發(fā)布時間：2020-12-05 23:04

　　隨著工業(yè)化、現(xiàn)代化的進程,水污染、空氣污染等環(huán)境污染接踵而來。人類健康受到水污染等環(huán)境污染的嚴重影響。工業(yè)廢料的不當處置是水體污染的主要來源之一。染料工業(yè),紡織工業(yè),皮革制革和制藥等化工廠消耗相當多的潛在致癌物質(zhì)。此類物質(zhì)進入水體,就會成為水生生物和人類健康的致命危害。迄今為止,已經(jīng)采取了許多措施以提高廢水處理效率。各種物理或化學方法,如絮凝、吸附、光催化等用于去除或降解廢水中的污染物。物理方法僅可分離污染物,而化學方法能夠降解污染物。但是化學方法有可能產(chǎn)生了二次污染,即從處理過的水中除去化學物質(zhì)。避免化學處理方法造成二次污染也具有一定的挑戰(zhàn)性,是一個研究熱點。一些研究引入了催化劑載體材料,為廢水處理后回收催化劑提供了可能性。這些研究還采用環(huán)保材料作為催化劑的載體,通過提高催化效率,減少催化劑用量,使整個過程更加符合環(huán)保要求。本論文主要研究了金屬硫?qū)僭鼗镌谑杷陀H水纖維素基氣凝膠表面的附著;制備了金屬硫化物功能化纖維素氣凝膠,用于光催化和類芬頓法從廢水中去除及降解有機染料。基于纖維素氣凝膠具有優(yōu)異的吸附能力,且易于改性,纖維素氣凝膠作為催化劑的載體材料展現(xiàn)了巨大潛力。在本研究中,我... 

【文章來源】：江蘇大學江蘇省

【文章頁數(shù)】：84 頁

【學位級別】：碩士

【文章目錄】：
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


【參考文獻】：
期刊論文
[1]花狀硫化銅級次納米結(jié)構(gòu)的制備及可見光催化活性研究[J]. 趙娟,胡慧芳,曾亞萍,程彩萍.  物理學報. 2013(15)



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