Li Weili, Geng Hongchao, Yao Lu, Cao Kesheng, Sheng Pengtao, Cai Qingyun
College of Chemistry and Environmental Engineering, Pingdingshan University, Pingdingshan 467000, China.
State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China.
Nanomaterials (Basel). 2019 Mar 8;9(3):393. doi: 10.3390/nano9030393.
Here we present the photoelectrocatalytic hydrogen generation properties of CdS passivated ZnCuInSe (ZCISe) quantum dots (QDs) supported by TiO₂ nanowires decorated with Ag nanoparticles. In this configuration, Ag nanoparticles were sandwiched between the photo-electrons collector (TiO₂) and photo-sensitizers (ZCISe), and acted as an electron relay speeding up the charge carrier transport. ZCISe and CdS enabled the optical absorption of the photoelectrode ranging from ultraviolet to near infrared region, which significantly enhanced the solar-to-chemical energy conversion efficiency. A photocurrent of 10.5 mA/cm² and a hydrogen production rate of about 52.9 μmol/h were achieved under simulated sunlight (1.5 AG).
在此，我们展示了由装饰有银纳米颗粒的二氧化钛纳米线支撑的硫化镉钝化的锌铜铟硒（ZCISe）量子点（QDs）的光电催化产氢特性。在这种结构中，银纳米颗粒夹在光电子收集器（二氧化钛）和光敏剂（ZCISe）之间，并作为电子中继器加速电荷载流子的传输。ZCISe和硫化镉使光电极的光吸收范围从紫外区域扩展到近红外区域，这显著提高了太阳能到化学能的转换效率。在模拟太阳光（1.5 AG）下实现了10.5 mA/cm²的光电流和约52.9 μmol/h的产氢速率。
