1. S. Sakthivel, B. Neppolian, M. V. Shankar, B. Arabindoo, M. Palanichamy and V. Murugesan, Solar Energy Materials and Solar Cells, 2003, 77, 65-82.
2. A. E. Rakhshani, Solid-State Electronics, 1986, 29, 7-17.
3. D. C. Marcano, D. V. Kosynkin, J. M. Berlin, A. Sinitskii, Z. Sun, A. Slesarev, L. B. Alemany, W. Lu and J. M. Tour, ACS Nano, 2010, 4, 4806-4814.
4. P. Roy, A. P. Periasamy, C.-T. Liang and H.-T. Chang, Environmental Science & Technology, 2013, 47, 6688-6695.
5. L. Zhang, L. Du, X. Yu, S. Tan, X. Cai, P. Yang, Y. Gu and W. Mai, ACS Applied Materials & Interfaces, 2014, 6, 3623-3629.
6. C. Han, M.-Q. Yang, N. Zhang and Y.-J. Xu, Journal of Materials Chemistry A, 2014, 2, 19156-19166.
7. M. S. Arif Sher Shah, K. Zhang, A. R. Park, K. S. Kim, N.-G. Park, J. H. Park and P. J. Yoo, Nanoscale, 2013, 5, 5093-5101.
8. B. Y. Xia, B. Wang, H. B. Wu, Z. Liu, X. Wang and X. W. Lou, Journal of Materials Chemistry, 2012, 22, 16499-16505.
9. L. Ye, Z. Li, X. Zhang, F. Lei and S. Lin, Journal of Materials Chemistry A, 2014, 2, 21010-21019.
10. H. Gu, Y. Yang, J. Tian and G. Shi, ACS Applied Materials & Interfaces, 2013, 5, 6762-6768.
11. L. Xu, F. Zhang, X. Song, Z. Yin and Y. Bu, Journal of Materials Chemistry A, 2015, 3, 5923-5933.
12. F. E. Osterloh, Chemical Society Reviews, 2013, 42, 2294-2320.
13. H.-L. Jiang and Q. Xu, Catalysis Today, 2011, 170, 56-63.