通過太陽能驅(qū)動的光催化產(chǎn)氫（H2）是一種非常有前景的可替代能源,有望緩解日益嚴(yán)重的全球能源危機(jī)和環(huán)境污染問題。最近,氮化碳（g-C3N4）作為一種重要的非金屬半導(dǎo)體,在可見光催化水分解產(chǎn)氫方面受到廣泛的關(guān)注。然而,g-C3N4上電子-空穴對的結(jié)合較快,導(dǎo)致光催化活性不能令人滿意。為了解決上述難題,本論文設(shè)計(jì)并合成了基于g-C3N4的高效異質(zhì)結(jié)構(gòu)光催化劑,以增強(qiáng)電子-電荷分離從而提高光催化活性。此外,本論文研究了在g-C3N4基異質(zhì)結(jié)構(gòu)光催化劑中電子和空穴傳輸?shù)臋C(jī)理。本研究包括三個部分,概述如下:在第一部分中,我們合成了一種高效的可見光驅(qū)動的C3N4/CoTTP Ⅱ型異質(zhì)結(jié)構(gòu)光催化劑,通過在g-C3N4表面上修飾介孔四苯基卟啉鈷（Ⅱ）（CoTPP）分子,應(yīng)用于水分解生產(chǎn)H2。CoTPP分子的引入不僅增強(qiáng)了可見光的吸收,而且通過形成C3N4/CoTPPⅡ型異質(zhì)結(jié)加速了電荷的轉(zhuǎn)移。當(dāng)g-C3N4上負(fù)載4 wt%的CoTPP時,在可見光（λ≥420 nm）下,C3N4/CoTPP復(fù)合催化劑的H2釋放速率提高至46.93 μmol h-1,是g-C3N4（17.21 μmol h-1）的2.73... 

【文章來源】：中國科學(xué)技術(shù)大學(xué)安徽省 211工程院校 985工程院校

【文章頁數(shù)】：121 頁

【學(xué)位級別】：博士

【文章目錄】：
摘要
ABSTRACT
Chapter 1. Introduction
    1.1 Introduction
    1.2 Photocatalytic Water Splitting
        1.2.1 Photocatalytic Water Splitting Mechanism
        1.2.2 Hydrogen Evolution from Photocatalytic Water Splitting
        1.2.3 Photocatalytic Materials and its Properties
    1.3 Graphitic Carbon Nitride (g-C_3N_4)
        1.3.1 Origin, Structure and Properties of g-C_3N_4
        1.3.2 Method of Preparation g-C_3N_4
        1.3.3 Modification of g-C_3N_4
    1.4 Thesis Objectives
    1.5 Thesis Organization
    1.6 References
Chapter 2. Preparation of Graphitic Carbon Nitride/CoTPP Type-Ⅱ Heterostructureswith Significantly Enhanced Photocatalytic Hydrogen Evolution
    2.1 Introduction
    2.2 Experimental Details
        2.2.1 Chemicals and Materials
        2.2.2 Preparation of Photocatalyst
        2.2.3 Materials Characterizations
        2.2.4 Photocatalytic Hydrogen Production Experiment
    2.3 Results and Discussion
    2.4 Summary
    2.5 References
Chapter 3. Developing Novel g-C_3N_4/NPBIm Type-Ⅱ Heterostructures SignificantlyEnhance Visible Photocatalytic Hydrogen Production from Water Splitting
    3.1 Introduction
    3.2 Experimental Details
        3.2.1 Chemicals and Materials
        3.2.2 Preparation of Photocatalysts
        3.2.3 Materials Characterizations
        3.2.4 Photocatalytic Hydrogen Production Experiment
    3.3 Results and Discussion
    3.4 Summary
    3.5 References
Chapter 4. Developing Novel g-C_3N_4/CoBP Nanocomposites with Significantly EnhanceVisible-Light Photocatalytic Hydrogen Production from Water Splitting
    4.1 Introduction
    4.2 Experimental Details
        4.2.1 Chemicals and Materials
        4.2.2 Preparation of Photocatalysts
        4.2.3 Materials Characterizations
        4.2.4 Photocatalytic Hydrogen Production Experiment
    4.3 Results and Discussion
    4.4 Summary
    4.5 References
Chapter 5. Conclusions and Recommendations
    5.1 Summary of Dissertation
    5.2 Future work
Acknowledgement
List of Publications


【參考文獻(xiàn)】：
期刊論文
[1]Recent Advances of Graphitic Carbon Nitride-Based Structures and Applications in Catalyst, Sensing, Imaging, and LEDs[J]. Aiwu Wang,Chundong Wang,Li Fu,Winnie Wong-Ng,Yucheng Lan.  Nano-Micro Letters. 2017(04)
[2]Ferrites boosting photocatalytic hydrogen evolution over graphitic carbon nitride: a case study of（Co, Ni）Fe2O4 modification[J]. Jie Chen,Daming Zhao,Zhidan Diao,Miao Wang,Shaohua Shen.  Science Bulletin. 2016(04)



本文編號：3531146