Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
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Preparation of rGO/TNTs Composite Photocatalyst and Studyon Efficiency of Phenol Degradation
DOI:
10.16355/j.cnki.issn1007-9432tyut.2019.05.006
Received:
Accepted:
abstract:
Phenol wastewater pollution is becoming more and more serious,which has threatened human health.In order to improve the photocatalytic degradation performance of phenol wastewater,titanium dioxide nanotubes(TNTs)were prepared by concentrated alkaline hydrothermal method with P25 as titanium source in this paper.The rGO/TNTs composite photocatalyst was synthesized by hydrothermal method.The materials were characterized by SEM,FTIR and EDS,and the reaction kinetics of rGO/TNTs to phenol degradation under different initial concentration of phenol,different dosages of rGO/TNTs,different solution pH values and different dosages of H 2O 2 were studied,and the degradation performance of rGO/TNTs to phenol in water under ultraviolet and visible light was tested.The results showed that rGO and TNTs were tightly bound together by the Ti—O—C chemical bonds.The degradation of phenol by rGO/TNTs under different influencing factors conforms to the first-order reaction kinetic equation.Under the optimal photocatalytic reaction conditions,the degradation rate of 10 mg/L phenol by rGO/TNTs under 10 W ultraviolet light and 500 W visible light can be up to 97%and 98%,respectively,which conforms to the first-order reaction kinetic equation.Under the optimal photocatalytic reaction conditions,the degradation rate of 10 mg/L phenol by rGO/TNTs under 10 W ultraviolet light and 500 W visible light could reach 97%and 98%,respectively.rGO/TNTs widened the light response range of TNTs to a large extent,and had high stability and recycling efficiency.
Keywords:
titanium dioxide nanotubes;reduced graphene oxide;phenol;dynamics