题目：

Carbon Dots Enhance the Stability of CdS for Visible-Light-Driven Overall Water Splitting

作者：

Cheng Zhu, Changan Liu, Yunjie Zhou, Yijun Fu, Sijie Guo, Hao Li, Siqi Zhao, Hui Huang∗, Yang Liu∗, Zhenhui Kang∗

单位：

Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University,199 Ren’ai Road, Suzhou, 215123, Jiangsu, PR China

摘要：

Cadmium sulfide (CdS) has long time been one of the most promising inorganic photocatalysts for hydro-gen production driven by visible light. However, the photocorrosion of CdS is the most serious problem which constrains its development. Here, we report the design and fabrication of a carbon dots-cadmium sulfide (CDs-CdS) nanocomposite, showing significant photocatalytic water splitting properties with impressive stability without requirement for any sacrificial agents or cocatalysts. The highest hydro-gen production rate was obtained for about 2.55 mmol h⁻¹, with an oxygen evolution rate for about 0.52 mmol h⁻¹, when the concentration of CDs in the sample is 0.03 g_CDs/g_catalyst. Even the produced H₂and O₂ are not equal to the stoichiometric ratio of 2:1 (H₂:O₂), the CDs-CdS nanocomposite shows greater stability (8-time repetitive catalytic experiments) than the CdS catalysts reported up to now (without sacrificial agents or cocatalysts). It is also inspiring that when we increased the concentration of CDs in the catalysts, the produced H₂ and O₂ were gradually adjusted to meet the stoichiometric ratio of 2:1 in spite of low hydrogen production rate (0.13 mmol h⁻¹).

影响因子：

9.446

分区情况：

一区

链接：

http://www.sciencedirect.com/science/article/pii/S092633731730468X#fig0010