Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
Nano-Micro Conference, 2017, 1, 01050
Published Online: 28 October 2017 (Abstract)
The search for active catalysts that efficiently oxidize methane under ambient conditions remains a challenging task for both C1 utilization and atmospheric cleansing [1-6]. Here, we show that when the particle size of zinc oxide is reduced down to the nanoscale, it exhibits high activity for methane oxidation under simulated sunlight illumination, and nano silver decoration further enhances the photo-activity via the surface plasmon resonance. The high quantum yield of 8% at wavelengths <400 nm and over 0.1% at wavelengths ~470 nm achieved on the silver decorated zinc oxide nanostructures shows great promise for atmospheric methane oxidation. Moreover, the nano-particulate composites can efficiently photo-oxidize other small molecular hydrocarbons such as ethane, propane and ethylene, and in particular, can dehydrogenize methane to generate ethane, ethylene and so on. On the basis of the experimental results, a two-step photocatalytic reaction process is suggested to account for the methane photo-oxidation.
 Xuxing Chen; Yunpeng Li; Xiaoyang Pan; David Cortie; Xintang Huang; Zhiguo Yi, Photocatalytic oxidation of methane over silver decorated zinc oxide nanocatalysts. Nature Communications. 7, 12273 (2016). doi:10.1038/ncomms12273
 Xiaoyang Pan; Xuxing Chen; Zhiguo Yi, Photocatalytic oxidation of methane over SrCO3 decorated SrTiO3 nanocatalysts via a synergistic effect. Physical Chemistry Chemical Physics. 18, 31400-31409 (2016). doi:10.1039/C6CP04604E
 Yunpeng Li; Yuanzhu Cai; Xuxing Chen; Xiaoyang Pan; Mingxue Yang; Zhiguo Yi, Photocatalytic oxidation of small molecule hydrocarbons over Pt/TiO2 nanocatalysts. RSC Advances. 6, 2760-2767 (2016). doi:10.1039/C5RA22459D
 Peiqing Long; Yaohong Zhang; Xuxing Chen; Zhiguo Yi, Fabrication of YxBi1−xVO4 solid solutions for efficient C2H4 photodegradation. Journal of Materials Chemistry A. 3, 4163-4169 (2015). doi:10.1039/C4TA05872K
 Dan Wang; Xiaoyang Pan; Guangtao Wang; Zhiguo Yi, Improved propane photooxidation activities upon nano Cu2O/TiO2 heterojunction semiconductors at room temperature. RSC Advances. 5, 22038-22043 (2015). doi:10.1039/C4RA15215H
 Xuxing Chen; Xintang Huang; Zhiguo Yi, Enhanced Ethylene Photodegradation Performance of g-C3N4–Ag3PO4 Composites with Direct Z-Scheme Configuration. Chemistry - A European Journal. 20, 17590-17596 (2014). doi:10.1002/chem.201404284
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