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Mussel‐Directed synthesis of Nitrogen‐Doped Anatase TiO2

Angewandte Chemie 2016年第9期128卷

作者： Jingjing Xie Hao Xie Bao‐Lian Su Yi‐bing Cheng Xiaodong Du Hui Zeng Menghu Wang Weimin Wang Hao Wang Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology Wuhan 430070 P.R. China Laboratory of Inorganic Materials Chemistry University of Namur B-5000 Namur Belgium Department of Materials Engineering Monash University Victoria 3800 Australia Department of Pearl Research Guangdong Ocean University Zhanjiang 524025 P.R. China

Structure‐forming processes leading to biominerals are well worth learning in pursuit of new synthetic techniques. Strategies that attempt to mimic nature in vitro cannot replace an entire complex natural organism, requiring ingenuity beyond chemists′ hands. A “bioprocess‐inspired synthesis” is demonstrated for fabrication of N‐doped TiO 2 materials at ambient temperature by direct implantation of precursor into living mussels. The amorphous precursor transforms into N‐doped anatase TiO 2 with a hierarchical nanostructure. Synthetic TiO 2 exhibits high phase stability and enhanced visible‐light photocatalytic activity as a result of modifications to its band gap during in vivo mineralization. Intracellular proteins were found to be involved in TiO 2 mineralization. Our findings may inspire material production by new synthetic techniques, especially under environmentally benign conditions.

关键词： Raumtemperatur Biologisch inspirierte Synthesen Intrazelluläre Proteine Organismen Stickstoffdotiertes TiO2

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Strain derivatives of Tc in HgBa2CuO4+δ: The CuO2 plane alone is not enough

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Physical Review B 2014年第2期89卷 024515-024515页

作者： Shibing Wang Jianbo Zhang Jinyuan Yan Xiao-Jia Chen Viktor Struzhkin Wojciech Tabis Neven Barišić Mun K. Chan Chelsey Dorow Xudong Zhao Martin Greven Wendy L. Mao Ted Geballe Department of Geological and Environmental Sciences Stanford University Stanford California 94305 USA SIMES SLAC National Accelerator Laboratory Menlo Park California 94025 USA Department of Physics South China University of Technology Guangzhou 510640 China Advanced Light Source Lawrence Berkeley National Laboratory Berkeley California 94720 and Earth and Planetary Sciences University of California Santa Cruz California 95064 USA Geophysical Laboratory Carnegie Institution of Washington Washington DC 20015 USA Center for High Pressure Science and Technology Advanced Research Shanghai 201203 China School of Physics and Astronomy University of Minnesota Minneapolis Minnesota 55455 USA AGH University of Science and Technology Faculty of Physics and Applied Computer Science 30-059 Krakow Poland Service de Physique de l'Etat Condensé CEA-DSM-IRAMIS 91198 Gif-sur-Yvette France State Key Lab of Inorganic Synthesis and Preparative Chemistry Jilin University Changchun 130012 China Photon Science SLAC National Accelerator Laboratory Menlo Park California 94025 USA Department of Applied Physics and Geballe Laboratory for Advanced Materials Stanford University Stanford California 94305 USA

The strain derivatives of Tc along the a and c axes have been determined for HgBa2CuO4+δ (Hg1201), the simplest monolayer cuprate with the highest Tc of all monolayer cuprates (Tc = 97 K at optimal doping). The underdoped compound with the initial Tc of 65 K has been studied as a function of pressure up to 20 GPa by magnetic susceptibility and x-ray diffraction. The observed linear increase in Tc with pressure is the same as previously found for the optimally doped compound. The above results have enabled an investigation of the origins of the significantly different Tc values of optimally doped Hg1201 and the well-studied compound La2−xSrxCuO4 (LSCO), which has a maximal Tc of 40 K, or only 40% of that of Hg1201. Hg1201 can have almost identical CuO6 octahedra as LSCO if specifically strained. When the apical and in-plane CuO2 distances are the same for the two compounds, a large discrepancy in their Tc remains. Differences in crystal structures and interactions involving the Hg-O charge reservoir layers of Hg1201 may be responsible for the different Tc values exhibited by the two compounds.

关键词： MAGNETIC susceptibility MAGNETIC fields ELECTROMAGNETISM MAGNETISM STRAIN energy

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TiO 2 -rGO-Cu complex: A photocatalyst possessing an interfacial electron transport mechanism to enhance hydrogen production from seawater

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Chemical Physics Letters 2023年 822卷

作者： Lei Xia Yi Lu Yuan-Zhou Li Zhi-Yi Hu Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering Wuhan University of Technology 122 Luoshi Road Wuhan 430070 China Nanostructure Research Centre (NRC) Wuhan University of Technology 122 Luoshi Road 430070 Wuhan Hubei China Institut für Anorganische Chemie und Strukturchemie Heinrich-Heine-Universität Düsseldorf Universitätsstraße 1 Düsseldorf 40225 Germany

Photocatalytic hydrogen production from seawater has great prospects for generating clean energy from renewable resources. We designed a TiO 2 -rGO-Cu photocatalyst that possesses a pathway for directed electron transfer from nitrogen-doped TiO 2 to rGO and then to Cu nanoparticles, which leads to efficient electron-hole pairs separation. Results show that TiO 2 -rGO-Cu has a hydrogen production rate of 16.08 mmol h −1 g −1 in simulated seawater, which is as much as 25 times higher than that of TiO 2 . The mechanism for a highly efficient directional interfacial electron transport is proposed. The strategy could be effective for designing new photocatalysts for hydrogen production from seawater.

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The enhanced dyes removal and catalytic property for nanofused structural chromium-benzenedicarboxylate metal-organic framework

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Chemical Physics Letters 2022年 803卷

作者： Tian Zhao Wei Geng Ming Dong Yi Zhao Christoph Janiak Ling Shen Jie Ying Xiao-Yu Yang School of Chemical Engineering and Technology Sun Yat-sen University Zhuhai 519082 China Hunan University of Technology Zhuzhou 412007 China Institut für Anorganische Chemie und Strukturchemie Heinrich-Heine-Universität Düsseldorf Universitätsstr. 1 D-40225 Düsseldorf Germany State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao) Wuhan University of Technology Wuhan 430070 China

MIL-101(Cr) can be tailored by using different modulators in the synthesis to obtain several morphological variants, including micro-sized MIL-101(Cr) (M-MIL), nano-sized MIL-101(Cr) (N-MIL) and nanofused hierarchical porous MIL-101(Cr) (H-MIL). Though those MILs had comparable porosity, H-MIL possessed remarkable higher adsorption capacity toward the anionic dye Congo red (CR, 1467 mg/g) and cationic dye methylene blue (MB, 301 mg/g) than the other two samples. Furthermore, in the cyanosilylation reaction, H-MIL also revealed significantly enhanced catalytic activity (yield ∼ 95.1%). Thus, the outstanding performance of H-MIL could be attributed to its hierarchically porous structure which accelerated the mass transfer rate and exposed more catalytic active sites.

关键词： Nanofused hierarchical porous MIL-101 Morphology control Dye adsorption Enhanced catalytic property MIL materials of Institute Lavoisier

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Fine-structured TiO2 ceramic patterns on the ceramic surface fabricated by replication

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IOP Conference Series: materials Science and Engineering 2011年第1期20卷

作者： H D Kim T Nakayama B J Hong K Imaki T Yoshimura T Suzuki H Suematsu S W Lee Z Fu K Niihara Extreme Energy-Density Research Institute Nagaoka University of Technology 1603-1 Kamitomioka Nagaoka 940-2188 Japan Department of Physics and Electronics Graduate School of Engineering Osaka Prefecture University 1-1 Gakuencho Nakaku Sakai 599-8531 Japan Department of Environmental Engineering Sun Moon University Chungnam 336-708 Korea State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

The ability to fabricate high precision micro- to nanoscale structure in a wide variety of materials is of crucial importance for the advancement of microtechnology, nanotechnology and nanoscience. Also, the ability to create micrometer and sub-micrometer architecture for functional ceramics is a prerequisite of exploring the rich field of ceramic nanotechnology. In this work we fabricated three-dimensional oxide ceramic materials with fine-structure over multiple length scales by combining replication patterning technique, polyvinyl alcohol (PVA), oxide ceramic material (TiO2) nano-sized particles. Our study is based on the idea that PVA can be easily detached from a mold by peeling. We confirmed that micron and sub-micron-sized fine-structured oxide ceramic patterns containing nano-sized pores could be fabricated using this procedure. The results presented demonstrate the compositional and structural diversities that are possible with a facile approach and simple method.

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Cover Feature: Fabrication of Efficient and Stable Perovskite Solar Cells in High-Humidity Environment through Trace-Doping of Large-Sized Cations (ChemSusChem 11/2019)

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ChemSusChem 2019年第11期12卷 2328-2328页

作者： Xueping Liu Jiang He Pengfei Wang Yuhao Liu Junyan Xiao Dr. Zhiliang Ku Prof. Yong Peng Prof. Fuzhi Huang Prof. Yi-Bing Cheng Dr. Jie Zhong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 P.R. China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 P.R. China Department of Materials Science and Engineering Monash University VIC 3800 Australia ARC Centre of Excellence in Exciton Science Monash University Clayton VIC 3800 Australia

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From Millimeter to Subnanometer: Vapor–Solid Deposition of Carbon Nitride Hierarchical Nanostructures Directed by Supramolecular Assembly

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Angewandte Chemie 2017年第29期129卷

作者： Jingsan Xu Hong Wang Chao Zhang Xiaofei Yang Shaowen Cao Jiaguo Yu Menny Shalom School of Chemistry Physics and Mechanical Engineering Queensland University of Technology Brisbane Queensland 4000 Australia Department of Colloid Chemistry Max Planck Institute of Colloids and Interfaces Golm 14424 Potsdam Germany Department of Chemistry University of Toronto Toronto Ontario M5S 3H6 Canada State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China School of Materials Science and Engineering Jiangsu University Zhenjiang 212013 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Shape and nanostructure control has great potential to enable graphitic carbon nitride (C 3 N 4 ) structures with new properties and functionalities. In this work, a new type of hierarchically structured nanoporous C 3 N 4 is introduced. The C 3 N 4 exhibits unique, edelweiss‐like morphology, with components ranging from millimeter‐sized bunches to subnanometer‐thick layers. A one‐step vapor–solid deposition approach using supramolecular aggregates as the precursor is carried out to accomplish the growth. Supramolecular pre‐association plays a crucial role in achieving this nanostructure by directing the vaporization and deposition processes. Furthermore, very small C 3 N 4 quantum dots can be readily acquired by bath sonication of the thin layers in water. The supramolecular preorganization growth strategy developed herein may provide a general methodology in the design of advanced photoelectric materials with broad applications in energy conversion and storage.

关键词： Dampf-Feststoff-Wachstum Graphitische Kohlenstoffnitride Hierarchische Nanostrukturen Supramolekulare Assemblierung

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The Role of the Molecular Encapsulation Effect in Stabilizing Hydrogen-Bond-Rich Gel-state Lithium Metal Batteries

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Angewandte Chemie 2024年第27期136卷

作者： Hantao Xu Wei Deng Lei Shi Juncai Long Yongcai Zhang Prof. Lin Xu Prof. Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 P.R. China School of Chemistry and Chemical Engineering Yangzhou University Yangzhou 225009 P.R. China Hubei Longzhong Laboratory Wuhan University of Technology (Xiangyang Demonstration Zone) Xiangyang 441000 Hubei P.R. China Hainan Institute Wuhan University of Technology Sanya 572000 P.R. China

Gel-state polymer electrolytes with superior mechanical properties, self-healing abilities and high Li + transference numbers can be obtained by in situ polymerization of monomers with hydrogen-bonding moieties. However, it is overlooked that the active hydrogen atoms in hydrogen-bond donors experience displacement reactions with lithium metal in lithium metal batteries (LMBs), leading to corrosion of the lithium metal. Herein, it is discovered that the addition of hydrogen-bond acceptors to hydrogen-bond-rich gel-state electrolytes modulates the chemical activity of the active hydrogen atoms via the formation of hydrogen-bonded intermolecular interactions. The characterizations reveal that the added hydrogen-bond acceptors encapsulate the active hydrogen atoms to suppress the interfacial chemical corrosions of lithium metals, thereby enhancing the chemical stability of the polymer structure and interphase. With the employment of this strategy, a 1.1 Ah LiNi 0.8 Co 0.1 Mn 0.1 O 2 /Li metal pouch cell achieves stable cycling with 96.3 % capacity retention at 100 cycles. This new approach indicates a feasible path for achieving in situ polymerization of highly stable gel-state-based LMBs.

关键词： in situ polymerization molecular encapsulation effect interfaces lithium metal batteries gel-state polymer electrolytes

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Nerve Regeneration: Repairing Transected Peripheral Nerve Using a Biomimetic Nerve Guidance Conduit Containing Intraluminal Sponge Fillers (Adv. Healthcare Mater. 21/2019)

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advanced Healthcare materials 2019年第21期8卷

作者： Yuanjing Hou Xinyu Wang Zongrui Zhang Jing Luo Zhengwei Cai Yiyu Wang Yi Li State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan 430070 China College of Biochemical Engineering Anhui Polytechnic University Wuhu 241000 China School of Life Science Technology Hubei Engineering University Xiaogan 432000 China Institute of Textiles and Clothing The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong 999077 China

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Strong and Tough MXene Bridging-induced Conductive Nacre

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Angewandte Chemie 2024年第30期136卷

作者： Jia Yan Dr. Tianzhu Zhou Xinyu Yang Zejun Zhang Lei Li Prof. Zhaoyong Zou Prof. Zhengyi Fu Prof. Qunfeng Cheng School of Chemistry Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education Beihang University Beijing 100191 P. R. China School of Chemistry and Materials Science University of Science and Technology of China Hefei 230026 P. R. China Suzhou Institute for Advanced Research University of Science and Technology of China Suzhou 215123 P. R. China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China Institute of Energy Materials Science (IEMS) University of Shanghai for Science and Technology Shanghai 200093 P. R. China

Nacre is a classic model, providing an inspiration for fabricating high-performance bulk nanocomposites with the two-dimensional platelets. However, the “brick” of nacre, aragonite platelet, is an ideal building block for making high-performance bulk nanocomposites. Herein, we demonstrated a strong and tough conductive nacre through reassembling aragonite platelets with bridged by MXene nanosheets and hydrogen bonding, not only providing high mechanical properties but also excellent electrical conductivity. The flexural strength and fracture toughness of the obtained conductive nacre reach ~282 MPa and ~6.3 MPa m 1/2 , which is 1.6 and 1.6 times higher than that of natural nacre, respectively. These properties are attributed to densification and high orientation degree of the conductive nacre, which is effectively induced by the combined interactions of hydrogen bonding and MXene nanosheets bridging. The crack propagations in conductive nacre are effectively inhibited through crack deflection with hydrogen bonding, and MXene nanosheets bridging between aragonite platelets. In addition, our conductive nacre also provides a self-monitoring function for structural damage and offers exceptional electromagnetic interference shielding performance. Our strategy of reassembling the aragonite platelets exfoliated from waste nacre into high-performance artificial nacre, provides an avenue for fabricating high-performance bulk nanocomposites through the sustainable reutilization of shell resources.

关键词： aragonite platelet MXene mechanical properties electrical conductivity

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