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| Preparation of modified PAN nonwoven Fe complex and its photocatalytic performance on formaldehyde degradation |
| HAN Xu, HAN Zhen-bang, ZHAO Xiao-ming |
| Division of Textiles, Tianjin Polytechnic University, Tianjin 300387, China |
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Abstract Polyacrylonitrile nonwoven (nPAN) were chemically modified with hydroxylamine, and the obtained amidoximated polyacrylonitrile nonwoven (AO-nPAN) were coordinated with Fe (III) to prepare modified nPAN supported Fe complexes (Fe-nPAN). The complexes were characterized using Scanning electron microscope (SEM), Fourier Transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and UV-vis absorption spectra, and then employed as photocatalysts in the oxidative degradation of formaldehyde. The results indicated that increasing Fe (III) concentration, reaction temperature and weight gain rate of AO-nPAN led to higher Fe (III) content of Fe-nPAN. The amidoxime groups were coordinated with Fe (III) in Fe-nPAN, which gave the catalyst a remarkable absorption in the visible region. Increasing both Fe (III) content of Fe-nPAN and visible irradiation could significantly accelerate the formaldehyde degradation, and the catalyst exhibited much higher photocatalytic activity than the PAN yarn Fe complex under similar conditions.
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Received: 30 September 2015
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| [1] |
叶锦韶,尹 华,彭 辉,等.高效生物吸附剂处理含铬废水 [J]. 中国环境科学, 2005,25(2):245-248.
|
| [2] |
Gao P, Chen X M, Shen F, et al. Removal of chromium (VI) from wastewater by combined electrocoagulation-electroflotation without a filter [J]. Separation and Purfication Technology, 2005,43(2):117-123.
|
| [3] |
吕淑彬,李雪瑾,覃 宇,等.TiO2纳米孔阵列光催化废水燃料电池的性能研究 [J]. 中国环境科学, 2013,33(2):221-226.
|
| [4] |
Ding Z, Lu G Q, Greenfield P F. Role of the crystallite phase of TiO2 in heterogeneous photocatalysis for phenol oxidation in water [J]. The Journal of Physical Chemistry B, 2000,104(19): 4815-4820.
|
| [5] |
Schwitzgebel J, Ekerdt J G, Gerischer H, et al. Role of the oxygen molecule and of the photogenerated electron in TiO2-photocatalyzed air oxidation reactions [J]. The Journal of Physical Chemistry, 1995,99(15):5633-5638.
|
| [6] |
唐建军,陈益清,李文龙.TiO2及负载Fe(Ⅲ)可见光催化H2O2降解扑草净的协同效应 [J]. 中国环境科学, 2015,35(3):777-782.
|
| [7] |
冯 骞,施明杰,操家顺.钒酸银改性二氧化钛制备及其可见光光催化性能研究 [J]. 中国环境科学, 2015,35(11):3317-3324.
|
| [8] |
李明玉,赵 倩,曾小龙,等.TiO2光电催化中光生电子降解对苯醌的行为研究 [J]. 中国环境科学, 2015,35(5):1397-1402.
|
| [9] |
李 佳,傅平丰,张彭义.纳米Au/TiO2薄膜真空紫外光催化降解甲醛 [J]. 中国环境科学, 2010,30(11):1441-1445.
|
| [10] |
Noguchi T, Fujishima A, Sawunyama P, et al. Photocatalytic degradation of gaseous formaldehyde using TiO2 film [J]. Environmental Science & Technology, 1998,32(23):3831-3833.
|
| [11] |
Karakas G, Yetisemiyen P. Room Temperature Photocatalytic Oxidation of Carbon Monoxide Over Pd/TiO2-SiO2Catalysts [J]. Topics in Catalysis, 2013,56(18-20SI):1883-1891.
|
| [12] |
Bamwenda G R, Tsubota S, Nakamura T, et al. The influence of the preparation methods on the catalytic activity of platinum and gold supported on TiO2 for CO oxidation [J]. Catalysis Letters, 1997,44(1/2):83-87.
|
| [13] |
Asahi R, Morikawa T, Ohwaki T, et al. Visible-light photocatalysis in nitrogen-doped titanium oxides [J]. Science., 2001,293(5528):269-271.
|
| [14] |
陈 鹏,胡相红,陈 超,等.负载型TiO2光催化剂研究进展 [J]. 材料开发与应用, 2013,28(4):117-124.
|
| [15] |
Dong Y, Han Z, Liu C, et al. Preparation and photocatalytic performance of Fe (III)-amidoximated PAN fiber complex for oxidative degradation of azo dye under visible light irradiation [J]. Science of The Total Environment, 2010,408(10):2245-2253.
|
| [16] |
Ishtchenko V V, Vitkovskaya R F, Huddersman K D. Investigation of the mechanical and physico-chemical properties of a modified PAN fibrous catalyst [J]. Applied Catalysis A: General, 2003,242(2):221-231.
|
| [17] |
Ishtchenko V V, Huddersman K D, Vitkovskaya R F. Production of a modified PAN fibrous catalyst and its optimisation towards the decomposition of hydrogen peroxide [J]. Applied Catalysis A: General, 2003,242:123-137.
|
| [18] |
Han Z B, Dong Y C, Dong S M. Copper-iron bimetal modified PAN fiber complexes as novel heterogeneous Fenton catalysts for degradation of organic dye under visible light irradiation [J]. Journal of Hazardous Materials, 2011,189(1/2):241-248.
|
| [19] |
Yuranova T, Enea O, Mielczarski E, et al. Fenton immobilized photo-assisted catalysis through a Fe/C structured fabric [J]. Applied Catalysis B: Environmental, 2004,49(1):39-50.
|
| [20] |
董永春,武金娜,孙苏婷,等.偕胺肟改性聚丙烯腈纤维与不同金属离子之间的配位反应性能 [J]. 四川大学学报(工程科学版), 2011,(1):173-178.
|
| [21] |
何平笙.WLF方程-链段运动的特殊温度依赖关系 [J]. 高分子通报, 2002,(2):75-78.
|
| [22] |
董永春,杜 芳,马汉晓,等.铁改性聚丙烯腈纤维光催化剂的制备及其对活性红MS的降解 [J]. 过程工程学报, 2008,8(2): 359-365.
|
| [23] |
Lin W, Lu Y, Zeng H. Studies of the preparation, structure, and properties of an acrylic chelating fiber containing amidoxime groups [J]. Journal of Applied Polymer Science, 1993,47(1):45-52.
|
| [24] |
El-shishtawy R M, Ahmed N S E. Anionic coloration of acrylic fibre. Part 1: efficient pretreatment and dyeing with acid dyes [J]. Coloration Technology, 2005,121(3):139-146.
|
| [25] |
韩曙鹏,徐樑华,曹维宇,等.X射线衍射法研究聚丙烯腈原丝的晶态结构 [J]. 北京化工大学学报(自然科学版), 2005,32(2):63-67.
|
| [26] |
Li L, Jin J, Shi Z, et al. Cd (II)-M (II) hetero-nuclear coordination polymers: Synthesis, structure and photo-electric properties (M= Fe, Co, Cd) [J]. Inorganica Chimica Acta, 2010,363(4):748-754.
|
| [27] |
Kunkely H, Vogler A. Photoredox reaction of (Pcts)FeIII(O22-) FeIII(Pcts) with PctsH2 = phthalocyaninetetrasulfonate induced by peroxide to Fe(III) charge transfer excitation [J]. Inorganica Chimica Acta, 2005,358(13):4086-4088.
|
| [28] |
Dubrovski P D, Cebasek P F. Analysis of the mechanical properties of woven and nonwoven fabrics as an integral part of compound fabrics [J]. Fibers and Textiles in Eastern Europe, 2005,13(3):50.
|
| [29] |
籍宏伟,陈 希,段 苒,等.分子氧作为氧化剂的铁络合物可见光光催化降解有机污染物及其机理研究 [C]//中国化学会第27届学术年会第02分会场摘要集, 2010.
|
| [30] |
Pignatello J J, Liu D, Huston P. Evidence for an additional oxidant in the photoassisted Fenton reaction [J]. Environmental Science & Technology, 1999,33(11):1832-1839.
|
| [31] |
杨旭红.非织造材料(纤维网)形态结构的表征与分形模拟 [D]. 苏州:苏州大学, 2003.
|
| [32] |
陈兆文,徐文国.改性PAN纤维部分水解法制备离子交换纤维 [J]. 北京理工大学学报, 2008,28(2):177-180.
|
| [33] |
韩振邦,董永春,马 斌,等.不同PAN纤维铁配合物光催化偶氮染料降解反应 [J]. 太阳能学报, 2011,32(3):408-415.
|
|
|
|
