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A GO/CoMo3S13 chalcogel heterostructure with rich catalytic Mo–S–Co bridge sites for the hydrogen evolution reaction
Nanoscale ( IF 5.8 ) Pub Date : 2022-06-14 , DOI: 10.1039/d2nr01800d Thanh Duy Cam Ha 1 , Ha Huu Do 2 , Heehyeon Lee 3 , Nguyen Ngoc Ha 4 , Nguyen Thi Thu Ha 4 , Sang Hyun Ahn 2 , Youngtak Oh 3 , Soo Young Kim 5 , Myung-Gil Kim 1
Nanoscale ( IF 5.8 ) Pub Date : 2022-06-14 , DOI: 10.1039/d2nr01800d Thanh Duy Cam Ha 1 , Ha Huu Do 2 , Heehyeon Lee 3 , Nguyen Ngoc Ha 4 , Nguyen Thi Thu Ha 4 , Sang Hyun Ahn 2 , Youngtak Oh 3 , Soo Young Kim 5 , Myung-Gil Kim 1
Affiliation
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Molybdenum disulfide (MoS2)-based materials are extensively studied as promising hydrogen evolution reaction (HER) catalysts. In order to bring out the full potential of chalcogenide chemistry, precise control over the active sulfur sites and enhancement of electronic conductivity need to be achieved. This study develops a highly active HER catalyst with an optimized active site-controlled cobalt molybdenum sulfide (CoMo3S13) chalcogel/graphene oxide aerogel heterostructure. The highly active CoMo3S13 chalcogel catalyst was achieved by the synergetic catalytic sites of [Mo3S13]2− and the Mo–S–Co bridge. The optimized GO/CoMo3S13 chalcogel heterostructure catalyst exhibited high catalytic HER performance with an overvoltage of 130 mV, a current density of 10 mA cm−2, a small Tafel slope of 40.1 mV dec−1, and remarkable stability after 12 h of testing. This study presents a successful example of a synergistic heterostructure exploiting both the appealing electrical functionality of GO and catalytically active [Mo3S13]2− sites.
中文翻译：
用于析氢反应的具有丰富催化 Mo-S-Co 桥位的 GO/CoMo3S13 硫族凝胶异质结构
二硫化钼（MoS 2）基材料作为有前景的析氢反应（HER）催化剂被广泛研究。为了充分发挥硫属化物化学的潜力，需要实现对活性硫位点的精确控制和电子导电性的增强。本研究开发了一种具有优化的活性位点控制的钴钼硫化物 (CoMo 3 S 13 ) 碳凝胶/氧化石墨烯气凝胶异质结构的高活性 HER 催化剂。通过[Mo 3 S 13 ] 2-和Mo-S-Co 桥的协同催化位点实现了高活性CoMo 3 S 13硫族凝胶催化剂。优化的 GO/CoMo3 S 13硫族凝胶异质结构催化剂表现出高催化HER性能，过电压为130 mV，电流密度为10 mA cm -2，Tafel斜率为40.1 mV dec -1，并且在12小时测试后具有显着的稳定性。本研究展示了一个协同异质结构的成功例子，该结构利用了 GO 的吸引人的电功能和催化活性 [Mo 3 S 13 ] 2-位点。
更新日期：2022-06-14
中文翻译：
用于析氢反应的具有丰富催化 Mo-S-Co 桥位的 GO/CoMo3S13 硫族凝胶异质结构
二硫化钼（MoS 2）基材料作为有前景的析氢反应（HER）催化剂被广泛研究。为了充分发挥硫属化物化学的潜力，需要实现对活性硫位点的精确控制和电子导电性的增强。本研究开发了一种具有优化的活性位点控制的钴钼硫化物 (CoMo 3 S 13 ) 碳凝胶/氧化石墨烯气凝胶异质结构的高活性 HER 催化剂。通过[Mo 3 S 13 ] 2-和Mo-S-Co 桥的协同催化位点实现了高活性CoMo 3 S 13硫族凝胶催化剂。优化的 GO/CoMo3 S 13硫族凝胶异质结构催化剂表现出高催化HER性能，过电压为130 mV，电流密度为10 mA cm -2，Tafel斜率为40.1 mV dec -1，并且在12小时测试后具有显着的稳定性。本研究展示了一个协同异质结构的成功例子，该结构利用了 GO 的吸引人的电功能和催化活性 [Mo 3 S 13 ] 2-位点。
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