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作者： Wang, Qi Yang, Mei Xiao, Jiusan Zhu, Hongmin School of Metallurgical and Ecological 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 Department of Metallurgy Graduate School of Engineering Tohoku University Sendai980-8579 Japan

Commercial Si3N4 powders coated with 030% amorphous Si3N4 nano-powders were fabricated successfully. Amorphous Si3N4 nano-powders coating were prepared through the reduction of silicon tetrachloride (SiCl4) by sodium in liquid ammonia at 45C. Dense Si3N4 ceramics with 97.2% relative density of theoretic value were obtained from Si3N4 micro-powders coated with 30% nano-powders sintered by spark plasma sintering at 1500C without sintering additives. © 2017 The Ceramic Society of Japan. All rights reserved.

关键词： Fabrication

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Multi-shelled TiO2/Fe2TiO5 heterostructured hollow microspheres for enhanced solar water oxidation

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Nano Research 2017年第11期10卷 3920-3928页

作者： Muhammad Waqas Yanze Wei Dan Mao Jian Qi Yu Yang Bao Wang Dan Wang State Key Laboratory of Biochemical Engineering CAS Center for Excellence in Nanoscience Institute of Process Engineering Chinese Academy of Sciences 1 North 2nd Street Zhongguancun Haidian District Beijing 100190 China Department of Physical Chemistry School of Metallurgical and Ecological Engineering University of Science & Technology Beijing No.30 Xueyuan Road Haidian District Beijing 100083 China University of Chinese Academy of Sciences Chinese Academy of Sciences No.19A Yuquanlu Beijing 100049 China

There remains a pressing challenge in the fabrication of superior photocatalysts for light-driven water ***,we designed and fabricated heterostructured TiO2/Fe2TiO5 hollow microspheres with single-,double-,closed-double-,triple-,and core-shell structures and different Fe/Ti molar ratios using a facile sequential templating *** closed-double-shelled TiO2/Fe2TiO5 hollow microspheres with 35% Fe exhibited the highest oxygen evolution reaction rate up to 375 μmol＆#183;g-1＆#183;h-1 and good stability for 5 *** high performance can be attributed to the closed-double shell,which had more reactive sites and greater light-harvesting ability,self-supported thin shells with short charge-transfer paths,and a favorable staggered band alignment between the TiO2 and Fe2TiOs.

关键词： multi-shelled hollow microsphere titanium oxide pseudo-brookite heterostructure photocatalytic water oxidation

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Effect of atmosphere on sodium migration during conversion of high sodium coals

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Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology 2018年第5期46卷 513-520页

作者： Luo, An-Qi Zhu, Ping Zhang, Jian-Shu Qu, Xuan Zhang, Rong Bi, Ji-Cheng Zhang, Jin-Li Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical Engineering Shihezi University Shihezi832003 China State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan030001 China

The sodium release and transformation of Yili (YL) and Hutubi (HTB) coal were examined at different temperatures under N2, CO2 and H2O atmospheres. By using sequential extraction and wet digestion separately, the occurrence mode and content of sodium in raw coal and chars were measured. The migration of sodium in two coals was studied qualitatively and quantitatively. The results show that water soluble sodium in YL coal accounts for 80.08%, while in HTB, insoluble sodium is 61.54%. The volatilization of sodium in two coals increases with increasing temperature. Water soluble sodium in semi coke shows a decrease trend;ammonium acetate soluble sodium increases and then decreases;hydrochloric acid soluble sodium exhibits an increasing tendency. For YL volatilization of sodium is inhibited by CO2 while it is promoted by H2O compared with N2. At 900 ℃ volatilization of sodium under CO2 and H2O is 50.25% and 111.45%, respectively, of that under N2. CO2 atmosphere can inhibit volatilization of sodium in HTB. At 900 ℃ volatilized sodium under CO2 is 80.91% of that under N2. In H2O atmosphere, volatilization of sodium is higher than that in N2 before 800 ℃ and slightly lower than that in N2 at 900 ℃. The predominant sodium in YL coal is water soluble which volatilized during increasing temperature and transformed to hydrochloric acid soluble and insoluble sodium simultaneously. While for HTB, insoluble sodium is the dominant occurrence mode, followed by water soluble one. CO2 and H2O can promote transformation of insoluble sodium to soluble one in HTB coal. © 2018, Science Press. All right reserved.

关键词： Sodium

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Supramolecular Photothermal Effects: A Promising Mechanism for Efficient Thermal Conversion

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Angewandte Chemie 2019年第10期132卷

作者： Luyang Zhao Yamei Liu Ruirui Xing Xuehai Yan State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences No. 1 North Second Street Zhongguancun Beijing 100190 China Center for Mesoscience Institute of Process Engineering Chinese Academy of Sciences No. 1 North Second Street Zhongguancun Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

Supramolecular assemblies have been very successful in regulating the photothermal conversion efficiency of organic photothermal materials in a simple and flexible way, compared with conventional molecular synthesis. In these assemblies, it is the inherent physiochemical mechanism that determines the photothermal conversion, rather than the assembly strategy. This Minireview summarizes supramolecular photothermal effects, which refer to the unique features of supramolecular chemistry for regulating the photothermal conversion efficiency. Emphasis is placed on the mechanisms of how self‐assembly affects the photothermal performance. The supramolecular photothermal effects on various types of light‐harvesting species are discussed in detail. The timely interpretation of supramolecular photothermal effects is promising for the future design of the photothermal materials with high efficiency, precision, and multiple functionalities for a wide array of applications.

关键词： Intermolekulare Stapelung Lichtsammelspezies Selbstassemblierung Supramolekulare photothermische Effekte Thermische Energie

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The Emulsion Particulate Strategy: The Horizon of the Emulsion Particulate Strategy: engineering Hollow Particles for Biomedical Applications (Adv. Mater. 38/2019)

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Advanced Materials 2019年第38期31卷

作者： Yufei Xia Xiangming Na Jie Wu Guanghui Ma State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 P. R. China PLA Key Laboratory of Biopharmaceutical Production & Formulation Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing 211816 P. R. China

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Selective Separation of Co2 Using Novel Mixed Matrix Membranes Based on Pebax and Liquid-Like Nanoparticle Organic Hybrid Materials

SSRN

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SSRN 2018年

作者： Wang, Junfeng Fang, Wenjuan Luo, Jianquan Gao, Ming Wan, Yinhua Zhang, Suojiang Zhang, Xiangping Park, Ah-Hyung Alissa State Key Laboratory of Biochemical Engineering Institute of Process Engineering University of the Chinese Academy of Sciences Chinese Academy of Sciences Beijing100190 China School of Materials Science and Engineering Beijing Institute of Technology Beijing100081 China Departments of Earth & Environmental Engineering and Chemical Engineering Lenfest Center for Sustainable Energy Columbia University 500 W. 120th Street New YorkNY10027 United States

Pebax1657 is known as a promising polymeric membrane material for CO2 separation. In order to further improve its gas separation performance, different polymers containing ethylene oxide (EO) groups were incorporated into the Pebax1657 matrix to form mixed matrix membranes. Liquid-like nanoparticle organic hybrid materials (NOHM-I-HPE, "I" stands for "ionic bond" and "HPE" refers to polyetheramine ("PE") with a high ("H") ether group content), which were made of polyetheramine chains tethered onto functionalized silica nanoparticles, have shown high solubility of CO2. In this study, the homogenous NOHM-I-HPE/Pebax1657 mixed matrix membranes with different NOHM-IHPE loadings were prepared and investigated. The results of differential scanning calorimetry (DSC) and X-ray photoelectron spectroscopy (XPS) indicated that the addition of NOHM-I-HPE resulted in a decrease in glass transition temperature of Pebax1657 and an increase in EO content of the mixed matrix membrane. Single gas permeabilities of CO2, N2 and CH4 at 23 °C and 1 bar were measured using the time-lag method. For the NOHM-I-HPE loading ranging from 0 to 60 wt.%, solubility coefficients of the mixed matrix membranes for CO2 greatly increased from 1.16 to 3.84 cm3 (STP)/(cm3·bar), while those for CH4 and N2 only slightly increased from 0.078 to 0.094 cm3 (STP)/(cm3·bar) and from 0.013 to 0.026 cm3 (STP)/(cm3·bar), respectively. CO2 permeability increased four times compared to the pure Pebax1657 membrane after the incorporation of 60 wt.% NOHM-I-HPE in Pebax1657. Although the CO2/N2 selectivity slightly decreased with an increase in the NOHM-I-HPE loading, the CO2/CH4 selectivity was improved in the newly developed NOHM-IHPE/Pebax1657 mixed matrix membranes. These results indicate that the NOHM-I-HPE/Pebax1657 mixed matrix membranes are very promising candidates for selective CO2 separation for various energy related applications. © 2018, The Authors. All rights reserved.

关键词： Carbon dioxide

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Vaccine Platforms: Biosynthesis of Self‐Assembled Proteinaceous Nanoparticles for Vaccination (Adv. Mater. 42/2020)

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Advanced Materials 2020年第42期32卷

作者： Chao Pan Jun Wu Shuang Qing Xiao Zhang Lulu Zhang Hua Yue Ming Zeng Bin Wang Zheng Yuan Yefeng Qiu Huahu Ye Dongshu Wang Xiankai Liu Peng Sun Bo Liu Erling Feng Xiaoyong Gao Li Zhu Wei Wei Guanghui Ma Hengliang Wang State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Biotechnology No. 20 Dongda Street Fengtai District Beijing 100071 P. R. China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences No. 1 Bei‐Er‐Tiao Zhong‐Guan‐Cun Haidian District Beijing 100190 P. R. China National Institutes for Food and Drug Control No. 31 Huatuo Road Daxin District Beijing 102629 P. R. China Animal Center of the Academy of Military Medical Sciences No. 20 Dongda Street Fengtai District Beijing 100071 P. R. China School of Chemical Engineering University of Chinese Academy of Sciences No. 19A Yuquan Road Shijingshan District Beijing 100049 P. R. China

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A Rutile TiO2Electron Transport Layer for the Enhancement of Charge Collection for Efficient Perovskite Solar Cells

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Angewandte Chemie 2019年第28期131卷

作者： Yongling Wang Jiawei Wan Jie Ding Jin‐Song Hu Dan Wang State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences 1 North 2nd Street Zhongguancun Haidian Beijing 100190 China University of Chinese Academy of Sciences No.19A Yuquan Road Beijing 100049 China Beijing National Laboratory for Molecular Sciences (BNLMS) CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Institute of Chemistry Chinese Academy of Sciences Zhongguancun North First Street 2 100190 Beijing China

Interfacial charge collection efficiency has demonstrated significant effects on the power conversion efficiency (PCE) of perovskite solar cells (PSCs). Herein, crystalline phase‐dependent charge collection is investigated by using rutile and anatase TiO 2 electron transport layer (ETL) to fabricate PSCs. The results show that rutile TiO 2 ETL enhances the extraction and transportation of electrons to FTO and reduces the recombination, thanks to its better conductivity and improved interface with the CH 3 NH 3 PbI 3 (MAPbI 3 ) layer. Moreover, this may be also attributed to the fact that rutile TiO 2 has better match with perovskite grains, and less trap density. As a result, comparing with anatase TiO 2 ETL, MAPbI 3 PSCs with rutile TiO 2 ETL delivers significantly enhanced performance with a champion PCE of 20.9 % and a large open circuit voltage ( V OC ) of 1.17 V.

关键词： Grenzflächen Ladungsträger-Lebensdauer Leerlaufspannung Perowskitsolarzellen Rutil-TiO2

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Hollow Multi‐Shelled Structural TiO2−xwith Multiple Spatial Confinement for Long‐Life Lithium–Sulfur Batteries

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Angewandte Chemie 2019年第27期131卷

作者： Esmail Husein M. Salhabi Jilu Zhao Jiangyan Wang Mei Yang Bao Wang Dan Wang State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences 1 North 2nd Street Zhongguancun Haidian District Beijing 100190 China University of Chinese Academy of Sciences Chinese Academy of Sciences No. 19A Yuquanlu Beijing 100049 China

TiO 2− x with well‐controlled hollow multi‐shelled structures (HoMSs) were designed and synthesized, via a sequential templating approach (STA), to act as sulfur carrier materials. They were explored as physico‐chemical encapsulation materials. Particularly, the sulfur cathode based on triple‐shelled TiO 2− x HoMSs delivered a specific capacity of 903 mAh g −1 with a capacity retention of 79 % at 0.5 C and a Coulombic efficiency of 97.5 % over 1000 cycles. The outstanding electrochemical performance is attributed to better spatial confinement and integrated conductivity of the intact triple‐shell that combine the features of physico‐chemical adsorption, short charge transfer path along with mechanical strength.

关键词： Hohle mehrschalige Strukturen Li-S-Batterien Polysulfide Titan

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Multicomponent Reductive Cross‐Coupling of an Inorganic Sulfur Dioxide Surrogate: Straightforward Construction of Diversely Functionalized Sulfones

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Angewandte Chemie 2019年第3期132卷

作者： Yingying Meng Ming Wang Xuefeng Jiang Shanghai Key Laboratory of Green Chemistry and Chemical Process School of Chemistry and Molecular Engineering East China Normal University 3663 North Zhongshan Rd. Shanghai 200062 P. R. China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai P. R. China

Conventionally, sulfones are prepared by oxidation of sulfides with strong oxidants. Now, a multicomponent reductive cross‐coupling involving an inorganic salt (sodium metabisulfite) for the straightforward construction of sulfones is disclosed. Both intramolecular and intermolecular reductive cross‐couplings were comprehensively explored, and diverse sulfones were accessible from the corresponding alkyl and aryl halides. Intramolecular cyclic sulfones were systematically obtained from five‐ to twelve‐membered rings. Naturally occurring aliphatic systems, such as steroids, saccharides, and amino acids, were highly compatible with the SO 2 ‐insertion reductive cross‐coupling. Four clinically applied drug molecules, which include multiple heteroatoms and functional groups with active hydrogens, were successfully prepared via a late‐stage SO 2 insertion. Mechanistic studies show that alkyl radicals and sulfonyl radicals were both involved as intermediates in this transformation.

关键词： Natriummetabisulfit Radikale Reduktive Kreuzkupplung Schwefeldioxid Sulfon

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