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Inside Back Cover: Nucleation and Growth of Amino Acid and Peptide Supramolecular Polymers through Liquid–Liquid Phase Separation (Angew. Chem. Int. Ed. 50/2019)

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Angewandte Chemie International Edition 2019年第50期58卷

作者： Dr. Chengqian Yuan Dr. Aviad Levin Dr. Wei Chen Dr. Ruirui Xing Dr. Qianli Zou Dr. Therese W. Herling Dr. Pavan Kumar Challa Prof. Tuomas P. J. Knowles Prof. Xuehai Yan State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Cavendish Laboratory University of Cambridge CB3 0FE Cambridge UK Center for Mesoscience Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China

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Innenrücktitelbild: Nucleation and Growth of Amino Acid and Peptide Supramolecular Polymers through Liquid–Liquid Phase Separation (Angew. Chem. 50/2019)

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Angewandte Chemie 2019年第50期131卷

作者： Chengqian Yuan Aviad Levin Wei Chen Ruirui Xing Qianli Zou Therese W. Herling Pavan Kumar Challa Tuomas P. J. Knowles Xuehai Yan State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Cavendish Laboratory University of Cambridge CB3 0FE Cambridge UK Center for Mesoscience Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China

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Transition metal-doped heteropoly catalysts for the selective oxidation of methacrolein to methacrylic acid

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Frontiers of Chemical Science and engineering 2016年第1期10卷 139-146页

作者： Yanxia Zheng Heng Zhang Lei Wang Suojiang Zhang Shaojun Wang School of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian 116034 China Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China School of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 China

Heteropoly compounds with the general formula Cs1Mo.5X＋H3-o.5xP1.2MOllVO4o （M = Fe, Co, Ni, Cu or Zn） and CslCuyH3_2yP1.2MO11VO40 （y = 0.1, 0.3 or 0.7） were synthesized and then used as catalysts for the selective oxidation of methacrolein to methacrylic acid. The effects of the transition metals on the structure and activity of the catalysts were investigated. FTIR spectra showed that the transition metal-doped catalysts main- tained the Keggin structure of the undoped catalysts. X-ray diffraction results indicated that before calcination, the catalysts doped with Fe and Cu had cubic secondary structures, while the catalysts doped with Co, Ni or Zn had both triclinic and cubic phases and the Co-doped catalyst had the highest content of the triclinic form. Thermal treatment can decrease the content of the triclinic phase. NH3 temperature-programmed desorption and H2 tem- perature-programmed reduction results showed that the transition metals changed the acid and redox properties of the catalysts. The addition of Fe or Cu had positive effects on the activities of the catalyst which is due to the improvement of the electron transfer between the Fe or Cu and the Mo. The effects of the copper content on structure and catalytic activity were also investigated. The CSlCUo.3H2P1.2MO11VO40 catalyst had the best performance for the selective oxidation of methacrolein to methacrylic acid.

关键词： heteropoly compounds transition metals selective oxidation methacrolein

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Modular Design of Noble‐Metal‐Free Mixed Metal Oxide Electrocatalysts for Complete Water Splitting

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Angewandte Chemie 2019年第14期131卷

作者： Dandan Gao Rongji Liu Johannes Biskupek Ute Kaiser Yu‐Fei Song Carsten Streb Institute of Inorganic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences 100190 Beijing P. R. China Electron Microscopy of Materials Science Central Facility for Electron Microscopy Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology 100029 Beijing P. R. China Helmholtz-Institute Ulm Helmholtzstrasse 11 89081 Ulm Germany

Electrocatalytic water splitting into H 2 and O 2 is a key technology for carbon‐neutral energy. Here, we report a modular materials design leading to noble metal‐free composite electrocatalysts, which combine high electrical conductivity, high OER and HER reactivity and high durability. The scalable bottom‐up fabrication allows the stable deposition of mixed metal oxide nanostructures with different functionalities on copper foam electrodes. The composite catalyst shows sustained OER and HER activity in 0.1 m aqueous KOH over prolonged periods ( t >10 h) at low overpotentials (OER: ≈300 mV; HER: ≈100 mV) and high faradaic efficiencies (OER: ≈100 %, HER: ≈98 %). The new synthetic concept will enable the development of multifunctional, mixed metal oxide composites as high‐performance electrocatalysts for challenging energy conversion and storage reactions.

关键词： Elektrokatalyse Metalloxid Polyoxometallate Selbstassemblierung Wasserspaltung

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Aerodynamic levitated laser annealing method to defective titanium dioxide with enhanced photocatalytic performance

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Nano Research 2016年第12期9卷 3839-3847页

作者： Hehe Wei Xiaoguang Ma Liu Gu Jianqiang Li Wenjie Si Gang OU Wen Yu Chunsong Zhao Jiaying Li Mingjun Song Zhijian Peng Hui Wu State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China School of Engineering and Technology China University of Geosciences Beijing 100083 China Department of Chemistry and Collaborative Innovation Center for Nanomatefial Science and Engineering Tsinghua University Beijing 100084 China

Defective TiO2 has attracted increasing attention for use in photocatalytic and electrochemical materials because of its narrowed band-gap and improved visible-light photocatalytic activity. However, a facile and efficient approach for obtaining defect-rich TiO2 still remains a challenge. Herein, we demonstrate such an approach to narrow its bandgap and improve visible-light absorption through implanting abundant defects by aerodynamic levitated laser annealing （ALLA） treatment. Note that the ALLA method not only provides rapid annealing, solidifying and cooling process, but also exhibits high efficiency for homogeneous and defective TiO2 nanoparticles. The laser-annealed TiO2 achieves a high hydrogen evolution rate of 8.54 mmol.h-1.g-1, excellent decomposition properties within 60 min, and outstanding recyclability and stability, all of which are superior to the corresponding properties of commercial P25.

关键词： hydrogen evolution TiO2 photocatalyst laser annealing

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Frontispiece: Amino Acid Coordinated Self-Assembly

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Chemistry – A European Journal 2018年第4期24卷

作者： Assoc. Prof. Qianli Zou Prof. Xuehai Yan State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Center for Mesoscience Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China

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Construction of a sp3/sp2Carbon Interface in 3D N‐Doped Nanocarbons for the Oxygen Reduction Reaction

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Angewandte Chemie 2019年第42期131卷

作者： Jian Gao Yun Wang Haihua Wu Xi Liu Leilei Wang Qiaolin Yu Aowen Li Hong Wang Chuqiao Song Zirui Gao Mi Peng Mengtao Zhang Na Ma Jiaou Wang Wu Zhou Guoxiong Wang Zhen Yin Ding Ma State Key Laboratory of Separation Membranes and Membrane Processes Department of Chemical Engineering Tianjin Polytechnic University 399 Binshui West Road Tianjin 300387 China Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering and College of Engineering and BIC-ESAT Peking University Beijing 100871 China Tianjin Key Laboratory of Green Chemical Technology and Process Engineering Tianjin Polytechnic University Tianjin 300387 China Centre for Clean Environment and Energy Gold Coast Campus Griffith University Queensland 4222 Australia State Key Laboratory of Catalysis CAS Center for Excellence in Nanoscience Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China SynCat@Beijing Synfuels China Technology Co. Ltd. Beijing 101407 China School of Physical Sciences CAS Key Laboratory of Vacuum Physics University of Chinese Academy of Sciences Beijing 100049 China School of Materials Science and Engineering Tianjin Polytechnic University Tianjin 300387 China Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

The development of highly efficient metal‐free carbon electrocatalysts for the oxygen reduction reaction (ORR) is one very promising strategy for the exploitation and commercialization of renewable and clean energy, but this still remains a significant challenge. Herein, we demonstrate a facile approach to prepare three‐dimensional (3D) N‐doped carbon with a sp 3 /sp 2 carbon interface derived from ionic liquids via a simple pyrolysis process. The tunable hybrid sp 3 and sp 2 carbon composition and pore structures stem from the transformation of ionic liquids to polymerized organics and introduction of a Co metal salt. Through tuning both composition and pores, the 3D N‐doped nanocarbon with a high sp 3 /sp 2 carbon ratio on the surface exhibits a superior electrocatalytic performance for the ORR compared to that of the commercial Pt/C in Zn–air batteries. Density functional theory calculations suggest that the improved ORR performance can be ascribed to the existence of N dopants at the sp 3 /sp 2 carbon interface, which can lower the theoretical overpotential of the ORR.

关键词： Elektrokatalyse Metall-Luft-Batterien Metallfreie Elektrokatalysatoren Poröser Kohlenstoff Sauerstoffentwicklungsreaktion

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Enhanced light harvesting and electron collection in quantum dot sensitized solar cells by TiO₂passivation on ZnO nanorod arrays

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Science China Materials 2017年第3期60卷 239-250页

作者： Zhao, Haifeng Wu, Qiang Hou, Juan Cao, Haibin Jing, Qun Wu, Rong Liu, Zhiyong School of Science/Key Laboratory of Ecophysics and Department of Physics Shihezi University Shihezi 832003 China School of Chemistry and Chemical Engineering/Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan Shihezi University Shihezi 832003 China Key Laboratory of Solid-state Physics and Devices School of Physical Science and Technology Xinjiang University Urumqi 830046 China

Light capture and electron recombination are the essential processes that determine power conversion efficiency (PCE) in quantum dot sensitized solar cells (QDSCs). It is well known that charges are easily transported in well-built QDSCs based on nanorod arrays. However, this advantage can be drastically weakened by defects located at the zinc oxide (ZnO) array surface which permit faster electron recombination. Hence, we developed a composite nanostructure consisting of ZnO nanorods coated with orthorhombic configuration titanium dioxide (TiO₂) nanoparticles, which were synthesized using a solution of H₃BO₃and (NH₄)₂TiF₆. This composite nanostructure was designed to take the advantage of the enlarged surface area provided by the nanoparticles and improved electron transport along the nanorods, in order to yield good charge transport and light harvesting. At the same time, the TiO₂/ZnO nanorod arrays have fewer recombination centers (hydroxyl groups) after TiO₂modification, which results in fewer electron trapping events at the ZnO nanorod surface;thereby, a reduced charge recombination and longer electron lifetime can be achieved. As a result, the PCE of the QDSCs with TiO₂-nanoparticles-decorated ZnO nanorod arrays photoelectrode reaches 4.8%, which is ~78% higher efficiency compared to 2.7% for solar cells without modification. © 2017, Science China Press and Springer-Verlag Berlin Heidelberg.

关键词： quantum dot sensitized solar cells TiO2nanoparticles ZnO nanorod arrays

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High Phase‐Purity 1T‐MoS2Ultrathin Nanosheets by a Spatially Confined Template

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Angewandte Chemie 2019年第49期131卷

作者： Xiaoyu Chen Zumin Wang Yanze Wei Xing Zhang Qinghua Zhang Lin Gu Lijuan Zhang Nailiang Yang Ranbo Yu Department of Physical Chemistry School of Metallurgical and Ecological Engineering University of Science and Technology Beijing No. 30 Xueyuan Road Haidian District Beijing 100083 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences 1 North 2nd Street Zhongguancun Beijing 100190 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences 19A Yuquan Road Beijing 10049 P. R. China Key Laboratory of Advanced Material Processing & Mold (Ministry of Education) Zhengzhou University Zhengzhou 450002 P. R. China

The crystal phase plays an important role in controlling the properties of a nanomaterial; however, it is a great challenge to obtain a nanomaterial with high purity of the metastable phase. For instance, the large‐scale synthesis of the metallic phase MoS 2 (1T‐MoS 2 ) is important for enhancing electrocatalytic reaction, but it can only be obtained under harsh conditions. Herein, a spatially confined template method is proposed to synthesize high phase‐purity MoS 2 with a 1T content of 83 %. Moreover, both the confined space and the structure of template will affect the purity of 1T‐MoS 2 ; in this case, this approach was extended to other similar spatially confined templates to obtain the high‐purity material. The obtained ultrathin nanosheets exhibit good electrocatalytic activity and excellent stability in the hydrogen evolution reaction.

关键词： Interkalation Metastabile Phasen Molybdendisulfid Nanoschichten Wasserstoffentwicklungsreaktion

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Cancer Therapy: Highly Efficient In Vivo Cancer Therapy by an Implantable Magnet Triboelectric Nanogenerator (Adv. Funct. Mater. 41/2019)

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Advanced Functional Materials 2019年第41期29卷

作者： Chaochao Zhao Hongqing Feng Lijun Zhang Zhe Li Yang Zou Puchuan Tan Han Ouyang Dongjie Jiang Min Yu Chan Wang Hu Li Lingling Xu Wei Wei Zhou Li CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro‐nano Energy and Sensor Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 P. R. China School of Nanoscience and Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Center on Nanoenergy Research School of Physical Science and Technology Guangxi University Nanning 530004 P. R. China

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