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| 1 | Combined alkaline and ultrasonic pretreatment of sludge before aerobic digestion显示文摘Alkaline and ultrasonic sludge disintegration can be used as the pretreatment of waste activated sludge(WAS) to promote the subsequent anaerobic or aerobic digestion.In this study,different combinations of these two methods were investigated.The evaluation was based on the quantity of soluble chemical oxygen demand(SCOD) in the pretreated sludge as well as the degradation of organic matter in the subsequent aerobic digestion.For WAS samples with combined pretreatment,the released COD levels were higher than those with ultrasonic or alkaline pretreatment alone.When combined with the ultrasonic treatment,NaOH treatment was more effcient than Ca(OH)2 for WAS solubilization.The COD levels released in various sequential options of combined NaOH and ultrasonic treatments were in the the following descending order:simultaneous treatment > NaOH treatment followed by ultrasonic treatment > ultrasonic treatment followed by NaOH treatment.For simultaneous treatment,low NaOH dosage(100 g/kg dry solid),short duration(30 min) of NaOH treatment,and low ultrasonic specific energy(7500 kJ/kg dry solid) were suitable for sludge disintegration.Using combined NaOH and ultrasonic pretreatment with optimal parameters,the degradation effciency of organic matter was increased from 38.0% to 50.7%,which is much higher than that with ultrasonic(42.5%) or with NaOH pretreatment(43.5%) in the subsequent aerobic digestion at the same retention time. | MAHAR Rasool Bux | 2009 | Journal of Environmental Sciences2009，21，3： | 40 |
| 2 | Selectively transform lignin into value-added chemicals显示文摘Lignin is one of the most important biomass resources. With the increasing consumption of petroleum resource, lignin transformation is of strategic significance and has attracted widely interest. As lignin is a random construction of aromatic monomers, the degradation products are usually very complex, which limits the scaling application of lignin as feedstock for valuable chemicals. Thus, it is desperately desired to develop highly selective approach to lignin conversion. This review first gives a brief introduction to the structure of lignin, and then summarized the methods for selective transformation of lignin into phenols, aldehydes, carboxylic acids, alkanes and arenes. Finally, the challenges and opportunities of lignin selective transformation are discussed. | Qingqing Mei Xiaojun Shen Huizhen Liu Buxing Han | 2019 | Chinese Chemical Letters2019，30，1： | 7 |
| 3 | Multi-shelled CuO microboxes for carbon dioxide reduction to ethylene显示文摘The electroreduction of CO2 to valuable chemicals and fuels offers an effective mean for energy storage.Although CO2 has been efficiently converted into C1 products(e.g.,carbon monoxide,formic acid,methane and methanol),its convention into high value-added multicarbon hydrocarbons with high selectivity and activity still remains challenging.Here we demonstrate the formation of multi-shelled CuO microboxes for the efficient and selective electrocatalytic CO2 reduction to C2H4.Such a structure favors the accessibility of catalytically active sites,improves adsorption of reaction intermediate(CO),inhibits the diffusion of produced OH−and promotes C-C coupling reaction.Owing to these unique advantages,the multi-shelled CuO microboxes can effectively convert CO2 into C2H4 with a maximum faradaic efficiency of 51.3%in 0.1 M K2SO4.This work provides an effective way to improve CO2 reduction efficiency via constructing micro-and nanostructures of electrocatalysts. | Dongxing Tan Jianling Zhang Lei Yao Xiuniang Tan Xiuyan Cheng Qiang Wan Buxing Han Lirong Zheng Jing Zhang | 2020 | Nano Research2020，13，3： | 6 |
| 4 | Electroreduction of CO_(2) in Ionic Liquid-Based Electrolytes显示文摘Electroreduction of carbon dioxide(CO_(2))to value-added chemicals and fuels is a promising approach for sustainable energy conversion and storage.Many electrocatalysts have been designed for this purpose and studied extensively.The role of the electrolyte is particularly interesting and is pivotal for designing electrochemical devices by taking advantage of the synergy between electrolyte and catalyst.Recently,ionic liquids as electrolytes have received much attention due to their high CO2 adsorption capacity,high selectivity,and low energy consumption. | Dexin Yang Qinggong Zhu Buxing Han | 2020 | The Innovation2020，1，1： | 6 |
| 5 | Catalytic conversion of lignocellulosic biomass into chemicals and fuels显示文摘In the search of alternative resources to make commodity chemicals and transportation fuels for a low carbon future,lignocellulosic biomass with over 180-billion-ton annual production rate has been identified as a promising feedstock.This review focuses on the state-of-the-art catalytic transformation of lignocellulosic biomass into value-added chemicals and fuels.Following a brief introduction on the structure,major resources and pretreatment methods of lignocellulosic biomass,the catalytic conversion of three main components,i.e.,cellulose,hemicellulose and lignin,into various compounds are comprehensively discussed.Either in separate steps or in one-pot,cellulose and hemicellulose are hydrolyzed into sugars and upgraded into oxygen-containing chemicals such as 5-HMF,furfural,polyols,and organic acids,or even nitrogen-containing chemicals such as amino acids.On the other hand,lignin is first depolymerized into phenols,catechols,guaiacols,aldehydes and ketones,and then further transformed into hydrocarbon fuels,bioplastic precursors and bioactive compounds.The review then introduces the transformations of whole biomass via catalytic gasification,catalytic pyrolysis,as well as emerging strategies.Finally,opportunities,challenges and prospective of woody biomass valorization are highlighted. | Weiping Deng Yunchao Feng Jie Fu Haiwei Guo Yong Guo Buxing Han Zhicheng Jiang Lingzhao Kong Changzhi Li Haichao Liu Phuc T.T.Nguyen Puning Ren Feng Wang Shuai Wang Yanqin Wang Ye Wang Sie Shing Wong Kai Yan Ning Yan Xiaofei Yang Yuanbao Zhang Zhanrong Zhang Xianhai Zeng Hui Zhou | 2023 | Green Energy & Environment2023，8，1： | 6 |
| 6 | Electrochemical reduction of CO_2 to CO using graphene oxide/carbon nanotube electrode in ionic liquid/acetonitrile system显示文摘Electrochemical reduction of CO_2 to CO is an interesting topic. In this work, we prepared metal-free electrodes by depositing graphene oxide(GO), multi-walled carbon nanotube(MWCNT), and GO/MWCNT composites on carbon paper(CP) using electrophoretic deposition(EPD) method. The electrodes were characterized by different methods, such as X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The electrochemical reduction of CO_2 to CO was conducted on the electrodes in 1-butyl-3-methylimidazolium tetrafluoroborate([Bmim]BF4)/acetonitrile(Me CN) electrolyte, and the composition of the electrolyte influenced the reaction significantly. It was demonstrated that GO/MWCNT-CP electrode was very effective for the reaction in IL(90 wt%)/Me CN binary mixture, the Faradaic efficiency of CO and current density were even higher than those on Au and Ag electrodes in the same electrolyte. | Qinggong Zhu Jun Ma Xinchen Kang Xiaofu Sun Jiayin Hu Guanying Yang Buxing Han | 2016 | Science China Chemistry2016，59，5： | 5 |
| 7 | Ionic liquids produce heteroatom-doped Pt/TiO2 nanocrystals for efficient photocatalytic hydrogen production显示文摘It is of great importance to develop facile strategies to synthesize catalysts with desirable compositions and structures for high-performance photocatalytic hydrogen generation. In this work, we put forward an ionic liquid assisted one-pot route for the synthesis of heteroatom-doped Pt/TiO2 composite material. This route is simple, environmentally benign and adjustable owing to the designable properties of ionic liquids. The as-synthesized Pt/TiO2 nanocrystals exhibit high activity and stability for the photocatalytic hydrogen generation under simulated solar irradiation. This method can be easily applied to the synthesis of various kinds of metal/TiO2 composites doped with desirable heteroatoms (e.g., F, Cl, Br, etc). | Xiuniang Tan Jianling Zhang Dongxing Tan Jinbiao Shi Xiuyan Cheng Fanyu Zhang Lifei Liu Bingxing Zhang Zhuizhui Su Buxing Han | 2019 | Nano Research2019，12，8： | 5 |
| 8 | Supercritical CO2 produces the visible-light-responsive TiO2/COF heterojunction with enhanced electron-hole separation for highperformance hydrogen evolution显示文摘To construct the heterojunctions of TiO2 with other compounds is of great importance for overcoming its inherent shortages and improving the visible-light photocatalytic performance.Here we propose the construction of TiO2/covalent organic framework(COF)heterojunction with tight connection by a supercritical CO2(SC CO2)method,which helps bridging the transformation paths for photo-induced charge between T i02 and COF.The produced T i02/COF heterojunction performs a H2 evolution of 3,962 nmol·g^-1·h^-1 under visible-light irradiation,which is-25 times higher than that of pure TiO2 and 4.5 folds higher than that of TiO2/COF synthesized by the conventional solvothermal method.This study opens up new possibilities for constructing heterojunctions for solar energy utilization. | Lifei Liu Jianling Zhang Xiuniang Tan Bingxing Zhang Jinbiao Shi Xiuyan Cheng Dongxing Tan Buxing Han Lirong Zheng Fanyu Zhang | 2020 | Nano Research2020，13，4： | 4 |
| 9 | Recent advances in the coupling of CO2 and epoxides into cyclic carbonates under halogen-free condition显示文摘The chemical transformation of CO2 and epoxides into cyclic carbonates has been receiving much attention and is one of the successful examples for CO2 utilization as carbon resource.Many catalysts containing halide anions have been explored and exhibit excellent catalytic activity.However,halogen salt is generally toxic and corrosive to reactors.From a green chemistry perspective,it is more attractive to develop a halogen-free catalyst with excellent performance.Herein,a review of recent research progress of halogen-free catalysts in the cycloaddition of CO2 and epoxide is presented.According to previous experimental and theoretical works,two possible strategies for achieving the halogen-free process were summarized.The relationship between catalytic activity and catalyst structure,the mechanism of CO2 activation should be both studied deeply combined with experimental results and DFT calculation,which can guide the design of new catalysts and realize halogen-free process under mild reaction conditions. | Feng Zhang Yanyan Wang Xiaochun Zhang Xiangping Zhang Huizhen Liu Buxing Han | 2020 | Green Chemical Engineering2020，1，2： | 4 |
| 10 | Single atom and defect engineering of CuO for efficient electrochemical reduction of CO_(2) to C_(2)H_(4)显示文摘Electrochemical CO_(2) transformation to high‐value ethylene(C_(2)H_(4))at high currents and efficiencies is desired and yet remains a grand challenge.We show for the first time that coupling single Sb atoms and oxygen vacancies of CuO enable synergistic electrocatalytic reduction of CO_(2) to C_(2)H_(4) at low overpotentials.Highly dispersed Sb atoms occupying metal substitutional sites of CuO are synthesized under mild conditions.The overall CO_(2) reduction faradaic efficiency(FE)reaches 89.3±1.1%with an FE toward C_(2)H_(4) exceeding 58.4%at a high‐current density of 500 mA/cm^(2).Addition of the p‐block metal is found to induce transformation of CuO from flakes to nanoribbons rich in nanoholes and oxygen vacancies,greatly enhancing CO_(2) adsorption and activation while suppressing hydrogen evolution.Further density functional theory calculations with in situ X‐ray diffraction reveal that combining Sb sites and oxygen vacancies prominently lessen the dimerization energy of adsorbed CO intermediate,thus boosting the conversion of CO_(2) to produce C_(2)H_(4).This study provides a new perspective for promoting selective C-C coupling for electrochemical CO_(2) reduction. | Senlin Chu Changwoo Kang Woonghyeon Park Yu Han Song Hong Leiduan Hao Hao Zhang Tsz Woon Benedict Lo Alex W.Robertson Yousung Jung Buxing Han Zhenyu Sun | 2022 | SmartMat2022，3，1： | 3 |
| 11 | Nitrogen-carbon layer coated nickel nanoparticles for efficient electrocatalytic reduction of carbon dioxide显示文摘The application of nickel in electrocatalytic reduction of CO2 has been largely restricted by side reaction (hydrogen evolution reaction) and catalyst poisoning.Here we report a new strategy to improve the electrocatalytic performance of nickel for CO2 reduction by employing a nitrogen-carbon layer for nickel nanoparticles.Such a nickel electrocatalyst exhibits high Faradaic efficiency 97.5% at relatively low potential of-0.61 V for the conversion of CO2 to CO.Density functional theory calculation reveals that it is thermodynamically accomplishable for the reduction product CO to be removed from the catalyst surface,thus avoiding catalyst poisoning.Also,the catalyst renders hydrogen evolution reaction to be suppressed and hence reasonably improves catalytic performance. | Dongxing Tan Chaonan Cui Jinbiao Shi Zhixun Luo Bingxing Zhang Xiuniang Tan Buxing Han Lirong Zheng Jing Zhang Jianling Zhang | 2019 | Nano Research2019，12，5： | 3 |
| 12 | Ethylenediamine promoted the hydrogenative coupling of nitroarenes over Ni/C catalyst显示文摘Azobenzene and its derivatives are key raw materials and it is an environmentally friendly method for the preparation of azobenzene by hydrogenative coupling of nitrobenzene. The development of nickel based catalyst for organic transformations is of importance because of its relatively low cost and toxicity. In this work, we found that ethylenediamine can enrich the electron state of Ni and make the azobenzene easily desorb from the surface of the catalyst, which inhibits the hydrogenation of azobenzene to aniline. The selectivity of azobenzene is greatly improved. When the ratio of Ni and ethylenediamine is 1:10, the yield of the azobenzene can reach 95.5%. | Youdi Yang Shaopeng Li Chao Xie Hangyu Liu Yanyan Wang Qingqing Mei Huizhen Liu Buxing Han | 2019 | Chinese Chemical Letters2019，30，1： | 3 |
| 13 | Basic ionic liquids promoted chemical transformation of CO_2 to organic carbonates显示文摘Ionic liquids(ILs), especially basic ILs with unique physicochemical properties, have wide application in catalysis. Using basic ILs as catalysts for the conversion of cheap, abundant, nontoxic, and renewable CO_2 into value-added organic carbonates is highly significant in view of environmental and economic issues. This review aims at giving a detailed overview on the recent advances on basic ILs promoted chemical transformation of CO_2 to cyclic and linear carbonates. The structures of various basic ILs, as well as the basic ILs promoted reactions for the transformation of CO_2 to organic carbonates are discussed in detail,including the reaction conditions, the yields of target products, the catalytic activities of basic ILs and the reaction mechanism. | Jiayin Hu Huizhen Liu Buxing Han | 2018 | Science China Chemistry2018，61，12： | 3 |
| 14 | The physicochemical properties of some imidazolium-based ionic liquids and their binary mixtures显示文摘The density, viscosity and conductivity of ionic liquids (ILs), 1-octyl-3-methylimidazolium tetrafluoroborate ([omim][BF4]), 1-octyl-3-methylimidazolium chloride ([omim][Cl]), 1-hexyl-3-methylimidazolium tetrafluoroborate ([hmim] BF4]), 1-hexyl- 3-methylimidazolium chloride ([hmim][Cl]), 1-hexyl-3-methylimidazolium hexafluorophosphate ([hmim][PF6]), and the [omim][BF4] + [omim][Cl], [hmim][BF4] + [hmim][Cl], and [hmim][PF6] + [hmim][Cl] binary mixtures were studied at dif- ferent temperatures. It was demonstrated that the densities of both the neat ILs and their mixtures varied linearly with temper- ature. The density sensitivity of a binary mixture is between those of the two components. The excess molar volumes (VE) of [hmim][BF4] + [hmim][Cl] and [hmim][PF6] + [hmim][Cl] mixtures are positive in the whole composition range. For [omim][BF4] + [omim][Cl], the VE is also positive in the [omim][Cl]-rich region, but is negative in the [omim][BF4]-rich re- gion. The viscosity or conductivity of a mixture is in the intermediate of those of the two neat ILs. For all the neat ILs and the binary mixtures studied, the order of conductivity is opposite to that of the viscosity. The Vogel-Tammann-Fulcher (VTF) equations can be used to fit the viscosity and conductivity of all the neat ILs and the binary mixtures. The neat ILs and their mixtures obey the Fractional Walden Rule very well, and the values of the Walden slopes are all smaller than unit, indicating obvious ion associations in the neat ILs and the binary mixtures. | NING Hui HOU MinQiang MEI QingQing LIU YuanHui YANG DeZhong HAN BuXing | 2012 | Science China Chemistry2012，55，8： | 3 |
| 15 | Enhanced CO_(2)electroreduction to ethylene via strong metal-support interaction显示文摘The CuO/CeO_(2) composites with strong metal-support interaction were synthesised,which can efficiently electroreduct CO_(2)to C(2)H_(4).The Faradaic efficiency(FE)of C_(2)H_(4) could reach 50.5%with a current density of 18 mA cm^(-2).The strong metal-support interaction could not only enhance the adsorption and activation of CO_(2),but also can stablize the CuO. | Mengen Chu Chunjun Chen Yahui Wu Xupeng Yan Shuaiqiang Jia Ruting Feng Haihong Wu Mingyuan He Buxing Han | 2022 | Green Energy & Environment2022，7，4： | 3 |
| 16 | Special Topic on Ionic Liquids: Energy, Materials & Environment显示文摘Ionic liquids(ILs)are organic salts with low melting points,which have many unusual properties like negligible vapor pressure,good thermal stability,non-flammability,wide liquid range and electrochemical window,and excellent solvation power for both organic and inorganic substances.The unique characteristics of ILs endow them with great potential for applications in different fields including chemical reactions,extraction and separation,material science, | Suojiang Zhang Buxing Han Jianji Wang | 2016 | Science China Chemistry2016，59，5： | 2 |
| 17 | Green chemistry: a tool for the sustainable development of the chemical industry显示文摘Most manufactured products involve one or more chemical processes.We cannot imagine what our life will be like without the products produced by the chemical industry.However,on average,only a small proportion of the resources we take from the Earth is converted into the desired products in current chemical processes,and large amounts of wastes and hazardous materials are generated.How to supply humanity with enough food, | Jinliang Song Buxing Han | 2015 | National Science Review2015，2，3： | 2 |
| 18 | Synthesis of cyclic carbonates and dimethyl carbonate using CO_(2) as a building block catalyzed by MOF-5/KI and MOF-5/KI/K_(2)CO_(3)显示文摘The synthesis of cyclic carbonates or dimethyl carbonate(DMC)using CO_(2) as a building block is a very interesting topic.In this work,we found that the metalorganic framework-5(MOF-5)/KI was an active and a selective catalytic system for the synthesis of cyclic carbonates from CO_(2) and epoxides,and MOF-5/KI/K_(2)CO_(3) was efficient for the preparation of DMC from CO_(2),propylene,and methanol by a sequential route.The impacts of temperature,pressure,and reaction time length on the reactions were investigated,and the mechanism of the reactions is proposed on the basis of the experimental results. | Jinliang SONG Binbin ZHANG Tao JIANG Guanying YANG Buxing HAN | 2011 | Frontiers of Chemistry in China2011，6，1： | 2 |
| 19 | Ionic liquid-based electrolytes for CO_(2) electroreduction and CO_(2) electroorganic transformation显示文摘CO_(2) is an abundant and renewable C1 feedstock.Electrochemical transformation of CO_(2) can integrate CO_(2) fixation with renewable electricity storage,providing an avenue to close the anthropogenic carbon cycle.As a new type of green and chemically tailor able solvent,ionic liquids(ILs) have been proposed as highly promising alternatives for conventional electrolytes in electrochemical CO_(2) conversion.This review summarizes major advances in the electrochemical transformation of CO_(2) into value-added carbonic fuels and chemicals in IL-based media in the past several years.Both the direct CO_(2) electroreduction(CO_(2) ER)and CO_(2)-involved electro organic transformation(CO_(2) EOT) are discussed,focusing on the effect of electrocatalysts,IL components,reactor configurations and operating conditions on catalytic activity,selectivity and reusability.The reasons for the enhanced CO_(2) conversion performance by ILs are also discusse d,providing guidance for the rational design of novel IL-based electro chemical processes for CO_(2) conversion.Finally,the critical challenges remaining in this research area and promising directions for future research are proposed. | Xingxing Tan Xiaofu Sun Buxing Han | 2022 | National Science Review2022，9，4： | 2 |
| 20 | Selective electroreduction of carbon dioxide to formic acid on electrodeposited SnO_2@N-doped porous carbon catalysts显示文摘Electrocatalytic reduction of CO_2 is a promising route for energy storage and utilization. Herein we synthesized SnO_2 nanosheets and supported them on N-doped porous carbon (N-PC) by electrodeposition for the first time. The SnO_2 and N-PC in the SnO_2@N-PC composites had exellent synergistic effect for electrocatalytic reduction of CO_2 to HCOOH. The Faradaic efficiency of HCOOH could be as high as 94.1% with a current density of 28.4 mA cm-2 in ionic liquid-MeCN system. The reaction mechanism was proposed on the basis of some control experiments. This work opens a new way to prepare composite electrode for electrochemical reduction of CO_2. | Lu Lu Xiaofu Sun Jun Ma Qinggong Zhu Congyi Wu Dexin Yang Buxing Han | 2018 | Science China Chemistry2018，61，2： | 2 |
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