The enhanced photocatalytic hydrogen production of nickel-cobalt bimetals sulfide synergistic modified CdS nanorods with active facets
The enhanced photocatalytic hydrogen production of nickel-cobalt bimetals sulfide synergistic modified CdS nanorods with active facets
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具有活性面的镍钴双金属硫化物协同改性CdS纳米棒的增强光催化产氢
DOI：
10.1016/j.renene.2020.04.053
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发表时间：
2020-08
期刊：
影响因子：
8.7
通讯作者：
Li Chaorong
中科院分区：
文献类型：
--
作者：
Pan Jiaqi;Li Hongli;Li Shi;Ou Wei;Liu Yanyan;Wang Jingjing;Song Changsheng;Zheng Yingying;Li Chaorong
采用简单的连续水热法制备了具有活性晶面的镍钴双金属硫化物协同修饰的CdS纳米棒，在此基础上，通过水热法初步制备了CdS纳米棒，并在CdS纳米棒表面沉积了Ni-Co-S纳米粒子。通过光催化产氢性能评价，CdS/Ni-Co-S的光催化性能（约6.56 mmol/g·h）比典型CdS提高了约240倍。其主要原因是活性小面能促进光生电子在表面聚集，提高HER活性，类Pt行为的Ni-Co-S能促进光生电子向水中的转移/扩散，CdS纳米棒和Ni-Co-S纳米颗粒的小尺寸能提供足够的HER活性位点，缩短转移路径，这可以通过电化学测量来支持。
Nickel-cobalt bimetals sulfide synergistic modified CdS nanorods with active facets are fabricated by a simple continuously hydrothermal method, there, CdS nanorods are preliminarily fabricated by the hydrothermal method, and then Ni–Co–S nanoparticles are deposited on the surface of CdS nanorods. Evaluated by the photocatalytic hydrogen production, the photocatalytic performance of CdS/Ni–Co–S (∼6.56 mmol/g∙h) exhibits an obvious enhancement of about ∼240 folds than typical CdS. The main reasons for the HER enhancement are ascribed to that, the active facets can promote the photo-generated electron aggregating at surface to increase the HER activities, Pt-like behavior Ni–Co–S can promote the photo-generated electrons transferring/diffusing into the water, the small size of CdS nanorods and Ni–Co–S nanoparticles can provide sufficient HER active sites and shorten the transferring route, which can be supported by the electrochemical measurements.
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