金属硫化物功能化纤维素气凝胶的构筑及其光催化降解印染废水中有机染料性能研究

发布时间：2020-12-05 23:04

　　随着工业化、现代化的进程,水污染、空气污染等环境污染接踵而来。人类健康受到水污染等环境污染的严重影响。工业废料的不当处置是水体污染的主要来源之一。染料工业,纺织工业,皮革制革和制药等化工厂消耗相当多的潜在致癌物质。此类物质进入水体,就会成为水生生物和人类健康的致命危害。迄今为止,已经采取了许多措施以提高废水处理效率。各种物理或化学方法,如絮凝、吸附、光催化等用于去除或降解废水中的污染物。物理方法仅可分离污染物,而化学方法能够降解污染物。但是化学方法有可能产生了二次污染,即从处理过的水中除去化学物质。避免化学处理方法造成二次污染也具有一定的挑战性,是一个研究热点。一些研究引入了催化剂载体材料,为废水处理后回收催化剂提供了可能性。这些研究还采用环保材料作为催化剂的载体,通过提高催化效率,减少催化剂用量,使整个过程更加符合环保要求。本论文主要研究了金属硫属元素化物在疏水和亲水纤维素基气凝胶表面的附着;制备了金属硫化物功能化纤维素气凝胶,用于光催化和类芬顿法从废水中去除及降解有机染料。基于纤维素气凝胶具有优异的吸附能力,且易于改性,纤维素气凝胶作为催化剂的载体材料展现了巨大潜力。在本研究中,我... 

【文章来源】：江苏大学江苏省

【文章页数】：84 页

【学位级别】：硕士

【文章目录】：
Abstract
摘要
Abbreviations
1 Chapter1:Introduction
    1.1 Research background and significance
    1.2 Literature Review
        1.2.1 Copper Sulfide（CuS）
        1.2.2 Cellulose Based Aerogel（CBA）
    1.3 Contents of the Thesis
2 Chapter2 Preparation& Characterization Techniques
    2.1 The chemical bath deposition technique
    2.2 Functionalization Process
        2.2.1 Aerogel Functionalization
    2.3 Scanning Electron Microscope（SEM）
    2.4 Fourier-change infrared spectroscopy（FT-IR）
    2.5 Ultraviolet-visible（UV-vis）Spectroscopy
    2.6 Atomic absorption spectroscopy（AAS）
    2.7 X-ray powder diffraction（XRD）
    2.8 X-ray photoelectron spectroscopy（XPS）
3 Chapter3:Photocatalyst Synthesis and Activity
    3.1 Introduction
    3.2 Experimental
        3.2.1 Materials
        3.2.2 Synthesis of cellulose based aerogel（CBA）
        3.2.3 Synthesis of CuS decorated CBA as bioadsorbent and biocatalyst
        3.2.4 Characterization of CuS-Functionalized CBA
        3.2.5 Evaluation of dye degradation by CuS/CBA composite catalyst
    3.3 Catalyst Preparation and activity test against MB
        3.3.1 Synthesis and characterization of CuS decorated CBA as biocatalyst
    3.4 Photocatalysis activity
        3.4.1 Catalyst dosage effect on degradation of Methylene Blue
        3.4.2 Initial Methylene Blue concentration effect on photodegradation
        3.4.3 Effect of pH on Photocatalytic Performance
        3.4.4 Photo-Fenton Reaction
        3.4.5 Photocatalytic Mechanism
        3.4.6 Recycling Performance
    3.5 Conclusion
4 Chapter4:CuS/CBA Photocatalytic activity against MV,MG and RhB
    4.1 Effect of CuS loading on CBA and its activity against MG,RhB and MV
        4.1.1 Effect of CuS loading on CBA matrix and its activity against MG
        4.1.2 Effect of CuS loading on CBA matrix and its activity against RhB
        4.1.3 Effect of CuS loading on CBA matrix and its activity against MV
    4.2 CBc100 against Malachite Green（MG）
    4.3 CBc100 against variable initial MG dye concentration
    4.4 CBc100 against Rhodamine Blue（RhB）
    4.5 CBc100 againit variable initial RhB dye concentration
    4.6 CBc100 against Methyl Violet（MV）
    4.7 CBc100 against variable initial MV dye concentration
    4.8 CBc100 Photo-Fenton-like reactions against MG,RhB and MV
    4.9 Conclusion and future perspectives for CuS/CBA
5 Chapter5:Nickel Sulfide/CBA future perspectives
    5.1 NiS/CBA Synthesis
        5.1.1 CBn100 dosage effect on photodecomposition of Rose Bengal Dye（RB）
        5.1.2 Effect of initial RB dye concentration on Photocatalytic performance of CBn
        5.1.3 Adsorption and Photocatalysis of NiS/CBA
        5.1.4 NiS/CBA Composite Catalyst Study Conclusion
6 Chapter6:Cadmium Sulfide/CBA future perspectives
    6.1 CdS/CBA Synthesis
        6.1.1 CBd100 composite catalyst dosage effect on decomposition of Methyl Orange（MO）
        6.1.2 Effect of MO dye concentration on Photocatalytic performance of CBd
        6.1.3 Adsorption and Photo catalysis of CBd100
        6.1.4 CdS/CBA Composite Catalyst Study Conclusion
7 Chapter7:Conclusion
    7.1 Conclusion
    7.2 Innovation
    7.3 Future Perspectives
References
My Publication


【参考文献】：
期刊论文
[1]花状硫化铜级次纳米结构的制备及可见光催化活性研究[J]. 赵娟,胡慧芳,曾亚萍,程彩萍.  物理学报. 2013(15)



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