无定型钼硫化物/还原氧化石墨烯的辐射合成及其电催化析氢性能

引用本文: 曹朋飞, 胡杨, 张有为, 彭静, 翟茂林. 无定型钼硫化物/还原氧化石墨烯的辐射合成及其电催化析氢性能[J]. 物理化学学报, 2017, 33(12): 2542-2549. doi: 10.3866/PKU.WHXB201706151 shu

Citation: CAO Pengfei, HU Yang, ZHANG Youwei, PENG Jing, ZHAI Maolin. Radiation Induced Synthesis of Amorphous Molybdenum Sulfide/Reduced Graphene Oxide Nanocomposites for Efficient Hydrogen Evolution Reaction[J]. Acta Physico-Chimica Sinica, 2017, 33(12): 2542-2549. doi: 10.3866/PKU.WHXB201706151 shu

无定型钼硫化物/还原氧化石墨烯的辐射合成及其电催化析氢性能

曹朋飞 ^1, ,
胡杨 ^1, ,
张有为 ^2, ,
彭静 ^1, ,
翟茂林 ^1,

1.
北京大学化学与分子工程学院, 放射化学与辐射化学重点学科实验室, 北京分子科学国家实验室, 北京 100871;
2.
北京航空材料研究院, 隐身材料科技重点实验室, 北京 100095
基金项目:
国家自然科学基金（11405168，11505011）资助项目

摘要: 钼硫化物被认为是一种高效的电催化析氢反应的催化剂，因此其合成方法受到了广泛的研究和关注。本文以四硫代钼酸铵和氧化石墨为前驱体，利用γ射线对其辐照还原，一步法制备了钼硫化物/还原氧化石墨烯（MoS_x/RGO）复合材料。通过X射线光电子能谱、X射线衍射、透射电子显微镜、Raman光谱等表征手段确认复合材料中的MoS_x为无定型结构，且氧化石墨烯得到了有效的还原。同时系统研究了吸收剂量、前驱体配比对复合材料作为析氢反应催化剂性能的影响。结果发现，MoS_x/RGO复合材料具有优异的催化性能，其催化起始电压为110 mV，在电流密度为10 mA·cm^-2时过电势仅为160 mV，Tafel斜率为46 mV·dec^-1，说明该催化剂催化析氢机理为Volmer-Heyrovesy机理。此外，MoS_x/RGO复合材料还具有良好的催化稳定性。

关键词:

English

Radiation Induced Synthesis of Amorphous Molybdenum Sulfide/Reduced Graphene Oxide Nanocomposites for Efficient Hydrogen Evolution Reaction

1.
Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China;
2.
Aviation Key Laboratory of Science and Technology on Stealth Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, P. R. China
Received Date: 03 May 2017
Revised Date: 12 June 2017
Fund Project:
The project was supported by the National Natural Science Foundation of China (11405168, 11505011).

Abstract: Molybdenum sulfide is an efficient catalyst for the hydrogen evolution reaction (HER) and its synthesis has attracted significant attention in recent years. In this work, molybdenum sulfide/reduced graphite oxide (MoS_x/RGO) was prepared by the γ-ray induced reduction of ammonium tetrathiomolybdate and graphite oxide. The composition, morphology, and structure of the MoS_x/RGO composites were determined by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and Raman spectroscopy. The results confirmed the formation of amorphous MoS_x/RGO composites. Subsequently, the effects of the absorbed dose and precursor ratio on the performance of the composite material as the catalyst for HER were studied systematically. The resultant MoS_x/RGO composites were found to show excellent catalytic activity towards HER. With a catalyst loading of 0.275 mg·cm^-2, an onset overpotential of 110 mV, a Tafel slope of 46 mV·dec^-1, and a current density of 10 mA·cm^-2 at the overpotential of 160 mV can be achieved. These results can be considered as the proof of Volmer-Heyrovesy mechanism. In addition, the MoS_x/RGO catalyst also showed an excellent long-time stability during the evaluation for HER.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

无定型钼硫化物/还原氧化石墨烯的辐射合成及其电催化析氢性能

English

Radiation Induced Synthesis of Amorphous Molybdenum Sulfide/Reduced Graphene Oxide Nanocomposites for Efficient Hydrogen Evolution Reaction

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

无定型钼硫化物/还原氧化石墨烯的辐射合成及其电催化析氢性能

English

Radiation Induced Synthesis of Amorphous Molybdenum Sulfide/Reduced Graphene Oxide Nanocomposites for Efficient Hydrogen Evolution Reaction

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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