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海上风电 1

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Platinum on nitrogen doped graphene and tungsten carbide supports for ammonia electro-oxidation reaction

《化学科学与工程前沿（英文）》 2022年第16卷第6期页码 930-938 doi: 10.1007/s11705-021-2130-2

摘要： Ammonia electrooxidation reaction involving multistep electron-proton transfer is a significant reaction for fuel cells, hydrogen production and understanding nitrogen cycle. Platinum has been established as the best electrocatalyst for ammonia oxidation in aqueous alkaline media. In this study, Pt/nitrogen-doped graphene (NDG) and Pt/tungsten monocarbide (WC)/NDG are synthesized by a wet chemistry method and their ammonia oxidation activities are compared to commercial Pt/C. Pt/NDG exhibits a specific activity of 0.472 mA∙cm^–2, which is 44% higher than commercial Pt/C, thus establishing NDG as a more effective support than carbon black. Moreover, it is demonstrated that WC as a support also impacts the activity with further 30% increase in comparison to NDG. Surface modification with Ir resulted in the best electrocatalytic activity with Pt-Ir/WC/NDG having almost thrice the current density of commercial Pt/C. This work adds insights regarding the role of NDG and WC as efficient supports along with significant impact of Ir surface modification.

关键词： Ammonia electro-oxidation reaction electrocatalyst supports platinum nitrogen doped graphene tungsten carbide

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Catalytic ozonation performance and surface property of supported Fe

Zhendong YANG, Aihua LV, Yulun NIE, Chun HU

《环境科学与工程前沿（英文）》 2013年第7卷第3期页码 451-456 doi: 10.1007/s11783-013-0509-0

摘要： Fe O was supported on mesoporous Al O or SiO (50 wt.%) using an incipient wetness impregnation method, and Fe O /Al O exhibited higher catalytic efficiency for the degradation of 2,4-dichlorophenoxyacetic acid and -chlorobenzoic acid aqueous solution with ozone. The effect and morphology of supported Fe O on catalytic ozonation performance were investigated based on the characterization results of X-ray diffraction, X-ray photoelectron spectroscopy, BET analysis and Fourier transform infrared spectroscopy. The results indicated that the physical and chemical properties of the catalyst supports especially their Lewis acid sites had a significant influence on the catalytic activity. In comparison with SiO , more Lewis acid sites existed on the surface of Al O , resulting in higher catalytic ozonation activity. During the reaction process, no significant Fe ions release was observed. Moreover, Fe O /Al O exhibited stable structure and activity after successive cyclic experiments. The results indicated that the catalyst is a promising ozonation catalyst with magnetic separation in drinking water treatment.

关键词： heterogeneous catalytic ozonation iron oxides supports surface Lewis acid sites

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Structural engineering of transition metal-based nanostructured electrocatalysts for efficient water splitting

Yueqing Wang, Jintao Zhang

《化学科学与工程前沿（英文）》 2018年第12卷第4期页码 838-854 doi: 10.1007/s11705-018-1746-3

摘要： Water splitting is a highly promising approach for the generation of sustainable, clean hydrogen energy. Tremendous efforts have been devoted to exploring highly efficient and abundant metal oxide electrocatalysts for oxygen evolution and hydrogen evolution reactions to lower the energy consumption in water splitting. In this review, we summarize the recent advances on the development of metal oxide electrocatalysts with special emphasis on the structural engineering of nanostructures from particle size, composition, crystalline facet, hybrid structure as well as the conductive supports. The special strategies relay on the transformation from the metal organic framework and ion exchange reactions for the preparation of novel metal oxide nanostructures with boosting the catalytic activities are also discussed. The fascinating methods would pave the way for rational design of advanced electrocatalysts for efficient water splitting.

关键词： water splitting structure engineering metal organic framework ion exchange synergistic effect hybrid structure conductive supports

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海上风电支撑我国能源转型发展的思考

刘吉臻,马利飞,王庆华,房方,朱彦恺

《中国工程科学》 2021年第23卷第1期页码 149-159 doi: 10.15302/J-SSCAE-2021.01.021

摘要：

我国海上风电资源丰富，且靠近东部沿海经济发达省份，就地消纳优势巨大，发展海上风电有助于加快我国能源转型进程，助力2030 年碳达峰、2060 年碳中和目标的实现。本文在分析我国能源发展现状、趋势和面临挑战的基础上，指出发展海上风电是我国能源结构转型的重要战略支撑。从风电机组、海上输电、海洋工程和运维技术等四个领域归纳提炼了我国海上风电发展的关键技术。针对目前我国海上风电产业发展面临的诸多瓶颈问题，从海上风电资源勘查与评估、提高能源转型认识、宏观统筹与整体规划、科技创新、政策扶持机制等五方面提出了促进我国海上风电产业健康有序发展的对策与建议，以期为我国海上风电高质量发展和政府有关部门决策提供参考。

关键词：能源转型海上风电海上风电重点技术