使用金属（钌、钴或镍）助催化剂提高二氧化钛光催化水分解制氢性能。
Boosting photocatalytic water splitting of TiO using metal (Ru, Co, or Ni) co-catalysts for hydrogen generation.
作者信息
Thabet Safinaz M, Abdelhamid Hani Nasser, Ibrahim Said A, El-Bery Haitham M
机构信息
Department of Chemistry, Faculty of Science, Assiut University, Assiut, 71515, Egypt.
Egyptian Russian University, Badr City, 11829, Cairo, Egypt.
出版信息
Sci Rep. 2024 May 2;14(1):10115. doi: 10.1038/s41598-024-59608-0.
The photocatalytic activity of titanium dioxide (TiO) nanoparticles toward hydrogen generation can be significantly improved via the loading of various metals e.g., Ru, Co, Ni as co-catalysts. The metal co-catalysts are loaded into TiO nanoparticles via different deposition methods; incipient wet impregnation (Imp), hydrothermal (HT), or photocatalytic deposition (PCD). Among all of the tested materials, 0.1 wt% Ru-TiO (Imp) provided the highest initial hydrogen catalytic rate of 23.9 mmol h g, compared to 10.82 and 16.55 mmol h g for 0.3 wt% Ni-TiO (Imp) and 0.3 wt% Co-TiO (Imp), respectively. The loading procedures, co-catalyst metals type, and their loading play a significant role in elevating the photocatalytic activity of pristine TiO semiconductors toward hydrogen generation. Redox transition metals e.g., Co and Ni exhibit comparable photocatalytic performance to expensive elements such as Ru.
通过负载各种金属（如Ru、Co、Ni）作为助催化剂，二氧化钛（TiO₂）纳米颗粒对产氢的光催化活性可得到显著提高。金属助催化剂通过不同的沉积方法负载到TiO₂纳米颗粒中，即初湿浸渍法（Imp）、水热法（HT）或光催化沉积法（PCD）。在所有测试材料中，0.1 wt%的Ru-TiO₂（Imp）的初始产氢催化速率最高，为23.9 mmol h⁻¹ g⁻¹，相比之下，0.3 wt%的Ni-TiO₂（Imp）和0.3 wt%的Co-TiO₂（Imp）的初始产氢催化速率分别为10.82和16.55 mmol h⁻¹ g⁻¹。负载程序、助催化剂金属类型及其负载量对提高原始TiO₂半导体对产氢的光催化活性起着重要作用。氧化还原过渡金属（如Co和Ni）表现出与Ru等昂贵元素相当的光催化性能。
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