 62.3% CO_(2) conversion and >99% CH4 selectivity. The characterization results demonstrated that the catalytically active Co2 C was in-situ formed by carburization of the extracted Co0 during CO_(2) methanation for the PdO@LaCoO_(3) sample. Whereas, the LaCoO_(3) with surface supported PdO(PdO/LaCoO_(3)) showed a weak interaction and remained a perovskite structure with few Co_(2)C active centers after the catalytic reaction, which was similar to the parent LaCoO_(3). Accordingly, the PdO/LaCoO_(3) showed an inferior catalytic performance with 31.8% CO_(2) conversion and 87.4% CH_(4) selectivity. Therefore, the designed encapsulation structure of PdO within perovskite is critical to extract metallic NPs from perovskite-type oxides, which has the potential to prepare other integrated nanocatalysts based on perovskite-type oxides. | Kuncan Wang Wen Li Junjie Huang Jiale Huang Guowu Zhan Qingbiao Li | 2021 | Journal of Energy Chemistry2021，30，2： | 1 |
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