Department of Chemical Engineering, Tsinghua University

State Key laboratory of Chemical Engineering

Lu Group

2. Technician

Qianlong Zhou

2016-2019: College of Chemistry and Chemical Engineering, Qiqihar University (MA.Sc)

2012-2016: College of Materials Science and Engineering, Qiqihar University (Bachelor)

Email: zql08050622@163.com

Address: Room 670, Gongwu Building, Tsinghua University, Beijing 100084, China

Motto: No pay, no gain.


Project: Preparation and Photocatalytic Properties of Multi-mode Modified Ordered  Composite Material
 

1. Synthesis of 3DOM photocatalytic materials

The three-dimensionally ordered microporous (3DOM) materials with unique structural characteristics and wide application prospects have attracted much attention for applications in various fields such as chemistry, physics, material, information, and engineering. In addition, its large pore size and open inner surface make it possible to be an ideal structural model for photocatalytic degradation. [1-2]

2. Synthesis of 3DOH arrays

The three-dimensional ordered hollow sphere (3DOH) structure can improve the light-trapping ability of the composite material and effectively enhance the light absorption performance of the composite material. Meanwhile, it could enable the model molecules to react with active species more quickly, further utilizing photogenerated charge carriers, and effectively improving the photocatalytic activity of the composites. [3]

3. Photodegradation and Hydrogen evolution

After 8 h of xenon lamp irradiation, 2.0 ZnO QDs@Sn-TiO2 has the best photohydrogen production performance, and its hydrogen evolution amount reaches 1047 μmol·g−1. With the addition of co-catalyst Pt, the amount of hydrogen evolution reaches the maximum, which can reach 10,740 μmol·g−1, and is 10 times than that without the addition of co- catalyst Pt. [3]

4. Photocatalytic reaction mechanism

The 3DOM structure provides good channels for the transfer of active materials, and their unique structures enhance light absorption by limiting, adjusting, and manipulating photons, thereby producing a slow photon effect and increasing the photocatalytic activity of photocatalysts. [2]]

Publication:
  1. Zhou Q., et al. The Photocatalytic and Hydrogen Production of Pt-doped Three-dimensionally Ordered Macroporous Composite ZrO2 by Photoreduction Method. Journal of Molecular Catalysis (CHINA). 2017, 31(3) ,236-246.
  2. Zhou Q., et al. Three-dimensionally ordered macroporous Sn4+-doped TiO2 with anatase–rutile mixed phase via Pt loading by photoreduction method: enhanced photodegradation and hydrogen production performance. New Journal of Chemistry. 2018 ,42(18) ,15190-15199. 
  3. Zhou Q., et al. Synergistic effect of ZnO QDs and Sn4+ions to control anatase-rutile phase of three-dimensional ordered hollow sphere TiO2 with enhanced photodegradation and hydrogen evolution. Applied Surface Science. 2019 ,481 ,1185-1195.