Ag/TiO<sub>2</sub>光电催化降解染料及出水有机质影响机制

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1166 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract A photoelectrocatalysis (PEC) system was constructed to degrade the methyl orange (MO). In this system, Ag/TiO₂ nanotube arrays (Ag/TNTAs), used as the anode, were prepared with the combination method of anodization and electrochemical deposition, and the carbon/PTFE was used as the cathode. It was found that this Ag/TNTAs PEC system achieved a much higher degradation efficiency of 68.2% than those of photocatalysis (18.9%), electrochemical oxidation (38.2%) and direct photolysis. Besides, the addition of effluent organic matter (EfOM) from water treatment plants could promote the degradation of MO in the Ag/TNTAs PEC system when the initial EfOM concentration was equal or less than 1.0 mgC/L. when the EfOM concentration was 0.4 mgC/L, the enhancing effect achieved the high degree. However, the high concentrations of EfOM inhibited the degradation performance of MO in the PEC system. This study showed that the PEC system could catalyze the degradation of dyes efficiently, and the addition of EfOM within a certain threshold concentration range could further promote the photocatalytic degradation.

Key words： photoelectrocatalysis titanium dioxide dye effluent organic matter

Received: 02 September 2020

PACS:

X703

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	HE Huan
	MA Qi-cheng
	DENG Hong-yu
	HUANG Bin
	PU Hong-ping
	WAN Xing
	PAN Xue-jun

Cite this article:

HE Huan,MA Qi-cheng,DENG Hong-yu等. Ag/TiO₂ photoelectrocatalytic degradation of dye and effluent organic matter influence on its mechanism[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(4): 1689-1696.

URL:

http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I4/1689

[1]	Isik M, Sponza D T. Biological treatment of acid dyeing wastewater using a sequential anaerobic/aerobic reactor system[J]. Enzyme and Microbial Technology, 2006,38(7):887-892.
[2]	Zhang G, Okajima I, Sako T. Decomposition and decoloration of dyeing wastewater by hydrothermal oxidation[J]. Journal of Supercritical Fluids, 2016,112:136-142.
[3]	丁绍兰,李郑坤,王睿.染料废水处理技术综述[J]. 水资源保护, 2010,26(3):73-78. Ding S L, Li Z K, Wang R. Summary of treatment of dye stuff wastewater[J]. Water Resources Protection, 2010,26(3):73-78.
[4]	Hua X, Zhang Y, Ma N, et al. A new coral structure TiO2/Ti film electrode applied to photoelectrocatalytic degradation of Reactive Brilliant Red[J]. Journal of Hazardous Materials, 2009,172(1):256-261.
[5]	庞婧慧,白丽明.Ag3PO4/TiO2复合材料的制备及其降解亚甲基蓝研究[J]. 高师理科学刊, 2020,40(5):52-56. Pang J H, Bai L M. Study on preparation of Ag3PO4/TiO2 composite and photocatalytic degradation of methylene blue[J]. Journal of Science of Teachers' College and University, 2020,40(5):52-56.
[6]	Zheng X, Li D, Li X, et al. Photoelectrocatalytic degradation of rhodamine B on TiO2 photonic crystals[J]. Physical Chemistry Chemical Physics, 2014,16(29):15299-15306.
[7]	Xie K, Sun L, Wang C, et al. Photoelectrocatalytic properties of Ag nanoparticles loaded TiO2 nanotube arrays prepared by pulse current deposition[J]. Electrochimica Acta, 2010,55(24):7211-7218.
[8]	Zhuang H, Lin C, Lai Y, et al. Some critical structure factors of titanium oxide manotube array in its photocatalytic activity[J]. Environmental Science & Technology, 2007,41(13):4735-4740.
[9]	Zhang Z, Yuan Y, Shi G, et al. Photoelectrocatalytic activity of highly ordered TiO2 nanotube arrays electrode for azo dye degradation[J]. Environmental Science & Technology, 2007,41(17):6259-6263.
[10]	Ren D, Huang B, Yang B, et al. Photobleaching alters the photochemical and biological reactivity of humic acid towards 17alpha-ethynylestradiol[J]. Environmental Pollution, 2017,220(B):1386-1393.
[11]	Kim S, Cho H, Joo H, et al. Evaluation of performance with small and scale-up rotating and flat reactors; photocatalytic degradation of bisphenol A, 17beta-estradiol, and 17alpha-ethynyl estradiol under solar irradiation[J]. Journal of Hazardous Materials, 2017,336:21-32.
[12]	Mostafa S, Rosario-Ortiz F L. Singlet oxygen formation from wastewater organic matter[J]. Environmental Science & Technology, 2013,47(15):8179-8186.
[13]	Lin H, Niu J, Ding S, et al. Electrochemical degradation of perfluorooctanoic acid (PFOA) by Ti/SnO2-Sb, Ti/SnO2-Sb/PbO2 and Ti/SnO2-Sb/MnO2 anodes[J]. Water Research, 2012,46(7):2281-2289.
[14]	Li P, Zhao G, Cui X, et al. Constructing stake structured TiO2-NTs/Sb-Doped SnO2 electrode simultaneously with high electrocatalytic and photocatalytic performance for complete mineralization of refractory aromatic acid[J]. Journal of Physical Chemistry C, 2009,113(6):2375-2383.
[15]	Liu X, Liu Z, Lu J, et al. Electrodeposition preparation of Ag nanoparticles loaded TiO2 nanotube arrays with enhanced photocatalytic performance[J]. Applied Surface Science, 2014,288:513-517.
[16]	Zhan J, Wang H, Pan X, et al. Simultaneous regeneration of p-nitrophenol-saturated activated carbon fiber and mineralization of desorbed pollutants by electro-peroxone process[J]. Carbon, 2016, 101:399-408.
[17]	徐秀泉,戴杨叶,宴鹤,等.碘化钾还原法测定自然水体中微量过氧化氢的研究[J]. 安徽农业科学, 2011,39(22):13641-13643. Xu X Q, Dai Y Y, Yan H, et al. Potassium iodine reduction method for determining the trace hydrogen peroxide in water[J]. Journal of Anhui Agricultural Sciences, 2011,39(22):13641-13643.
[18]	O'Connor M, Helal S R, Latch D E, et al. Quantifying photo-production of triplet excited states and singlet oxygen from effluent organic matter[J]. Water Research, 2019,156:23-33.
[19]	He H, Luo N, Huang B, et al. Optical characteristics and cytotoxicity of dissolved organic matter in the effluent and sludge from typical sewage treatment processes[J]. Science of the Total Environment, 2020,725:138381.
[20]	Demirci S, Ozturk B, Yildirim S, et al. Synthesis and comparison of the photocatalytic activities of flame spray pyrolysis and sol-gel derived magnesium oxide nano-scale particles[J]. Materials Science in Semiconductor Processing, 2015,34:154-161.
[21]	Jia Y, Ye L, Kang X, et al. Photoelectrocatalytic reduction of perchlorate in aqueous solutions over Ag doped TiO2nanotube arrays[J]. Journal of Photochemistry and Photobiology A-Chemistry, 2016, 328:225-232.
[22]	Spadavecchia F, Cappelletti G, Ardizzone S, et al. Solar photoactivity of nano-N-TiO2 from tertiary amine:role of defects and paramagnetic species[J]. Applied Catalysis B-Environmental, 2010,96(3/4):314-322.
[23]	Lian Z, Wang W, Xiao S, et al. Plasmonic silver quantum dots coupled with hierarchical TiO2 nanotube arrays photoelectrodes for efficient visible-light photoelectrocatalytic hydrogen evolution[J]. Scientific Reports, 2015,5(10461).
[24]	He H, Sun S, Gao J, et al. Photoelectrocatalytic simultaneous removal of 17alpha-ethinylestradiol and E. coli using the anode of Ag and SnO2-Sb 3D-loaded TiO2 nanotube arrays.[J]. Journal of Hazardous Materials, 2020,398:122805.
[25]	杨黄根,冉小春,檀家雯,等.商用TiO2负载贵金属光催化剂的制备及其降解含染料废水的性能研究[J]. 化工新型材料, 2020,1(10):1006-3536. Yang H G, Ran X C, Tan J W et al. Preparation of noble metal supported on the commercial TiO2 photocatalysts and their performance for the degradation of dye-containing wastewater[J]. New Chemical Materials, 2020,1(10):1006-3536.
[26]	Li X Z, Li F B. Study of Au/Au3+-TiO2 photocatalysts toward visible photooxidation for water and wastewater treatment[J]. Environmental Science & Technology, 2001,35(11):2381-2387.
[27]	Sakar M, Prakash R M, Do T. Insights into the TiO2-based photocatalytic systems and their mechanisms[J]. Catalysts, 2019,9(8):680.
[28]	王伟.新型高效C-PTFE电极的制备及电芬顿处理有机染料废水[J]. 秦皇岛:燕山大学, 2011. Wang W. Preparation of a highly effective C-PTFE electrode and treatment of dye wastewater by Electro-Fenton system[J]. Qin Huang-dao:Yanshan University, 2011.
[29]	He H, Huang B, Gu L, et al. Stimulated dissolved organic matter by electrochemical route to produce activity substances for removing of 17alpha-ethinylestradiol[J]. Journal of Electroanalytical Chemistry. 2016,780:233-240.
[30]	Zhou H, Lian L, Yan S, et al. Insights into the photo-induced formation of reactive intermediates from effluent organic matter:The role of chemical constituents[J]. Water Research. 2017,112:120-128.
[31]	Bodhipaksha L C, Sharpless C M, Chin Y P, et al. Role of effluent organic matter in the photochemical degradation of compounds of wastewater origin[J]. Water Research. 2017,110:170-179.