期刊
DALTON TRANSACTIONS
卷 47, 期 21, 页码 7237-7244出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8dt01348a
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资金
- National Research Foundation of Korea (NRF) grant - Korean government (Ministry of Education) [NRF-2016R1D1A1A02936936]
- NRF grant - Korean government (MEST) [NPF-2015R1A2A1A13027910]
- Human Resources Development Program of the Korean Institute of Energy Technology Evaluation and Planning (KETEP) - Korean government (Ministry of Trade, Industry and Energy) [20174030201830]
We report the coating of metal-free graphitic carbon nitride (g-C3N4) onto titanium dioxide (TiO2) nanorods via a thermal evaporation method. Prior to g-C3N4 coating, TiO2 nanoclusters were grown on TiO2 nanorods to enhance the surface area by dipping in a TiCl3 solution for 12, 24 and 36 h. The prepared films were analyzed to assess the improvement in absorbance and reduction in recombination losses. Nanoclustered TiO2 grown for 24 h and then coated with a g-C3N4 film (i.e., TC_24h_CN) had the highest photocurrent of 235 and 290 A, respectively, when measured by transient photocurrent and linear sweep voltammetry techniques. The enhanced performance resulted from a reduced recombination of electron-hole pairs. The TC_24h_CN film displayed an excellent photoresponse over 15 h of exposure to visible light and hence could potentially be used in water purification device technology.
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