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One-Step Synthesis of Ultrathin Carbon Nanoribbons from Metal–Organic Framework Nanorods for Oxygen Reduction and Zinc–Air Batteries

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CCS Chemistry 2022年第1期4卷 194-204页

作者： Lianli Zou Yong-Sheng Wei Chun-Chao Hou Miao Wang Yu Wang Hao-Fan Wang Zheng Liu Qiang Xu AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory(ChEM-OIL) National Institute of Advanced Industrial Science and Technology(AIST)Sakyo-kuKyoto 606-8501 Innovative Functional Materials Research Institute National Institute of Advanced Industrial Science and Technology(AIST)ShimoshidamiMoriyamakuNagoyaAichi 463-8560 Institute for Integrated Cell-Material Sciences(iCeMS) Kyoto UniversitySakyo-kuKyoto 606-8501 Department of Materials Science and Engineering SUSTech Academy for Advanced Interdisciplinary Studies and Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and DevicesSouthern University of Science and Technology(SUSTech)NanshanShenzhenGuangdong 518055

Two-dimensional(2D)carbon nanostructures play a critical role in energy-related applications,but developing facile and efficient strategies to synthesize these kinds of nanostructures is extremely ***,ultrathin carbon nanoribbons(CNRibs),with a thickness of 2–6 nm and length over 100 nm,have been strategically fabricated via a one-step pyrolysis of one-dimensional(1D)metal–organic framework nanorods(MOF NRods).Manipulating the diameters of MOF NRods will result in the formation of porous carbon nanostructures in 1D or 2D *** CNRibs with N doping or metal active site immobilization have also been *** CNRibs decorated with iron nanoclusters and single atoms have been used as excellent catalysts for the oxygen reduction reaction under both alkaline and acidic conditions,as well as zinc–air *** work gives deep insights into the structural evolution from 1D to 2D morphology,providing an efficient approach to fabricate low-dimensional nanomaterials with controllable morphologies and functionalities for electrochemical applications.

关键词： carbon nanoribbon carbon nanorod metal-organic frameworks metal nanocluster oxygen reduction reaction

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Resource Recovery of WC-Co Cermet using Hydrothermal Oxidation Technique

Resource Recovery of WC-Co Cermet using Hydrothermal Oxidati...

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The 3～〔rd〕International Conference on High-Performance Ceramics(CICC-3)（2）

作者： Fumihito Inagaki Ryo Sasai Hideaki Itoh Koji Watari EcoTopia Science Institute Nagoya University Furo-cho Chikusa-ku Nagoya 464-8603 Japan EcoTopia Science Institute Nagoya University Furo-cho Chikusa-ku Nagoya 464-8603 Japan EcoTopia Science Institute Nagoya University Furo-cho Chikusa-ku Nagoya 464-8603 Japan Advanced Manufacturing Research Institute National Institute of Advanced Industrial Science and Technology 2266-98 AnagahoraShimoshidami Moriyama-ku Nagoya 463-8560 Japan

＜正＞ WC-Co cermet is widely used in industrial applications such as cutting tools, dies, wear parts and so on. It is of great importance to establish the recycling process for the precious metal resources contained in WC-Co cermet, because all these metals used in Japan are imported. In this paper we reported a hydrothermal oxidation technique using nitric acid for the reclamation of WC and Co. The WC-Co cermet specimens with various WC particle sizes and Co contents were hydrothermally treated in HNO3 aqueous solutions at temperatures of 110-200℃for durations of 6-240 h. The Co was preferentially leached out into the acidic solution, while the WC was oxidized to insoluble WO3 hydrate which was subsequently separated by filtration. The hydrothermal treatment parameters such as solvent concentrations, treatment temperatures, holding time were optimized in respect to different kinds of WC-Co cermets. A hydrothermal oxidation treatment in 3M HNO3 aqueous solution at 150℃for 24 h was capable of fully disintegrating the cermet chip composed of coarse WC grains of 1-5 μm in size with 20 wt% of Co as binder. While the more oxidation resistant specimen composed of fine WC grains of 0.5-1.0 urn in size with 13 wt% of Co, was completely disintegrated by a treatment in 7 M HNO3 aqueous solution at 170℃for 24 h. The filtered solid residues were composed of fine WO3.0.33H2O powder and a small amount of WO3. The recovered WO3.0.33H2O powder can be easily returned to the industrial process for the synthesis of WC powder so that the overall recycling cost can be possibly lowered.

关键词： WC-Co cermet Precious metal Hydrothermal oxidation Material recycling

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基于蒸汽炉物煅烧氧化铋构成复合物自由引导压电材料性能的研究

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苏州大学学报（工科版） 2004年第5期24卷 6-7页

作者： Yuji Enomoto Kazumi Kato Hiroshi Matsuda Dept of Functional Machinery and Mechanics National Institute of Advanced Industrial Science and Technology2266-8 AnagahoraShimoshidamiMoriyamakuNagoya463-8569JapanDept of Functional Machinery and Mechanics Faculty of Textile Science and EngineeringShinshuUniversity3-15-1 TokidaUedaNagano386-8567JapanFaculty of Textile Science and EngineeringShinshuUniversity3-15-1 TokidaUedaNagano386-8567Japan

0引言由于环境污染问题,取代传统的基于引导的PZT自由引导压电材料得到了发展.其中CaBi4Ti4O15由于其多极性显示出铁和压电特性.在早期研究中[1-3], Ca-Bi-Ti合成醇盐的旋转涂层薄膜作为一个前期方案,通过钙、铋的氧化物和锑的异丙氧化... 详细信息

0引言由于环境污染问题,取代传统的基于引导的PZT自由引导压电材料得到了发展.其中CaBi4Ti4O15由于其多极性显示出铁和压电特性.在早期研究中[1-3], Ca-Bi-Ti合成醇盐的旋转涂层薄膜作为一个前期方案,通过钙、铋的氧化物和锑的异丙氧化物在酒精和2-甲氧基乙氧基混合物中的化学反应已经很好地合成[1].这种方案是在Si(111)的硅晶片上旋转涂层,在130℃下干燥,然后再在350℃的空气中煅烧,最后再用电炉加温到700℃[3].d33是在显微镜下观察到的30 pm/V的压电回应力的特性[3].为了提高薄膜的压电特性,再煅烧薄膜使得金属相位从醇盐中充分分解.最后我们使用高温蒸汽熔炉代替电加热熔炉,因为更高的煅压力可以得到更好的高温蒸汽反应.本文描述了寻找最合适的煅烧条件来煅烧Si(111)CBTi144上硅晶片的初步报告.

关键词：蒸汽炉煅烧氧化铋复合物自由引导压电材料性能硅晶片

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