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Abstract：
The photocatalytic activity of titanium dioxide (TiO2) 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 TiO2 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-TiO2 (Imp) provided the highest initial hydrogen catalytic rate of 23.9 mmol h-1 g-1, compared to 10.82 and 16.55 mmol h-1 g-1 for 0.3 wt% Ni-TiO2 (Imp) and 0.3 wt% Co-TiO2 (Imp), respectively. The loading procedures, co-catalyst metals type, and their loading play a significant role in elevating the photocatalytic activity of pristine TiO2 semiconductors toward hydrogen generation. Redox transition metals e.g., Co and Ni exhibit comparable photocatalytic performance to expensive elements such as Ru.
摘要：
二氧化钛（TiO2）纳米颗粒对氢气产生的光催化活性可以通过负载各种金属得到显著提高，例如，Ru,Co,Ni作为助催化剂。金属助催化剂通过不同的沉积方法加载到TiO2纳米颗粒中；初始湿浸渍(Imp)，热液（HT），或光催化沉积(PCD)。在所有测试的材料中，0.1wt％的Ru-TiO2（Imp）提供了23.9mmolh-1g-1的最高初始氢催化速率，而0.3wt％的Ni-TiO2（Imp）和0.3wt％的Co-TiO2（Imp）则为10.82和16.55mmolh-1g-1，分别。装载程序，助催化剂金属类型，它们的负载在提高原始TiO2半导体对氢产生的光催化活性方面起着重要作用。氧化还原过渡金属，例如，Co和Ni表现出与诸如Ru的昂贵元素相当的光催化性能。
