Citation: CHEN Hui-Min, HE Yun-Qiu, LI Yi-Ming, CAI Si-Qi. Preparation and Photoelectric Properties of Reduced Graphite Oxide(rGO)/ZnO Composite Films[J]. Chinese Journal of Inorganic Chemistry, ;2015, (3): 429-438. doi: 10.11862/CJIC.2015.101 shu

Preparation and Photoelectric Properties of Reduced Graphite Oxide(rGO)/ZnO Composite Films

CHEN Hui-Min ¹ ,
HE Yun-Qiu ^1,2,, ,
LI Yi-Ming ¹ ,
CAI Si-Qi ¹

1.
1 School of Materials Science and Engineering, Tongji University, Shanghai 200092, China;
2.
2 Key Laboratory of Advanced Civil Engineering Materials, Ministry of Education, Tongji University, Shanghai 200092, China

Corresponding author: HE Yun-Qiu,
Received Date: 9 December 2014
Available Online: 18 January 2015
Fund Project: 国家自然科学基金(No.51175162)资助项目。 (No.51175162)

The rGO/ZnO (reduced graphite oxide/ZnO) composite films were synthesized by using different reduction treated graphite oxides (GOs) as precursors, and then their visible-light excitation photoelectric conversion performance was investigated. In this work, we used the two reducing agents, KOH or NaBH₄, to reduce graphite oxide, then the reduced graphite oxide was mixed with zinc oxide sol. rGO/ZnO composite films were prepared by spin-coating and heat treatment on FTO(fluorine-doped tin oxide)conductive glass substrates. The as-prepared samples were characterized by XRD, FTIR, FE-SEM, XPS, UV-Vis, etc. Pretreatment process of graphite oxide had a great influence on the structure of composite films, reduction treatment by NaBH₄ was more conducive to form a uniform thin film. Photocurrent test results showed that different composite films can produce photocurrent under visible-light irradiation, the principle was photo-excited electron transition from rGO to ZnO to achieve the separation of photo-generated carriers. The GO after NaBH₄-reduction with ZnO composite film showed the largest photocurrent density with a value of 6×10^-7 A·cm^-2.
- graphite oxide;zinc oxide;sol-gel;films;photoelectric property
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