ZIF-8-derived carbon-thin-layer protected WC/W24O68 micro-sized rods with enriched oxygen vacancies as efficient Pt co-catalysts for methanol oxidation and oxygen reduction
ZIF-8-derived carbon-thin-layer protected WC/W24O68 micro-sized rods with enriched oxygen vacancies as efficient Pt co-catalysts for methanol oxidation and oxygen reduction
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ZIF-8衍生的具有富氧空位的碳薄层保护WC/W24O68微米棒作为甲醇氧化和氧还原的高效Pt助催化剂
DOI:
10.1016/j.apcatb.2019.118574
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发表时间:
2020-05
期刊:
影响因子:
--
通讯作者:
Zou Jinlong
中科院分区:
文献类型:
--
作者:
Li Jiahuan;You Shijie;Liu Mingyang;Zhang Peng;Dai Ying;Yu Yang;Ren Nanqi;Zou Jinlong
To make methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR) more efficient, it is essential to explore Pt support (low Pt-loading) with desirable co-catalytic activity. Herein, tungsten carbide/tungsten oxide/zeolitic imidazolate framework-8 (ZIF-8)-derived carbon ((WC)/W24O68/NCZ8) composites are prepared as Pt-supports/co-catalysts. Heating temperature is controlled to adjust structure and crystalline phases of (WC)/W24O68/NCZ8. For MOR, mass activity (2492.2 mA mg−1Pt) of Pt-WC/W24O68/NCZ8(850 °C, 5.0 wt.%) is much superior to commercial Pt/C (499.2 mA mg−1Pt, 10.0 wt.%). NCZ8-thin-layer facilitates carburization of W atoms (W24O68to WC) to form WC/W24O68heterojunctions. Oxygen vacancies on W24O68fascinate H+to encourage formation of tungsten bronze compounds (HyWO3, (0 < y < 1)), and reversible reaction between W24O68and Hy(WO)3(0 < y < 1) contributes to a high MOR activity and CO resistance. Pt-WC/W24O68/NCZ8(850 °C) also exhibits a higher ORR activity (4e-) than Pt/C in acidic media. WC/W24O68heterojunctions accelerate mass and charge transfer at the mixed crystal interfaces for ORR.
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DOI:
10.1016/j.apcatb.2019.118043
发表时间:
2019-12
期刊:
Applied Catalysis B: Environmental
影响因子:
--
作者:
Yu Yang;You Shijie;Du Jiannan;Xing Zipeng;Dai Ying;Chen Hun;Cai Zhuang;Ren Nanqi;Zou Jinlong
通讯作者:
Zou Jinlong
影响因子:
6.7
作者:
Qin Congli;Fan Aixin;Zhang Xin;Dai Xiaoping;Sun Hui;Ren Danhua;Dong Zhun;Wang Yao;Luan Chenglong;Ye Jin Yu;Sun Shi Gang
通讯作者:
Sun Shi Gang
影响因子:
6.7
作者:
Zhaoyi Yang;Ming Chen;Min Xia;Meng Wang;Xindong Wang
通讯作者:
Xindong Wang
影响因子:
10.9
作者:
Tao, Guiju;Zhang, Lingxia;Shi, Jianlin
通讯作者:
Shi, Jianlin
影响因子:
--
作者:
Lirui Nan;W. Yue;Yang Jiang
通讯作者:
Lirui Nan;W. Yue;Yang Jiang