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| 1 | Zephyranthes-like Co2NiSe4 arrays grown on 3D porous carbon frame-work as electrodes for advanced supercapacitors and sodium-ion batteries显示文摘Developing suitable electrode materials for electrochemical energy storage devices by biomorph assisted design has become a fascinating topic due to the fantastic properties derived from bio-architectures.Herein,zephyranthes-like Co_(2)NiSe_(4)arrays grown on butterfly wings derived three-dimensional(3D)carbon framework(Z-Co_(2)NiSe_(4)/BWC)is fabricated via hydrothermal assembly and further conversion method.Benefiting from its unique structure and multi-components,the obtained Z-Co_(2)NiSe_(4)/BWC electrode for supercapacitor delivers an excellent specific capacitance of 2,280 F·g^(-1)at 1 A·g^(-1).Impressively,the constructed asymmetric supercapacitor using Co_(2)NiSe_(4)/BWC as positive electrode and activated butterfly wings carbon as negative electrode acquires a high energy density of 42.9 Wh·kg^(-1)at a power density of 800 W·kg^(-1)with robust stability of 94.6%capacitance retention at 10 A·g^(-1)after 5,000 cycles.Moreover,the Z-Co_(2)NiSe_(4)/BWC as anode for sodium-ion batteries exhibits a high specific capacity of 568 mAh·g^(-1)at 0.1 A·g^(-1)and high cycling stability(maintaining 80.1%of the second cycle after 100 cycles).The outstanding electrochemical performances are ascribed to that the synergistic effect of bimetallic selenides and N-doped carbon improves electrochemical activities and conductivity.One-dimensional(1D)nanoneedles grown on 3D porous framework increase the exposure of redox-active sites,endow adequate transmission channels of electrons/ions,and guarantee stability of the electrode during charge/discharge processes.This study will shed light on the avenue towards extending such nanohybrids to excellent energy storage applications. | Yanchun Xue Xingmei Guo Mengrong Wu Jiale Chen Mengting Duan Jing Shi Junhao Zhang Fu Cao Yuanjun Liu Qinghong Kong | 2021 | Nano Research2021，14，10： | 3 |
| 2 | A channel-confined strategy for synthesizing CoN-CoO_(x)/C as efficient oxygen reduction electrocatalyst for advanced zinc-air batteries显示文摘Designing hybrid transition metal compounds with optimized electronic structure and firmly dispersing them on a matrix to avoid aggregation and shedding is of great significance for achieving high electrocatalytic performances.Herein,an adsorption-complexation-calcination strategy based on channel confining effect is explored to obtain CoN-CoO_(x)hybrid nanoparticles uniformly dispersed in mesoporous carbon.The CoN-CoO_(x)/C composite exhibits excellent electrocatalytic behavior for oxygen reduction reaction(ORR).The half-wave potential and durability are comparable or superior to those of Pt/C.When applying as cathode catalyst for a primary zinc-air battery,the open-circuit voltage and peak power density reach up to 1.394 V and 109.8 mW·cm^(−2),respectively.A high gravimetric energy density of 950.3 Wh·kgZn^(−1) is delivered at 10 mA·cm^(−2) with good rate capability and stability.Density functional theory(DFT)calculation demonstrates the favorable ORR intermediate adsorbability and metallic characteristics of CoN grains with oxide hybridization to optimize the electronic structure.This work provides a facile adjustable approach for obtaining highly dispersed nanoparticles with controllable hybrid composition on a substrate,which is important for future design and optimization of high-performance electrocatalysts. | Xingmei Guo Wei Zhang Jing Shi Mengting Duan Shanjing Liu Junhao Zhang Yuanjun Liu Shenglin Xiong Qinghong Kong | 2022 | Nano Research2022，15，3： | 1 |
| 3 | Climate warming restructures seasonal dynamics of grassland soil microbial communities显示文摘Soil microbial community's responses to climate warming alter the global carbon cycle.In temperate ecosystems,soil microbial communities function along seasonal cycles.However,little is known about how the responses of soil microbial communities to warming vary when the season changes.In this study,we investigated the seasonal dynamics of soil bacterial community under experimental warming in a temperate tall‐grass prairie ecosystem.Our results showed that warming significantly(p=0.001)shifted community structure,such that the differences of microbial communities between warming and control plots increased nonlinearly(R^(2)=0.578,p=0.021)from spring to winter.Also,warming significantly(p<0.050)increased microbial network complexity and robustness,especially during the colder seasons,despite large variations in network size and complexity in different seasons.In addition,the relative importance of stochastic processes in shaping the microbial community decreased by warming in fall and winter but not in spring and summer.Our study indicates that climate warming restructures the seasonal dynamics of soil microbial community in a temperate ecosystem.Such seasonality of microbial responses to warming may enlarge over time and could have significant impacts on the terrestrial carbon cycle. | Xue Guo Mengting Yuan Jiesi Lei Zhou Shi Xishu Zhou Jiabao Li Ye Deng Yunfeng Yang Liyou Wu Yiqi Luo James MTiedje Jizhong Zhou | 2022 | mLife2022，1，3： | 1 |
| 4 | Electroacupuncture Alleviates HIF1-α-mediated Early Mitophagy in Spinal Cord Injury显示文摘Background:The inhibitory microenvironment around spinal cord injury(SCI)severely restricted functional repair after injury.Mitophagy was one of the important measures to maintain cellular homeostasis and ensure the harmonious nerve cell microenvironment.Hypoxia-inducible factor1α(HIF1-α)can mediate mitochondrial autophagy in neurodegenerative diseases,but the mechanisms are complex and diverse,which need to be further elucidated.Electroacupuncture plays a significant role in improving the neural microenvironment after spinal cord injury,promote long-term neurological function recovery in SCI patients,but whether electroacupuncture can participate in HIF1-α mediated mitophagy remains unknown.Objective:Investigated the effects of HIF1-α on mitochondrial autophagy in rats with spinal cord contusion and the potential mechanism of electroacupuncture.Methods:Following the successful construction of an SCI model of Sprague-Dawley rat utilizing a modified Allen method,electroacupuncture intervention was performed at T9 and T11 Jiaji acupoint(EX-B2),with further molecular biology and morphology examined by perfusion.To observe the effect of HIF1-α on local damage repair,the stereotypic injection of Hif1a knockdown virus was performed,and the changes of mitophagy in damaged local area was detected employing Western blotting,real-time fluorescence quantitative PCR,immunofluorescence,transmission electron microscopy and Nissl staining.Results:HIF1-α as well as its mitophagy receptor BNIP3 and NIX are upregulated after spinal cord injury.Elec-troacupuncture treatment or local inhibition of HIF1-α expression can reverse the early autophagy state after spinal cord injury,reduce cell apoptosis and injury area,promote neuronal survival.Conclusion:Electroacupuncture may serve as a promising strategy for spinal cord injury treatment,by alleviating HIF1-α mediated early mitochondrial autophagy. | Rong Hu Xingying Wu Kelin He Mengting Shi Haipeng Xu Yi Chen Bowen Chen Lei Wu Ruijie Ma Kang Liang | 2024 | Clinical Complementary Medicine and Pharmacology2024，4，1： | 0 |
| 5 | High-performance Removal of Tetracycline Enabled by Fe^(0)Nanoparticles Supported on Carbon@ZIF-8显示文摘Significant concerns have been raised over the removal of antibiotics,such as tetracyclines(TC)in aquatic environments.Herein,we synthesized a new type of heterogeneous catalyst by supporting Fe^(0) nanopartciles(FeNPs)onto carbon coated ZIF-8(C@ZIF-8).The carbon layer formed by glucose was beneficial to maintain the morphology and porous structure of ZIF-8,which can also appropriately improve the hydrophobicity of ZIF-8 for enriching the TC.The as-prepared FeNPs-C@ZIF-8 catalyst featured an extreme large specific surface area(1122.16 m2/g),and the supported FeNPs with an average diameter of 6.13 nm exhibited a high dispersity on the supporting matrix of C@ZIF-8.For the removal of tetracycline,the large specific surface area of FeNPs-C@ZIF-8 allowed for an easy access of tetracycline to the FeNPs,while the highly dispersed FeNPs served as actived sites for the efficient degradation of tetracycline.A synergistic effect between adsorption and catalytic degradation of FeNPs(5%,mass fraction)-C@ZIF-8 was proven to be responsible for the high-performance removal of tetracycline with the removal efficiency high up to 93.02%at pH 5,25℃.The FeNPs-C@ZIF-8 was capable of recycling after activation with supplementary Fe^(0),which still maintained a high removal efficiency of 75.52%in the 5th cycle within 20 min. | XIAO Meng QI Wenqian JIA Shuanghui PANG Mengting SHI Fengcheng MAO Hui | 2022 | Chemical Research in Chinese Universities2022，38，6： | 0 |
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