Liu Lin, Wu Yan, Song Ru, Zhang Yu, Ma Yafei, Wan Jun, Zhang Meili, Cui Huali, Yang Hua, Chen Xiaoli, Wang Jijiang
College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an Key Laboratory of New Energy & New Functional Materials, Yan'an 716000, PR China.
College of Chemistry & Chemical Engineering, Yan'an University, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an Key Laboratory of New Energy & New Functional Materials, Yan'an 716000, PR China.
J Colloid Interface Sci. 2022 Dec 15;628(Pt B):701-711. doi: 10.1016/j.jcis.2022.08.109. Epub 2022 Aug 19.
The construction of excellent photocatalysts for splitting water into hydrogen is highly desirable to realize carbon neutralization. In this work, an innovative and well-designed S-scheme photocatalyst composed of ultrathin ZnInS (ZIS) nanosheets uniformly anchored on the surface of organic semiconductor PDIIM is successfully fabricated. Within the heterojunction, perylene diimide with an imidazole group (PDIIM) is strategically applied as a structure template, which plays a crucial role in optimizing the morphology, increasing the active sites of sulfur vacancies, providing the additional photothermal effect, and promoting photogenerated charge separation of the catalyst. The photocatalytic H generation rate of the ZIS/PDIIM heterojunction with an optimized mass ratio reaches up to 13.04 mmol/g/h, which is 2.64 times and 14.02 times higher than that of pristine ZIS and PDIIM, respectively. The outstanding photocatalytic activity is attributed to the synergistic effect of the above advantages. Importantly, the photothermal effect induced by PDIIM belonging to the perylene diimide-based derivative was discovered to accelerate photocatalytic H generation for the first time. This work provides valuable insight into the utilization of perylene diimide-based derivatives in the construction of multi-effect enhancement photocatalysts and their application in photothermal-assisted photocatalytic hydrogen evolution.
构建用于将水分解为氢气的优异光催化剂对于实现碳中和极为必要。在这项工作中，一种创新且设计良好的由均匀锚定在有机半导体PDIIM表面的超薄ZnInS（ZIS）纳米片组成的S型光催化剂被成功制备。在异质结中，带有咪唑基团的苝二酰亚胺（PDIIM）被策略性地用作结构模板，它在优化形貌、增加硫空位活性位点、提供额外光热效应以及促进催化剂光生电荷分离方面起着关键作用。具有优化质量比的ZIS/PDIIM异质结的光催化产氢速率高达13.04 mmol/g/h，分别比原始ZIS和PDIIM高2.64倍和14.02倍。出色的光催化活性归因于上述优势的协同效应。重要的是，首次发现属于苝二酰亚胺基衍生物的PDIIM诱导的光热效应加速了光催化产氢。这项工作为苝二酰亚胺基衍生物在构建多效应增强光催化剂及其在光热辅助光催化析氢中的应用提供了有价值的见解。
