诸葛福瑜,靳治良,吕功煊.B掺杂Cd0.5Zn0.5S光催化剂制氢性能研究[J].分子催化,2007,(3):233-238
B掺杂Cd0.5Zn0.5S光催化剂制氢性能研究
Photocatalytic Properties of B-doped Cd0.5Zn0.5S Photocatalyst for Hydrogen Generation
投稿时间:2006-06-19  修订日期:2006-07-15
DOI:
中文关键词:  Cd0.5Zn0.5S,B掺杂,光催化,制氢
英文关键词:Cd0.5Zn0.5S,B-doping,Photocatalysis,Hydrogen production
基金项目:国家重点基础研究发展计划(973计划)
诸葛福瑜  靳治良  吕功煊
中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室 甘肃兰州730000,中国科学院研究生院,北京100039,甘肃兰州730000,甘肃兰州730000
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中文摘要:
      采用浸渍法制备了B掺杂的Cd0.5Zn0.5S光催化剂,考察了不同B掺杂量的Cd0.5Zn0.5S催化剂在可见光光照下的放氢活性和稳定性.实验结果表明,B掺杂可以显著提高催化剂的活性和稳定性.B的掺杂量对催化剂的活性有显著影响,最佳担载量为2%.在利用XRD、PL、XPS、UV-V is等手段对催化剂表征的基础上,结合光催化性能测定结果与催化剂表征结果,初步探讨了B掺杂对Cd0.5Zn0.5S光催化剂性能的影响机制.结果表明,B掺杂显著地增强了B/Cd0.5Zn0.5S催化剂的紫外-可见漫反射和荧光光谱强度.XPS结果表明,催化剂中的B物种不是以简单氧化物的形式存在,而可能是通过某种化学反应与Cd0.5Zn0.5S光催化剂作用,使催化剂的性能得以改善.
英文摘要:
      In this paper, a novel photocatalyst, B/Cd0.5Zn0.5S, was prepared by impregnation ot H3BO3 coupleo with catalyst Cd0.5Zn0.5S. Photocatalytic activity and stability for hydrogen production of B/Cd0.5Zn0.5S under visible light irradiation have been studied. It was found that Cd0.5Zn0.5S catalyst doped with 2% boron showed a maximum rate of hydrogen evolution. The activity of hydrogen evolution from aqueous sodium sulfite solution under visible light irradiation and long-term stability were improved. The catalysts were characterized using XRD, XPS PL, UV-Vis techniques and the possible reaction mechanism was discussed. The diffuse reflectance and photolumihence spectral intensity of the B-doped Cd0.5Zn0.5S were enhanced greatly. B species did not exist in the form of oxide in the catalyst. There was interaction between B and Cd0.5Zn0.5S catalyst, which improved photocatalytic properties.
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