Preparation and Photocatalytic Properties of Ag2CO3 / Graphene Composite Photocatalyst

Huanling Chen, Huaying Xu, Wenzhong Dong


Silver-based photocatalytic semiconducting materials have drawn the attention of reseachers for their high visible photocatalytic activity. However, the silver-based photocatalytic semiconducting material exhibits light corrosion during the photocatalytic reaction, and the photocatalytic stability is poor. Therefore, improvingthe photocatalytic stability and inhibition of light corrosion of silver-based photocatalytic semiconductor materials have been the focus of attention. In this paper, according to the principle of photocatalysis and the principle of photo-corrosion, it is proposed to improve the photogenerated electrons and hole separation of photocatalytic semiconductor materials, to rapidly transfer photogenerated electrons, to inhibit photogenerated electrons and Ag + to prevent light corrosion, Stability of the catalyst. Ag2CO3 / GO composite photocatalytic materials were synthesized by precipitation method using polystyrene as photocatalyst. The characterization and photocatalytic performance tests showed that the graphene has a good auxiliary effect, which can promote the separation of photogenerated electrons and holes of Ag2CO3 and transfer the photogenerated electrons into O2 in H2O in time, thus suppressing the light of Ag2CO3 / GO photocatalytic materials Corrosion phenomenon, improve the photocatalytic performance. Ag2CO3 / GO-1.0 has the best catalytic activity for the catalytic activity and stability of Ag2CO3 / GO in the photocatalytic decomposition of methyl orange. Therefore, graphene as a photocatalytic auxiliaries can effectively improve the photocatalytic stability of silver-based photocatalytic materials and have some reference significance for improving the stability of other photocatalytic materials which are prone to light corrosion.

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Alexander A. Balandin, Suchismita Ghosh, Wenzhong Bao, et al. Superior Thermal Conductivity of Single-Layer Graphene. Nano Letters, 2008, 8 (3): 902,906

Huanling Chen, et al

R. R. Nair, P. Blake, A. N. Grigorenko, et al. Fine Structure Constant Defines Visual Transparency of Graphene. Science, 2008, 320 (5881): 1308

Carey J H, Lawrence J, Tosine H M. Photodegradation of PCBs in the presence of titanium dioxide in aqueous suspension [J]. Bulletin of Environmental Contamination and Toxicology, 1976, 16 (6): 697-701.

Ryu J., Lee S. H., Nam D. H., et al. Rational design and engineering of quantum-dot-sensitized TiO2 nanotube arrays for artificial photosynthesis [J]. Advanced Materials, 2011,23 (16): 1883-1888

Choi Y. J., Seeley Z., Bandyopadhyay A 'et al. Aluminum-doped TiO2 nano-oxide for gas sensors [J]. Sensors and Actuators B: Chemical, 2007,124 (1): 111-117

Li X, Zou X, Qu Z, et al. Photocatalytic degradation of gaseous toluene over Ag-doping TiO2 nanotube powder prepared by anodization coupled with impregnation method [J], Chemosphere, 2011, 83 (5): 674-679 The

Xiang Q J5 Yu JG, Cheng B, et al. Microwave-Hydrothermal Preparation and Visible-Light Photoactivity of Plasmonic Photocatalyst Ag-TiO2 Nanocomposite Hollow Spheres [J], Chemistry-an Asian Journal, 2010,5 (6) 1466-1474.

A. K. Geim, K. S. Novoselov. The rise of graphene. Nature Materials, 2007, 6: 183-191

Liu Shouxin, Liu Hong. Photocatalytic and photoelectric catalytic base and application [M]. Beijing: Chemical Industry Press, 2005.

Liu Longxue Min, Chu Sheng et al. Modifi cation and modifi cation of new nano-TiO2 photocatalyst [J]. Materials Review, 2009, 17: 103-106


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