Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, and Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China.
Nanotechnology. 2013 Dec 20;24(50):505401. doi: 10.1088/0957-4484/24/50/505401. Epub 2013 Nov 27.
Hydrogen production through water splitting using photocatalysts with solar energy can produce clean fuel from renewable resources. In this study, CdS nanoparticle sensitized attapulgite (ATP) nanocomposites were successfully prepared by a facile approach. Under visible-light irradiation, the as-prepared photocatalysts were used for photocatalytic water splitting for hydrogen evolution from aqueous solutions containing Na2SO3 and Na2S as sacrificial reagents even without the noble metals. Photocatalytic hydrogen production activity is ascribed to the presence of CdS nanocrystals that alter the energy levels of the conduction band and valence band in the coupled semiconductor system. Furthermore, the theoretical calculations show that the natural Fe doping (two ATP cells sharing one Fe atom) can promote the photocatalytic process.
通过光催化剂利用太阳能将水分解来生产氢气，可以从可再生资源中生产清洁燃料。在这项研究中，通过简便的方法成功制备了 CdS 纳米颗粒敏化凹凸棒石（ATP）纳米复合材料。在可见光照射下，所制备的光催化剂被用于光催化水分解，从含有 Na2SO3 和 Na2S 的水溶液中作为牺牲试剂产生氢气，甚至没有使用贵金属。光催化产氢活性归因于 CdS 纳米晶的存在，它改变了耦合半导体系统中导带和价带的能级。此外，理论计算表明，天然的 Fe 掺杂（两个 ATP 单元共用一个 Fe 原子）可以促进光催化过程。
