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Anchoring Zn0.5Cd0.5S solid solution onto 2D porous Co–CoO nanosheets for highly improved photocatalytic H2 generation
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2021-08-11 , DOI: 10.1039/d1qm00669j Xueyou Gao 1 , Deqian Zeng 1 , Qingru Zeng 1 , Zongzhuo Xie 1 , Toyohisa Fujita 1 , Xinpeng Wang 1 , Gang He 1 , Yuezhou Wei 1
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2021-08-11 , DOI: 10.1039/d1qm00669j Xueyou Gao 1 , Deqian Zeng 1 , Qingru Zeng 1 , Zongzhuo Xie 1 , Toyohisa Fujita 1 , Xinpeng Wang 1 , Gang He 1 , Yuezhou Wei 1
Affiliation
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Co-Based cocatalysts have attracted considerable attention as potential alternatives for the noble metal (Pt) in photocatalytic water splitting. However, the two-dimensional (2D) porous-structured Co-based cocatalysts toward photocatalytic hydrogen (H2) production application are rarely reported. In this study, 2D porous Co–CoO (CC) nanosheets prepared by a facile annealing approach were employed as a support to anchor Zn0.5Cd0.5S (ZCS) solid solution toward visible-light-induced photocatalytic H2 production. The optimized 5CC/ZCS composite exhibits a high H2 generation rate of 8152 μmol h−1 g−1, which is approximately 46- and 10-fold that of pristine ZCS and 3% Pt/ZCS, respectively. Moreover, the Co–CoO/Zn0.5Cd0.5S (CC/ZCS) also processes long-term activity and superior stability during the photocatalytic H2-evolution reactions. The significant improvement in the photocatalytic water splitting of CC/ZCS is mainly derived from the intimate interface between CC nanosheets and ZCS nanoparticles. The 2D porous CC nanosheets serve as an efficient cocatalyst to promote photogenerated charge carrier separation, reduce reaction overpotential, and provide abundant reaction sites. This work paves a promising way to construct hybrid nanostructures based on porous Co-based nanosheets and metal sulfides for enhanced photo/electro-catalysis.
中文翻译：
将 Zn0.5Cd0.5S 固溶体锚定在二维多孔 Co-CoO 纳米片上以高度改进光催化制氢
钴基助催化剂作为贵金属（Pt）在光催化水分解中的潜在替代品引起了相当大的关注。然而，用于光催化制氢（H 2）应用的二维（2D）多孔结构钴基助催化剂鲜有报道。在这项研究中，采用通过简单退火方法制备的二维多孔 Co-CoO (CC) 纳米片作为支撑物，将 Zn 0.5 Cd 0.5 S (ZCS) 固溶体固定在可见光诱导的光催化 H 2生产中。优化后的 5CC/ZCS 复合材料具有8152 μmol h -1 g -1的高 H 2生成率，分别是原始 ZCS 和 3% Pt/ZCS 的约 46 倍和 10 倍。此外，联合的CoO /锌0.5镉0.5 S（CC / ZCS）还处理期间光催化ħ长期活性和优良的稳定性2个-evolution反应。CC/ZCS 光催化水分解的显着改进主要源于 CC 纳米片和 ZCS 纳米粒子之间的紧密界面。二维多孔 CC 纳米片作为有效的助催化剂促进光生载流子分离，降低反应过电位，并提供丰富的反应位点。这项工作为构建基于多孔 Co 基纳米片和金属硫化物的混合纳米结构以增强光/电催化作用铺平了道路。
更新日期：2021-08-27
中文翻译：
将 Zn0.5Cd0.5S 固溶体锚定在二维多孔 Co-CoO 纳米片上以高度改进光催化制氢
钴基助催化剂作为贵金属（Pt）在光催化水分解中的潜在替代品引起了相当大的关注。然而，用于光催化制氢（H 2）应用的二维（2D）多孔结构钴基助催化剂鲜有报道。在这项研究中，采用通过简单退火方法制备的二维多孔 Co-CoO (CC) 纳米片作为支撑物，将 Zn 0.5 Cd 0.5 S (ZCS) 固溶体固定在可见光诱导的光催化 H 2生产中。优化后的 5CC/ZCS 复合材料具有8152 μmol h -1 g -1的高 H 2生成率，分别是原始 ZCS 和 3% Pt/ZCS 的约 46 倍和 10 倍。此外，联合的CoO /锌0.5镉0.5 S（CC / ZCS）还处理期间光催化ħ长期活性和优良的稳定性2个-evolution反应。CC/ZCS 光催化水分解的显着改进主要源于 CC 纳米片和 ZCS 纳米粒子之间的紧密界面。二维多孔 CC 纳米片作为有效的助催化剂促进光生载流子分离，降低反应过电位，并提供丰富的反应位点。这项工作为构建基于多孔 Co 基纳米片和金属硫化物的混合纳米结构以增强光/电催化作用铺平了道路。
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