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Phase transition controlled construction of Z-scheme heterojunction Ce3+/Ce4+ doped metastable β-Bi2O3/AgI for efficient carrier separation in visible-light-driven photocatalysis

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Journal of Rare Earths 2025年第5期43卷 940-952页

作者： Jin, Zhouzheng Li, Lei Cao, Chunshuai Dong, Huiling Li, Ao Peng, Xueping Ma, Aijing Pan, Shiguang Liu, Dan Gui, Jianzhou State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Green Chemical Technology and Process Engineering School of Chemical Engineering and Technology Tiangong University Tianjin300387 China Tianjin Cement Industry Design & Research Institute Co. Ltd. Tianjin300400 China Ningxia Coal Industry Co. Ltd. CHN ENERGY Yinchuan750411 China School of Chemistry Tiangong University Tianjin300387 China

Ce-β-Bi2O3/AgI was prepared using solvothermal calcination and in-situ deposition methods. The introduction of Ce can inhibit the conversion of Bi2O3 from β to α phase at high temperatures, promoting the formation of oxygen vacancies (OVs) in the photocatalyst. OVs can adsorb more dissolved oxygen to promote the formation rate of ·O2–. Moreover, the interaction between Ce–Bi2O3 and AgI results in the formation of Z-scheme heterojunctions, which can broaden the light absorption region, facilitate photogenerated carrier separation and transfer and enhance the ability to produce more active oxygen species (ROS). The morphology, crystal, element distribution and photo-electric chemical properties of the Ce–Bi2O3/AgI were analyzed, and the result shows that the optimal ratio of Ce–Bi2O3/AgI photocatalyst achieves a removal rate of 88.63% (180 min) of tetracycline (TC) (20 mg/L) and 100% (120 min) of methyl orange (MO) (20 mg/L). This work clarified the photocatalytic degradation mechanism, providing a promising avenue for developing photocatalytic composites by rare earth metal doping in environmental remediation applications. © 2024 Chinese Society of Rare Earths

关键词： Semiconductor doping

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A Highly Efficient Ni/Al_(2)O_(3)-LaO_(x) Catalyst for the Reductive Amination of Furfural to Furfurylamine:the Promoting Effect of La

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Chemical Research in Chinese Universities 2024年第1期40卷 36-46页

作者： YANG Yinze ZHANG Liyan ZHOU Leilei CHENG Haiyang ZHAO Fengyu State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022P.R.China School of Applied Chemistry and Engineering University of Science Technology of ChinaHefei 230026P.R.China Jilin Province Key Laboratory of Green Chemistry and Process Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022P.R.China

The reductive amination of furfural to furfurylamine is an important and still challenging topic in the field of biomass conversion. In this work, we prepared a series of Ni/Al_(2)O_(3)-LaO_(x) catalysts by co-precipitation method, the role of La played in promoting the catalytic performances of reductive amination furfural was discussed based on the changes in the electronic state of Ni species, acidity, and Ni particle size. The catalytic activity and the selectivity of furfurylamine are highly dependent on the surface properties and the structure of the catalyst. The addition of La promoted the amount of strong acidic sites and the H2dissociation and spillover on the surface, thus inducing the improvement of the catalytic activity and furfurylamine selectivity. The Ni/Al_(2)O_(3)-0.5LaO_(x)catalyst with suitable acid sites gave a high yield of furfurylamine (94.9%) under mild reaction conditions. Moreover, the catalyst could be recycled five times without significant loss in activity. The Ni/Al_(2)O_(3)-LaO_(x) catalyst is of great promise in the production of amines via reductive amination reaction.

关键词： Reductive amination Furfural Nickel catalyst Furfurylamine Lanthanum

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Influences of CeO_(2)morphology on enhanced performance of electro-Fenton for wastewater treatment

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Journal of Rare Earths 2022年第12期40卷 1870-1877,I0002页

作者： Jingjing Hu Bei Wu Lei Chen Chengcheng Song Huifang Yang Fei Long Jie Sun Ru'an Chi Hubei Novel Reactor&Green Chemical Technology Key Laboratory Key Laboratory for Green Chemical Process of Ministry of EducationXingfa School of Mining EngineeringWuhan Institute of TechnologyWuhan 430073China Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission&Ministry of Education Hubei ProvinceCollege of Resource and Environmental ScienceSouth-Central University for NationalitiesWuhan 430074China

As a kind of rare-earth oxide,CeO_(2)has been considered as a great potential material for its abundant oxygen vacancies and catalysis activity in wastewater *** this study,three ceria samples with different morphological structure were prepared,and their effect on contaminates degradation in electro-Fenton(E-Fenton)system was *** is found that the morphology of CeO_(2)has great influence on promoting the performance of E-Fenton *** rod-like CeO_(2)(R-CeO_(2))induced EFenton system shows higher azo dye X3 B removal and mineralization rates than cubs(C-CeO_(2))and octahedrons(O-CeO_(2)),and the degradation kinetic rate constants are 0.28,0.169 and 0.181 min^(-1)respectively,already surpass that of the blank one(0.120 min^(-1)).The H_(2)O_(2)generation capacity of R-CeO_(2)induced E-Fenton system is also superior to the others,and the corresponding Faraday current efficiency even increases to 166.2%at 2.5 *** by scanning-transmission electron microscopy(STEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),electron spin resonance(ESR),Raman spectroscopy were conducted to disclose the mystery behind this *** results indicate that the difference of surface oxygen vacancy density in different shaped CeO_(2)acts as a magic driving force for the accelerated oxygen reduction,and then leads to the enhanced degradation efficiency of E-Fenton *** work provides a new insight into the development and application of rare-earth elements based catalyst in E-Fenton technology.

关键词： CeO_(2) Electro-Fenton Current efficiency Exposed facets H_(2)O_(2) Morphology

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Enhanced corrosion resistance,antibacterial properties and osteogenesis by Cu ion optimized MgAl-layered double hydroxide on Mg alloy

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Journal of Magnesium and Alloys 2024年第10期12卷 4174-4190页

作者： Qingge Wang Chuting Liao Bo Liu Shaohui Jing Zhenhu Guo Luxin Liang Jingbo Liu Ning Li Runhua Zhou Ian Baker Hong Wu State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Department of General Surgery The Second Xiangya HospitalCentral South UniversityChangsha 410011China National Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Department of Orthopedics The Second Xiangya HospitalCentral South UniversityChangsha 410011China Department of Oral and Maxillofacial Surgery Center of StomatologyXiangya HospitalCentral South UniversityChangsha 410008China School of Mechanical and Aerospace Engineering Nanyang Technological University639798Singapore Thayer School of Engineering Dartmouth CollegeHanoverNH 03755-8000USA

Magnesium(Mg)and its alloys have similar densities and elastic moduli to natural bone,making them an excellent choice for orthopedic ***,Mg alloys are prone to electrochemical corrosion,which often leads to implant failure and hinders the further development of Mg alloys due to bacterial infection around the *** work aims to enhance the corrosion resistance of Mg alloys,and provide theoretical guidance for solving the problem that Mg-based orthopedic implants are susceptible to bacterial infection and,thus,implant *** order to solve the corrosion problem,the Mg alloy AZ91D was used as the substrate,and a compact and uniform MgAlCu-layered double hydroxide(Mg(Cu)-LDH)was prepared on its surface using a hydrothermal *** Mg(Cu)-LDH provides a barrier between the AZ91D and corrosive liquid,which effectively protects the Mg substrate from being *** Mg(Cu)-LDH shows great cell viability for MC3T3-E1 *** Cu^(2+)and Mg^(2+) in the coating also endow the Mg(Cu)-LDH/AZ91D with antibacterial properties,showing strong antibacterial effects on both *** and *** with antibacterial rates over 85%.Finally,in vivo results indicated that a LDH-coated implant had no systemic effects on the hearts,livers,spleens,lungs or *** was shown that 4 weeks after surgery the ratio of bone volume to tissue volume(BV/TV)of the LDH implant was 24%,which was 1.7 times that observed for AZ91D.

关键词： Mg alloy Surface modification Layered double hydroxide Corrosion resistance Antibacterial mechanisms Osteogenesis

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Selective lithium extraction from spent LiNi0.5Co0.2Mn0.3O2/graphite mixed black powders and regeneration of single-crystal cathodes

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Journal of Industrial and engineering Chemistry 2025年 149卷 720-729页

作者： Wei, Daixiang Wang, Wei Jiang, Longjin Chang, Zhidong Anwar, Hira Sun, Qinglong Tian, Hongkai Dong, Bin Zhou, Hualei Gao, Dekun School of Chemistry and Biological Engineering University of Science and Technology Beijing Beijing100083 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Anhui Chaoyue Environmental Protection Technology Co. Ltd Anhui Province Chuzhou239060 China Anhui Huihong Technology Co. Ltd Anhui Province Chuzhou239060 China

Selective recovery of specific elements from spent lithium-ion batteries is essential for the sustainable development of finite resources. An approach to selectively extract lithium from the spent mixed black powder and regenerate single-crystal cathodes was proposed in this work. Firstly, (NH4)2SO4 was utilized to convert some of the spent LiNi0.5Co0.2Mn0.3O2(S-NCM523) in the mixed black powders to sulfates with different thermodynamic stability. With the further increase in temperature, the transition metal sulfates continued reaction with residual NCM523 (r-NCM523) generated water-soluble phase Li2SO4 and water-insoluble slag phase Ni-Co-Mn-O/graphite. It was worth mentioning that the graphite in the black powder reduced the Gibbs free energy of the sulfate roasting reaction under air atmosphere, which helped to reduce energy consumption. Then, 95.73 % of the Li was recovered by water-leaching, which was further converted into battery-grade Li2CO3. The precursor Ni0.5Co0.2Mn0.3(OH)2 was obtained by co-precipitation after acid leaching and filtration of the slag phase to remove residual graphite. Finally, the regeneration single-crystal NCM523 (RSC-NCM523) exhibited stable cycling performance compared with commercial single-crystal NCM523 (CSC-NCM523), which had an initial discharge specific capacity of 151.2 mAh g−1 at 1C and the capacity retention rate of 92.20 % after 100 cycles. © 2025

关键词： Gibbs free energy

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仿生酶固定化纳米反应器通过级联催化反应实现胆固醇的精确检测

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Science China Materials 2024年第8期67卷 2540-2549页

作者：熊京商灵灵赵德偲王丹 State Key Laboratory of Biochemical Engineering Key Laboratory of Biopharmaceutical Preparation and DeliveryInstitute of Process EngineeringChinese Academy of Sciences1 North 2nd StreetZhongguancunBeijing 100190China University of Chinese Academy of Sciences 19A Yuquan RoadBeijing 100049China

基于酶的生化检测方法具有准确性高、检测速度快等优势,但生物酶的不稳定性限制了这一方法的应用.因此,开发一种活性高、稳定性强、反应效率高的酶包封体系是提高胆固醇生化检测的关键.为此,本研究发展了由二棕榈酸磷脂酰胆碱包覆中空... 详细信息

基于酶的生化检测方法具有准确性高、检测速度快等优势,但生物酶的不稳定性限制了这一方法的应用.因此,开发一种活性高、稳定性强、反应效率高的酶包封体系是提高胆固醇生化检测的关键.为此,本研究发展了由二棕榈酸磷脂酰胆碱包覆中空多壳层结构的仿生人造细胞,HoMS的区室化结构和磷脂膜的选择透过性实现了酶的稳定包封和信号的高效传输.本研究通过信号的级联放大实现了胆固醇的快速准确检测.即利用负载胆固醇氧化酶的HoMS@DPPC引发胆固醇氧化反应,产生的中间产物H;2;O;2;作为信号分子,在负载辣根过氧化物酶的HoMS@DPPC催化作用下,促进荧光红染料生成试卤灵,再进行比色检测胆固醇的含量.由级联催化介导的胆固醇信号放大使得该系统可以应用于胆固醇检测,并且该方法表现出高的选择性和准确性,检测范围为0.05~0.3mM,检测限可达4.9μM.该方法可用于动物血清中胆固醇的检测,回收率为90.8%~104.9%,检测值与商业检测方法的结果高度吻合.此外,该系统可与智能设备集成,构建智能比色平台,实现图像分析与胆固醇浓度检测的一体化,为准确、快速的生化检测开辟了新途径.

关键词：图像分析设备集成生化检测胆固醇氧化酶选择透过性信号放大动物血清酶固定化

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Decoding lithium batteries through advanced in situ characterization techniques

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International Journal of Minerals,Metallurgy and Materials 2022年第5期29卷 965-989页

作者： Mei Yang Ruyi Bi Jiangyan Wang Ranbo Yu Dan Wang State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 10049China Department of Energy Storage Science and Engineering School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China

Given the energy demands of the electromobility market,the energy density and safety of lithium batteries(LBs)need to be improved,whereas its cost needs to be *** the enhanced performance and decreased cost,more suitable electrode and electrolyte materials should be developed based on the improved understanding of the degradation mechanisms and structure–performance correlation in the LB ***,various in situ characterization technologies have been developed during the past decades,providing abundant guidelines on the design of electrode and electrolyte *** we first review the progress of in situ characterization of LBs and emphasize the feature of the multi-model coupling of different characterization ***,we systematically discuss how in situ characterization technologies reveal the electrochemical processes and fundamental mechanisms of different electrode systems based on representative electrode materials and electrolyte ***,we discuss the current challenges,future opportunities,and possible directions to promote in situ characterization technologies for further improvement of the battery performance.

关键词： in situ characterization techniques multi-modal coupling lithium batteries electrochemical mechanism

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Novel magnetic carbon supported molybdenum disulfide catalyst and its application in residue upgrading

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green Energy & Environment 2021年第6期6卷 952-960页

作者： Xiangyang Zhu Dong Qiao Liangrong Yang Qinling Bi Huifang Xing Shan Ni Menglei Yuan Huizhou Liu Luhai Wang An Ma CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China c China University of Petroleum Beijing102249China Petrochemical Research Institute PetrochinaBeijing102206China

A novel hybrid material consisted of carbon covered Fe_(3)O_(4)nanoparticles and MoS_(2)nanoflower(FCM)was designed and prepared by micelle-assisted hydrothermal *** techniques,including X-Ray diffraction(XRD),high-resolution transmission electron microscopy(HRTEM)and X-ray photoelectron spectroscopy(XPS)were employed to characterize *** results show that FCM has a flower-like morphology with a 330 nm Fe_(3)O_(4)core as well as 70 nm highly crystalline MoS_(2)*** is superparamagnetic with a saturation magnetization of 35 emu *** hydrocracking of Canadian bitumen residue(CBR)was applied to estimate its catalytic *** results show that FCM exhibits superior catalytic hydrocracking activity compared to bulk MoS_(2)and commercial oil-dispersed Mo(CO)6 by the same Mo *** measurement by elemental analysis,XPS and XRD reveals that the MoS_(2)nanoflower with abundant catalytic active sites and covered carbon layer with anti-coke ability donate to the superior upgrading ***,the catalysts can be easily recovered by the external magnetic *** work provides a novel kind magnetic nanocatalyst which is potential for slurry-phase hydrocracking applications.■2020,Institute of process engineering,Chinese Academy of *** services by Elsevier *** behalf of KeAi Communications Co.,*** is an open access article under the CC BY-NC-ND license(http://***/licenses/by-nc-nd/4.0/).

关键词： Magnetic Carbon MoS_(2) Catalyst Heavy oil

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Ordered mesoporous carbon spheres assisted Ru nanoclusters/RuO_(2) with redistribution of charge density for efficient CO_(2) methanation in a novel H2/CO_(2)fuel cell

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Journal of Energy Chemistry 2022年第9期31卷 116-124,I0004页

作者： Yan Liu Tao Zhang Chao Deng Shixiu Cao Xin Dai Shengwu Guo Yuanzhen Chen Qiang Tan Haiyan Zhu Sheng Zhang Yongning Liu State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049ShaanxiChina Department of Chemical and Biochemical Engineering RutgersThe State University of New JerseyPiscataway 08854New JerseyUnited States Chongqing University Key Laboratory of Micro/Nano Materials Engineering and Technology Chongqing University of Arts and SciencesChongqing 402160China Institute of Modern Physics Northwest UniversityShaanxi Key Laboratory for Theoretical Physics FrontiersXi’an 710069ShaanxiChina Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

Efficiently reducing carbon dioxide(CO_(2))into carbon chemicals and fuels is highly desirable due to the rapid growth of atmospheric CO_(2)*** prior work,we described a unique H/CO_(2)fuel cell driven by low-valued waste heat,which not only CO_(2)nverts CO_(2)to methane(CH_(4))but also outputs electrical energy,yet the CO_(2)reduction rate needs to be urgently ***,a novel Ru-RuOcatalyst with heterostructure was grafted on mesoporous carbon spheres by in situ partially reducing RuOinto ultrasmall Ru clusters(~1 nm),in which heteroatom-doped carbon spheres as a matrix with excellent CO_(2)nductivity and abundant pores can not only easily CO_(2)nfine the formation of Ru nanocluster but also are beneficial to the exposed active sites of Ru CO_(2)mplex and the mass ***_(2)mpared to pure RuOnanoparticles supported on carbon spheres,our CO_(2)mposite catalyst boosts the CO_(2) nversion rate by more than 5-fold,reaching a value of 382.7μmol gcat.h-1at 170℃.Moreover,a decent output power density of 2.92 W mwas obtained from this H2/CO_(2)fuel cell using Ru-RuOembedded carbon spheres as a cathode *** Ru-RuOheterostructure can modify the adsorption energy of CO_(2)and induce the redistribution of charge density,thus boosting CO_(2)reduction *** work not only offers an efficient catalyst for this novel H_(2)/CO_(2)fuel cell but also presents a facile method to prepare Ru nanoclusters.

关键词： CO_(2)methanation Fuel cell Generating electricity Ru nanocluster/RuO_(2)hybrid Ordered mesoporous carbon spheres

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Facile one-pot emulsion/sol-gel method for preparing wrinkled silica microspheres

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Particuology 2021年第3期19卷 33-42页

作者： Yuning Hu Dongxia Hao Fangling Gong Yuanyuan Gao Xingran Yan Guanghui Ma State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of ScienceBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China

The present manuscript describes a facile and versatile method for preparing uniform wrinkled silica microspheres with diameters of tens of *** method comprises a one-pot emulsion/sol-gel method using silica precursors of organosilane and *** controlling the sol-to-gel transition of the silica precursors,a series of silica microspheres based on uniform emulsion droplets was synthesized by membrane *** silica microspheres had a variety of surface morphologies ranging from smooth,maze-like wrinkles to polygon-like *** was possible to alter the surface morphologies of the microspheres by controlling the amount of organosilane in the dispersed phase and the amount of ammonia catalyst in the continuous phase of the *** grooves on the wrinkled microspheres were able to trap polymer nanoparticles of matching size,thereby demonstrating the potential usefulness of the microspheres in separation science and drug delivery.

关键词： Wrinkled silica microsphere Membrane emulsification Emulsion/sol-gel method

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