Songcan Wang, Jung Ho Yun, Lianzhou Wang*

 

School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology
The University of Queensland
Brisbane, QLD, Australia

 

The increasing demand of energy, depletion of fossil energy and severe environmental issues drive the exploitation of alternative renewable energy sources. Solar energy has been regarded as a promising candidate due to its inherent properties of earth abundance, clean, and renewability. Converting solar energy into clean fuels such as hydrogen via photoelectrochemical (PEC) water splitting can be effective to address the above issues. Currently, the majority of hydrogen production is derived from fossil fuels, which is energy intensive and will generate greenhouse gases such as CO2. During PEC water splitting, the only energy input is sunlight and the reactant is water, which can achieve zero-emission production of hydrogen. For practical application, low-cost, high efficiency, and reasonable lifetime is the target for PEC water splitting, which is mainly dependent on the development of semiconductor photoelectrodes. This talk will focus on crystal facet engineering for designing efficient photoanodes such as WO3 1 and BiVO42 for PEC water splitting. The underlying mechanism will be presented.

Figure 1: (a) photocurrent density vs. applied potential curve of (002) WO3 photoanode; (b) PEC performance of electrochemical-treated BiVO4 photoanodes with different crystal facet orientations.

​References

1.   S. Wang, H. Chen, G. Gao, T. Butburee, M. Lyu, S. Thaweesak, J.-H. Yun, A. Du, G. Liu and L. Wang, Nano Energy, 2016, 24, 94-102.

2.   S. Wang, P. Chen, J.-H. Yun, Y. Hu and L. Wang, Angew. Chem. Int. Ed., 2017, DOI: 10.1002/anie.201703491.

Biographic Details

Name: Songcan Wang

Title: Mr.

Affiliation, Country: The University of Queensland, Australia

E-mail: s.wang3@uq.edu.au

Research interests: Photoelectrochemical and photocatalytic energy conversion.