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化工学报  2015 

Fe-Sr2Bi2O5光催化降解低密度聚乙烯膜

DOI: 10.11949/j.issn.0438-1157.20141736, PP. 1939-1946

Keywords: Fe-Sr2Bi2O5,催化,降解,聚乙烯,接触角,自由基

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Abstract:

采用共沉淀法合成的新型光催化剂(Fe-Sr2Bi2O5)与低密度聚乙烯(LDPE)通过熔融共混制备了一种新型光催化降解复合膜(Fe-Sr2Bi2O5/PE)。通过力学性能、接触角、傅里叶变换红外光谱(FT-IR)和场发射扫描电镜(FESEM)等表征手段研究了该催化剂在室温条件下固相光催化降解LDPE复合膜的性能变化。结果表明:Fe-Sr2Bi2O5在紫外光和可见光条件下对LDPE均具有较好的光催化降解能力,其中,紫外灯照射10d后,Fe-Sr2Bi2O5/PE复合膜断裂伸长保留率低于5%,拉伸强度保留率低于40%,接触角降低22.52°,已完全脆化;同时,LDPE复合膜中出现明显的羰基等降解特征吸收峰和降解孔洞;与Sr2Bi2O5和TiO2相比,Fe-Sr2Bi2O5对LDPE具有更好的降解效果。综上所述,在紫外光和可见光条件下,Fe-Sr2Bi2O5对LDPE具有明显的光催化降解作用,为未来光催化降解聚乙烯(PE)提供了一定的新依据。

References

[1]  Tharanathan R N. Biodegradable films and composite coatings: past, present and future [J]. Trends Foods Sci. Technol., 2003, 14(3): 71-78
[2]  Liu G L, Zhu D, Liao S, Ren L, Cui J, Zhou W. Solid-phase photocatalytic degradation of polyethylene-goethite composite film under UV-light irradiation[J]. J. Hazard. Mater., 2009, 172(2/3): 1424-1429
[3]  Yang C J, Gong C Q, Peng T Y, Deng K J, Zan L. High photocatalytic degradation activity of the polyvinyl chloride (PVC)-vitamin C (VC)-TiO2 nano-composite film[J]. J. Hazard. Mater., 2010, 178(1/2/3): 152-156
[4]  Prosun Tribedi,·Alok K Sil. Low-density polyethylene degradation by preudomonas sp.AK2 biofilm [J]. Environ. Sci. Pollut. Res., 2013, 20: 4146-4153
[5]  Sivan A, Szanto M, Pavlov V. Biofilm development of the polyethylene degrading bacterium rhodococcus ruber [J]. Appl. Microbiol. Biotechnol., 2006, 72(2): 346-352
[6]  Ding S L, Liu M Z, Liu Z M. Preparation and study on properties of photo-biodegradable [J]. J. Lanzhou University: Nature Sciences, 2005, 41(1): 64-68
[7]  Liu Zaiman(刘再满), Ding Shenglong(丁生龙), Liu Mingzhu(柳明珠). Photo-degradation properties of photo-biodegradable polyethylene films [J]. Chinese J. Appl. Chem. (应用化学), 2006, 8: 875-880
[8]  Thomas R T, Nair V, Sandhyarani N. TiO2 nanoparticle assisted solid phase photocatalytic degradation of polythene film: a mechanistic investigation [J]. Colloids Surf. A, 2013, 422: 1-9
[9]  Asghar W, Qazi Ishtiaq A, Ilyas H, Khan A A, Aliawan M, Rizwan Aslam M. Comparative solid phase photocatalytic degradation of polythene films with doped and undoped TiO2 nanoparticles [J]. J. Nanomater, 2011, 2011: 1-8
[10]  Dong F, Guo S, Wang H, Li X, Wu Z. Enhancement of the visible light photocatalytic activity of C-doped TiO2 nanomaterials prepared by a green synthetic approach [J]. J. Phys. Chem. C, 2011, 115(27): 13285-13292
[11]  Liu M, Qiu X, Miyauchi M, Hashimoto K. Cu(Ⅱ) oxide amorphous nanoclusters grafted Ti3+ self-doped TiO2: an efficient visible light photocatalyst [J]. Chemistry of Materials, 2011, 23(23): 5282-5286
[12]  Jiang Hongquan(姜洪泉) , Wang Peng(王鹏), Lu Dandan(卢丹丹), Wu Lanying(吴兰英). Crystallite size, surface properties and photocatalytic activity of Gd3+-doped TiO2 nano-powder [J]. Journal of Chemical Industry and Engineering(China) (化工学报), 2006, 57(9): 2194-2200
[13]  Sun Xiuli(孙秀丽), Chen Aiping(陈爱平), Lü Hui(吕慧), He Hongbo(何洪波), He Tiantian(何田田), Lin Qizhi(林启志), Li Chunzhong(李春忠). Synthesis of SBA-15/Ni/TiO2/CNTs composites and their photocatalytic activities [J].CIESC Journal(化工学报), 2014, 65(9): 3718-3723
[14]  Tsukamoto D, Shiraishi Y, Sugano Y, Ichikawa S, Tanaka S, Hirai T. Gold nanoparticles located at the interface of anatase/rutile TiO2 particles as active plasmonic photocatalysts for aerobic oxidation [J]. J. Am. Chem. Soc., 2012, 134(14): 6309-6315
[15]  Shan Z C, Xia Y J, Yang Y X, Ding H M, Huang F Q. Preparation and photocatalytic activity of novel efficient photocatalyst Sr2Bi2O5 [J]. Mater. Lett., 2009, 63(1): 75-77
[16]  Zhu J F, Chen F, Zhang J L, Chen H J, Anpo M. Fe3+-TiO2 photocatalysts prepared by combining sol-gel method with hydrothermal treatment and their characterization [J]. J. Mol. Catal. A: Chem., 2006, 180(1/2): 196-204
[17]  Li Z J, Shen W Z, He W S, Zu X T.Effect of Fe-doped TiO2 nanoparticle derived from modified hydrothermal process on the photocatalytic degradation performance on methylene blue [J]. J. Hazard. Mater., 2008, 155(3): 590-594
[18]  Benítez A, Sánchez J J, Arnal M L, Müller A J, Rodríguez O, Morales G.Abiotic degradation of LDPE and LLDPE formulated with a pro-oxidant additive [J]. Polym. Degrad. Stab., 2013, 98(2): 490-501
[19]  Gijsman P, Meijers G, Vitarelli G. Comparison of the UV-degradation chemistry of polypropylene, polyethylene, polyamide 6 and polybutylene terephthalate [J]. Polym. Degrad. Stab., 1999, 65(3): 433-441
[20]  Bertoldo M, Bronco S, Capplli C, Gragnoli T, Andreotti L.Combining theory and experiment to study the photooxidation of polyethylene and polypropylene [J]. J. Phys. Chem. B, 2003, 107(43): 11880-11888
[21]  Scoponi M, Cimmino S, Kaci M. Photo-stabilisation mechanism under natural weathering and accelerated photo-oxidative conditions of LDPE films for agricultural applications [J]. Polym., 2004, 41(22): 7969-7980
[22]  Liu G L, Liao S J, Zhu D W, Hua Y M, Zhou W B. Innovative photocatalytic degradation of polyethylene film with boron-doped cryptomelane under UV and visible light irradiation [J]. Chem. Eng. J., 2012, 213(1): 286-294
[23]  Park D R, Zhang J L, Ikeue K, Yanmashita H, Anpo M. Photocatalytic oxidation of ethylene to CO2 and H2O on ultrafine powdered TiO2 photocatalysts in the presence of O2 and H2O [J]. J. Catal., 1999, 185(1): 114-119
[24]  Liang W Y, Luo Y, Song S S, Dong Xn M, Yu X Y. High photocatalytic degradation activity of polyethylene containing polyacrylamide grafted TiO2 [J]. Polym. Degrad. Stab., 2013, 98(9): 1754-1761
[25]  Xiong Yuhua(熊玉华), Li Fengyi (李凤仪). Degradation of polyethylene film by Fe3+/TiO2 photocatalyst [J]. Acta Physico-Chimica Sinica (物理化学学报), 2005, 21(6): 607-611
[26]  Zhao X, Li Z W, Chen Y, Shi L, Zhu Y F. Solid-phase photocatalytic degradation of polyethylene plastic under UV and solar light irradiation [J]. J. Mol. Catal. A, 2007, 268(1/2): 101-106

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