自從分解水產(chǎn)氫被首次報道以來,許多光催化劑被開發(fā)出來并用于光催化分解水產(chǎn)氫.然而,由于光生電子和空穴的復(fù)合率普遍較高,大部分的光催化劑分解水產(chǎn)氫效率都很低.因此,開發(fā)新型高效的光催化材料至關(guān)重要.具有（Bi₂O₂）²⁺(A_m-1M_mO_3m+1)^2-通式的Aurivillius相層狀鈣鈦礦材料因具有獨(dú)特的層狀結(jié)構(gòu)、元素可調(diào)性以及優(yōu)異的電荷傳輸和分離能力而廣泛應(yīng)用于光催化分解水和去除有機(jī)污染物.此外,當(dāng)該類層狀鈣鈦礦被剝離成超薄納米片時,其光催化性能進(jìn)一步提高.為了進(jìn)一步提高層狀鈣鈦礦的載流子分離能力,將客體（如貴金屬,半導(dǎo)體等）通過化學(xué)反應(yīng)的途徑插入到層狀鈣鈦礦的層間區(qū)域,從而合成出復(fù)合層狀鈣鈦礦被廣泛發(fā)展和應(yīng)用.然而,引入的客體主要是貴金屬和半導(dǎo)體,這類客體的高成本和不均勻分布制約了其進(jìn)一步的應(yīng)用.由于廉價、無毒和穩(wěn)定等優(yōu)點,鎳基材料如Ni,NiO,Ni₂O₃,NiS,NiS₂

【文章來源】：催化學(xué)報. 2017,38(12)北大核心SCICSCD

【文章頁數(shù)】：9 頁

【文章目錄】：
1. Introduction
2. Experimental
    2.1. Chemicals
    2.2. Sample preparation
        2.2.1. Synthesis of Sr Bi2Nb2O9 platelets
        2.2.2. Synthesis of H1.78Sr0.78Bi0.22Nb2O7 platelets
        2.2.3. Synthesis of H1.78Sr0.78Bi0.22Nb2O7 nanosheets
        2.2.4. Synthesis of Ni-CH3CH2NH2/H1.78Sr0.78Bi0.22Nb2O7 hybrid layered perovskite
    2.3. Characterization
    2.4. Photocatalytic H2 evolution
3. Results and discussion
    3.1. Crystal structures of the photocatalysts
    3.2. FTIR and XPS results
    3.3. Formation process of the Ni-EA/HSN Ns hybrid layered perovskite
    3.4. Optical properties of the photocatalysts
    3.5. Photocatalytic activities
    3.6. Mechanism of the enhanced photocatalytic activity
4. Conclusions



本文編號：3454518