Synergistic Photocatalytic Dye Oxidation and Hexavalent Chromium Reduction by Chlorine Doped g-C3N4 Nanosheets
ZHAO Wenyu1, YI Futao1,2, GAN Huihui2, ZHANG Huining3, QIAN Yongxing3, JIN Huixia3, ZHANG Kefeng3
1 College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004 2 Faculty of Architecture Engineering and Environment, Ningbo University, Ningbo 315211 3 School of Civil Engineering and Architecture, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100
Abstract: Series of chlorine doped g-C3N4 nanosheets were synthesized by thermal condensation and ultrasonic exfoliating methods using melamine and ammonium chloride. The structural and morphological characterization of the as-prepared samples were detected by powder X-ray diffraction pattern (XRD), X-ray photoelectron spectroscope (XPS), scanning electron microscope (SEM), UV-Vis diffuse reflection spectra (UV-Vis DRS). The photocatalytic activities of samples with different doping ratio and exfoliation time were evaluated under visible light. Moreover, the mixed pollutant solution containing rhodamine B (RhB) and hexavalent chromium (Cr(Ⅵ)) were photocatalytic degraded by the modified samples. Compared with single pollutant in solution, the treatment efficiency of chlorine doped g-C3N4 nanosheets for RhB and Cr(Ⅵ) in the mixed solution enhance 1.4 times and 2.2 times, respectively. In comparison to bulk g-C3N4, chlorine doped g-C3N4 nanosheets sample possessed larger specific surface, better optical absorption performance and better charge separation capability. The separation of photo-excited holes and electrons is promoted by the simultaneously photocatalytic oxidation of RhB and reduction of Cr(Ⅵ), which lead to the synergistic treatment of RhB and Cr(Ⅵ) in mixed solution.
Gan H H, Liu J, Zhang H N, et al. Research on Chemical Intermediates, 2018, 44(3), 2123.2 Wang A W, Wang C D, Fu L, et al. Nano-Micro Letters, 2017, 9(4), 47.3 Jiang L B, Yuan X Z, Pan Y, et al. Applied Catalysis B-Environmental, 2017, 217, 388.4 Jiang L B, Yuan X Z, Zeng G M, et al. ACS Sustainable Chemistry & Engineering, 2017, 5(7), 5831.5 Zhang G G, Zhang M W, Ye X X, et al. Advanced Materials, 2014, 26(5), 805.6 Liu C Y, Zhang Y H, Dong F, et al. Applied Catalysis B-Environmental, 2017, 203, 465.7 Wan J, Hu S Z, Li F Y, et al. Asian Journal of Chemistry, 2014, 26(24), 8543.8 Zhao H X, Yu H T, Quan X, et al. RSC Advance, 2014, (4)2, 624.9 Zhao H X, Yu H T, Quan X, et al. Applied Catalysis B-Environmental, 2014, 152, 46.10 Tang L, Yang F, Zeng G M, et al. Chemical Engineering Journal, 2014, 254, 302.11 Niu P, Zhang L L, Liu G, et al. Advanced Functional Materials, 2013, 22(22), 4763.12 Zhou Y J, Zhang L X, Liu J J, et al. Journal of Materials Chemistry A, 2015, 3, 3862.13 Ye L Q, Liu J Y, Jiang Z, et al. Applied Catalysis B-Environmental, 2013, 142, 1.14 Yang X F, Chen Z P, Xu J S, et al. ACS Applied Materials & Interfaces, 2015, 7 (28), 15285.15 Jiang L B,Yuan X Z, Zeng G M, et al. Applied Catalysis B-Environmental, 2018, 221, 715.16 Wang H, Wang B, Bian Y R, et al. ACS Applied Materials & Interfaces, 2017, 9(26), 21730.17 Wang N, Zheng A Q, Liu X, et al. ACS Applied Materials & Interfaces, 2018, 10(9), 7901.18 Liu X L, Xu K, Chen P Z, et al. Journal of Materials Chemistry A, 2014, 44, 18924.19 Xu Z, Yu X G, Shan Y, et al. Journal of Inorganic Materials, 2017, 32(2), 155(in Chinese).徐赞, 于薛刚, 单妍, 等.无机材料学报, 2017, 32(2),155.20 Wang H, Yuan X Z, Wang H, et al. Applied Catalysis B-Environmental, 2016, 193, 36.21 Dong F, Zhao Z W, Xiong T, et al. ACS Applied Materials & Interfaces, 2013, 5, 11392.22 Yu J G, Yu H G, Cheng B, et al. Journal of Phsical Chemistry B, 2003, 107(50), 13871.23 Guo Y, Li J H, Gao Z Q, et al. Applied Catalysis B-Environmental, 2016, 192, 57.24 Deng Y C, Tang L, Zeng G M, et al. Applied Catalysis B-Environmental, 2017, 203, 343.25 Xiao J D, Xie Y B, Cao H B, et al. Catalysis Communication, 2015, 66, 10.26 Hu S Z, Ma L, Xie Y, et al. Dalton Transaction, 2015, 44, 2088927 He Y M, Zhang L H, Wang X M, et al. RSC Advance, 2014, 4(26), 13610.28 Qiu P X, Xu C M, Chen H, et al. Applied Catalysis B-Environmental, 2017, 206, 319.29 Liu J, Liu Y, Liu N Y, et al. Science, 2015, 347(6225), 970.30 Sun M, Li S L, Yan T, et al. Journal of Hazardous Materials, 2017, 333, 169.
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2019, Vol. 33 
