催化学报

催化学报 ›› 2013, Vol. 34 ›› Issue (10): 1926-1935.DOI: 10.1016/S1872-2067(12)60675-5

• 研究论文 • 上一篇    下一篇

沉淀煅烧法合成(CuAg)0.15In0.3Zn1.4S2光催化剂及可见光下的制氢性能

张广山a,b, 张文c, John C. Crittnnb,d, 陈勇生b, Disuk Minkte, 王鹏a   

  1. a 哈尔滨工业大学市政环境工程学院, 城市水资源与水环境国家重点实验室, 黑龙江哈尔滨150090;
    b 佐治亚理工学院土木与环境工程学院, 美国亚特兰大30332;
    c 新泽西理工学院土木与环境工程系, 美国纽瓦克07102;
    d 佐治亚理工学院布鲁克贝尔可持续性发展学院, 美国亚特兰大30332;
    e 密歇根理工大学土木与环境工程系, 美国霍顿49931
  • 收稿日期:2013-05-29 修回日期:2013-08-08 出版日期:2013-09-29 发布日期:2013-09-29
  • 基金资助:

    美国佐治亚理工学院布鲁克贝尔可持续性发展学院,Hightower Chair和Georgia Research Alliance;国家自然科学基金委员会创新研究群体科学基金(51121062).

Photocatalytic hydrogen production under visible-light irradiation on (CuAg)0.15In0.3Zn1.4S2 synthesized by precipitation and calcination

Guangshan Zhanga,b, Wen Zhangc, John C. Crittendenb,d, Yongsheng Chenb, Daisuke Minakatae, Peng Wanga   

  1. a State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China;
    b School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta 30332, Georgia, United States;
    c Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark 07102, New Jersey, United States;
    d Brook Byers Institute for Sustainable Systems, Georgia Institute of Technology, Atlanta 30332, Georgia, United States;
    e Department of Civil and Environmental Engineering, Michigan Technological University, Houghton 49931, MI, United States
  • Received:2013-05-29 Revised:2013-08-08 Online:2013-09-29 Published:2013-09-29
  • Contact: Peng Wang
  • Supported by:

    This work was supported by the Brook Byers Institute for Sustainable Systems, Hightower Chair, and the Georgia Research Alliance at the Georgia Institute of Technology, and Science Fund for Creative Research Groups of the National Natural Science Foundation of China (51121062).

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摘要：

研究了沉淀煅烧法制备的纳米级(CuAg)0.15In0.3Zn1.4S2光催化剂以及产氢效率,并采用X射线衍射、透射电镜、扫描电镜、N2吸附-脱附、紫外-可见吸收光谱等手段对催化剂进行了表征. 结果表明,(CuAg)0.15In0.3Zn1.4S2的结晶度、比表面积和吸收可见光能力与煅烧温度和煅烧时间有关. 在可见光下,以KI为电子给体,考察了不同条件对光催化产氢能力的影响. 发现在600℃煅烧5h时所制的(CuAg)0.15In0.3Zn1.4S2光催化剂产氢活性最高,产氢速率为1750 μmol g-1 h-1,量子效率在420±5nm达到12.8%,比未煅烧催化剂的光催化活性提高了约6倍.

关键词: 光催化剂, 多金属复合硫化物, 制氢, 煅烧, 光催化活性, 可见光

Abstract:

This study investigates the photocatalytic hydrogen production over nanosized (CuAg)0.15In0.3Zn1.4S2 photocatalysts prepared via precipitation and calcination. The photocatalysts were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, N2 adsorption-desorption, and UV-Vis absorption spectroscopy. The results show that calcination temperature and time significantly influence the crystallinity, specific surface area, and visible-light absorption capacity of the photocatalysts. The photocatalyst activity was studied under visible-light irradiation with KI as the electron donor. The results indicate that the (CuAg)0.15In0.3Zn1.4S2 photocatalyst prepared at a calcination temperature of 600 ℃ for 5 h yields the highest photocatalytic activity (H2 production rate of 1750 μmol g-1 h-1 and quantum yield of 12.8% at 420±5 nm), approximately 6 times larger than that of catalysts prepared without thermal treatment.

Key words: Photocatalyst, Multicomponent metal sufide, Hydrogen production, Calcination, Photocatalytic activity, Visible light