Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 48, Issue 12, Pages 7076-7084Publisher
AMER CHEMICAL SOC
DOI: 10.1021/es500364g
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Funding
- National Natural Science Foundation of China [51176163]
- Special Funds for Major State Basic Research Projects of China [2010CB227001]
- National High Technology R&D Program of China [2012AA050101]
- International Sci. & Tech. Cooperation Program of China [2012DFG61770, 2010DFA72730]
- National Key Technology R&D Program of China [2011BAD14B02]
- Zhejiang Provincial Natural Science Foundation of China [LR14E060002]
- Program for New Century Excellent Talents in University [NCET-11-0446]
- Specialized Research Fund for the Doctoral Program of Higher Education [20110101110021]
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The photoelectrocatalytic (PEG) reduction of CO, into high-value chemicals is beneficial in alleviating global warming and advancing a low-carbon economy. In this work, Pt-modified reduced graphene oxide (Pt-RGO) and Pt-modified TiO2 nanotubes (Pt-TNT) were combined as cathode and photoanode catalysts, respectively, to form a PEC reactor for converting CO2 into valuable chemicals. XRD, XPS, TEM, AFM, and SEM were employed to characterize the microstructures of the Pt-RGO and Pt-TNT catalysts. Reduction products, such as C2H5OH and CH3COOH, were obtained from CO, under band gap illumination and biased voltage. A combined liquid product generation rate (CH3OH, C2H5OH, HCOOH, and CH3COOH) of approximately 600 nmol/(h center dot cm(2)) was observed. Carbon atom conversion rate reached 1,130 nmol/(h center dot cm(2)), which were much higher than those achieved using Pt-modified carbon nanotubes and platinum carbon as cathode catalysts.
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