School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P.R. China.
Dalton Trans. 2019 Mar 19;48(12):4015-4025. doi: 10.1039/c9dt00586b.
The development of a highly active and stable non-noble-metal hydrogen-producing catalyst for renewable energy reserves and conversion remains a serious challenge. In this work, we described a novel binary solution (DETA/H2O) reaction for preparing a composite catalyst composed of CdS nanoparticles grown on CoSe2 nanobelts. The composite catalyst (CoSe2/CdSDETA) exhibits excellent catalytic activity for a hydrogen evolution reaction in an EY sensitized 15% (v/v) TEOA aqueous solution under visible light irradiation (λ ≥ 420 nm). Moreover, the catalytic activity of the P-doped sample (CoSe2/CdSDETA|P) was further improved. The excellent performance is ascribed to the synergy among DETA and atomic-level P-doping. Some essential characterization methods such as XRD, SEM, TEM, UV-vis diffuse spectroscopy, XPS, photoelectrochemistry, PL, etc. were carried out to support the related results and a possible reaction mechanism was put forward.
开发用于可再生能源储备和转化的高效稳定的非贵金属制氢催化剂仍然是一个严峻的挑战。在这项工作中，我们描述了一种新颖的二元溶液（DETA/H2O）反应，用于制备由 CdS 纳米粒子在 CoSe2 纳米带上生长而成的复合催化剂。在可见光照射下（λ≥420nm），该复合催化剂（CoSe2/CdSDETA）在 EY 敏化的 15%（v/v）TEOA 水溶液中对析氢反应表现出优异的催化活性。此外，P 掺杂样品（CoSe2/CdSDETA|P）的催化活性进一步提高。优异的性能归因于 DETA 和原子级 P 掺杂之间的协同作用。进行了一些必要的表征方法，如 XRD、SEM、TEM、UV-vis 漫反射光谱、XPS、光电化学、PL 等，以支持相关结果，并提出了一种可能的反应机制。
