Mao Liqun, Ba Qianqian, Liu Shuang, Jia Xinjia, Liu Heng, Chen Wei, Li Xiying
Henan Engineering Research Center of Resource & Energy Recovery from Waste, Henan University Kaifeng 475004 PR China
Institute of Functional Polymer Composites, Henan University Kaifeng 475004 PR China.
RSC Adv. 2018 Sep 10;8(55):31529-31537. doi: 10.1039/c8ra06581k. eCollection 2018 Sep 5.
Solar photocatalytic water splitting for the production of hydrogen has been a core aspect for decades. A highly active and durable photocatalyst is crucial for the success of the renewable hydrogen economy. To date, the development of highly effective photocatalysts has been seen by the contemporary research community as a grand challenge. Thus, herein we put forward a sincere attempt to use a Pt-Ni alloy nanoparticle (NP) cocatalyst loaded CdS photocatalyst ((Pt-Ni )/CdS) for photocatalytic hydrogen production under visible light. The Pt-Ni alloy NP cocatalyst was synthesized using a one-pot solvothermal method. The cocatalyst nanoparticles were deposited onto the surface of CdS, forming a Pt-Ni /CdS photocatalyst. Photocatalytic hydrogen production was carried out using a 300 W Xe light equipped with a 420 nm cut-off filter. The H evolution rate of the Pt-Ni/CdS photocatalyst can reach a value as high as 48.96 mmol h g catalyst, with a quantum efficiency of 44.0% at 420 nm. The experimental results indicate that this Pt-Ni/CdS photocatalyst is a prospective candidate for solar hydrogen generation from water-splitting.
几十年来，利用太阳能光催化分解水制氢一直是一个核心研究方向。一种高活性且耐用的光催化剂对于可再生氢经济的成功至关重要。迄今为止，当代研究界已将开发高效光催化剂视为一项重大挑战。因此，在此我们真诚地尝试使用负载有铂 - 镍合金纳米颗粒（NP）助催化剂的硫化镉（CdS）光催化剂（(Pt - Ni)/CdS）在可见光下进行光催化制氢。铂 - 镍合金NP助催化剂采用一锅法溶剂热法合成。助催化剂纳米颗粒沉积在CdS表面，形成Pt - Ni/CdS光催化剂。光催化制氢实验使用配备420 nm截止滤光片的300 W氙灯进行。Pt - Ni/CdS光催化剂的析氢速率可达48.96 mmol h g催化剂，在420 nm处量子效率为44.0%。实验结果表明，这种Pt - Ni/CdS光催化剂是通过水分解实现太阳能制氢的一种有前景的候选材料。
