超灵敏的无电极和无助催化剂检测纳米摩尔/小时析氢，用于发现新的光催化剂
Ultrasensitive electrode-free and co-catalyst-free detection of nanomoles per hour hydrogen evolution for the discovery of new photocatalysts
摘要：
高通量的理论方法越来越多地用于确定有前途的光催化材料，用于从水制氢作为清洁能源。虽然最有前途的水裂解候选者需要助催化剂负载和电偏压，计算成本预测他们的先验变得很大。因此，重要的是识别具有小的初始氢产生速率（通常在每小时数十纳摩尔的范围内）的裸露的无偏压半导体光催化剂，因为这些光催化剂可以通过进一步的助催化剂负载和偏压而变得高效。本文报道了一种适用于筛选新型光催化剂的灵敏氢检测系统。测得负载0.3%wt Pt的金红石型TiO_2的析氢速率为78.0 ± 0.8 μmol/h/0.04g，与文献报道的速率相当。相比之下，对于没有电偏压的裸多晶TiO 2，证明了对11.4 ± 0.3nmol/h/0.04g的超低释放速率的敏感性。ZnFe_2 O_4（18.1 ± 0.2nmol/h/0.04g）和Ca_2 Pb_2 O_4（35.6 ± 0.5nmol/h/0.04g）在无电偏压或无助催化剂负载的情况下表现出潜在的优于裸TiO_2的光催化性能。这项工作扩展了可用于光催化过程的灵敏检测的技术，以更快地筛选新的候选光催化材料
英文摘要：
High throughput theoretical methods are increasingly used to identify promising photocatalytic materials for hydrogen generation from water as a clean source of energy. While most promising water splitting candidates require co-catalyst loading and electrical biasing, computational costs to predict them apriori becomes large. It is therefore important to identify bare, bias-free semiconductor photocatalysts with small initial hydrogen production rates, often in the range of tens of nano-mols per hour, as these can become highly efficient with further co-catalyst loading and biasing. Here we report a sensitive hydrogen detection system suitable for screening new photocatalysts. The hydrogen evolution rate of the prototypical rutile TiO2 loaded with 0.3 % wt Pt is detected to be 78.0+-0.8 μmol/h/0.04g, comparable with the rates reported in the literature. In contrast, sensitivity to an ultralow evolution rate of 11.4+-0.3 nmol/h/0.04g is demonstrated for bare polycrystalline TiO2 without electrical bias. Two candidate photocatalysts, ZnFe2O4 (18.1+-0.2 nmol/h/0.04g) and Ca2PbO4 (35.6+-0.5 nmol/h/0.04g), without electrical bias or co-catalyst loading, are demonstrated to be potentially superior to bare TiO2. This work expands the techniques available for sensitive detection of photocatalytic processes towards much faster screening of new candidate photocatalytic materials in their bare state
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
