Abstract: Fe doped Ag-ZnO nanopowders were synthesized by polymer-network gel method. The microstructures and optical properties of the as-prepared samples were characterized by XRD, SEM, XPS, PL and UV-vis techniques, the photocatalytic activity of these samples was studied by analyzing the degradation of methyl orange and methylene blue under ultraviolet light and simulated sunlight, respectively. The results of XRD and SEM show that Fe doping improves the dispersion of Ag nanoparticles while reducing the grain size of ZnO. The XPS spectrum shows the coexistence of divalent and trivalent Fe, and with the increase of the Fe doping concentration, the Fe ion in the ZnO lattice changes from divalent to trivalent, resulting in the reduced intensity of blue emission peak revealed in the PL spectra. Among all samples, Zn0.96Fe0.01Ag0.03O exhibits the highest photocatalytic activity. Combined with the microstructure and optical properties, we discussed its photocatalytic mechanism.
1 Kamat P V. The Journal of Physical Chemistry C,2007,111(7),2834. 2 Chakrabarti S, Dutta B K. Journal of Hazardous Materials,2004,112(3),269. 3 Bai S N, Tsai H H, Tseng T Y. Thin Solid Films,2007,516(2),155. 4 Li Y L, Deng W H, Ji K J, et al. New Chemical Materials,2013,41(2),104(in Chinese). 李艳玲,邓卫华,冀克俭,等.化工新材料,2013,41(2),104. 5 Chen X, Li Y, Pan X, et al. Nature Communications,2016,7,12273. 6 Zhao F, Shi L Q, Cui J B, et al. Acta Physico-Chimica Sinica,2016,32(8),2069(in Chinese). 赵菲, 时林其, 崔佳宝, 等.物理化学学报,2016,32(8),2069. 7 Wu S D, Song Y L, Li C, et al. New Chemical Materials,2011,39(5),70(in Chinese). 吴诗德, 宋彦良, 李超, 等.化工新材料,2011,39(5),70. 8 Liu T, Li B, Hao Y, et al. Applied Catalysis B Environmental,2015,165,378. 9 Han Z, Ren L, Cui Z, et al. Applied Catalysis B Environmental,2012,126 (38), 298. 10 Du Y Y. A research on the microstructure and photocatalytic performance of Fe-doped zinc oxide. Master's Thesis. Northeastern University,China,2013(in Chinese). 杜艳艳. Fe掺杂ZnO的微结构及其光催化性能的研究. 硕士学位论文, 东北大学,2013. 11 Yu X H. The synthesis, doping and properties study of ZnO nano mate-rials. Ph.D. Thesis, China University of Geosciences, China,2015(in Chinese). 余小红. 纳米ZnO材料的合成、掺杂及其性能研究. 博士学位论文, 中国地质大学,2015. 12 Bousslama W, Elhouichet H, Férid M. Optik-International Journal for Light and Electron Optics,2017,134,88. 13 Yan X, Zou C, Gao X, et al. Journal of Materials Chemistry,2012,22(12),5629. 14 Ramírez-Ortega D, Meléndez A M, Acevedo-Peña P, et al. Electrochimica Acta, 2014,140(27),541. 15 Zhang L, Xu M, Yu F, et al. Acta Physica Sinica,2013,62(2),27501(in Chinese). 张丽, 徐明, 余飞,等.物理学报,2013,62(2),27501. 16 Zhou P F, Yuan H, Xu X N, et al. Acta Physica Sinica,2015,64(24),344(in Chinese). 周攀钒, 袁欢, 徐小楠,等.物理学报,2015,64(24),344. 17 Xu M, Yuan H, You B, et al. Journal of Applied Physics,2014,115(9),951. 18 Yuan H, Xu M, Du X.Materials Letters,2015,154,94. 19 Singh S, Barick K C, Bahadur D. International Journal of Nanoscience,2011,10,1001. 20 Georgekutty R, Seery M K, Pillai S C. Journal of Physical Chemistry C,2008,112(35),13563. 21 Reddy B S, Reddy S V, Reddy N K, et al. Advanced Materials Letters,2014,5(4),199. 22 Akbariadergani B, Saghi M H, Eslami A, et al. Environmental Technology,2017,39(12),1566. 23 Eslami A, Akbari-Adergani B, Bandpey A M, et al. Materials Letters,2017,197,205. 24 Meng A, Li X, Wang X, et al. Ceramics International,2014,40(7),9303. 25 Chen Y, Yu F, Liu Y T, et al. Materials Review B:Research Papers,2017,31(12),120(in Chinese). 陈雨, 余飞, 刘禹彤, 等.材料导报:研究篇,2017,31(12),120. 26 Nian H, Hahn S, Koo K, et al. Materials Letters,2010,64,157. 27 Zhang Q P, Xu X N, Liu Y T, et al. Scientific Reports,2017,7,46424. 28 Chen C, Zheng Y, Zhan Y, et al. Dalton Transactions,2011,40(37),9566. 29 Jin L Q, Yuan F L, Hou H G, et al. Science China,2004,34(4),310(in Chinese). 井立强, 袁福龙, 侯海鸽,等.中国科学,2004,34(4),310. 30 Karmakar D, Mandal S K, Kadam R M, et al. Physical Review B Condensed Matter,2007,75(14),1418. 31 Jing L, Qu Y, Wang B, et al. Solar Energy Materials & Solar Cells,2006,90(12),1773.