| 金@氧缺陷二氧化钛核壳纳米颗粒的制备及光催化产氢 |
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| 引用本文： | 寇书芳,封振宇,王春省,杨剑.金@氧缺陷二氧化钛核壳纳米颗粒的制备及光催化产氢[J].无机化学学报,2013,29(18). |
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| 作者姓名： | 寇书芳 封振宇 王春省 杨剑 |
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| 作者单位： | 山东大学化学与化工学院, 济南 250100,山东大学化学与化工学院, 济南 250100,山东大学化学与化工学院, 济南 250100,山东大学化学与化工学院, 济南 250100 |
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| 基金项目： | 国家自然科学基金（No.21172076）山东省泰山学者基金（No.ts201511004）资助项目。 |
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| 摘 要： | 通过水解TiCl3在金纳米颗粒外表生长TiO2，然后在Ar/H2气氛中高温煅烧成功地合成了核壳形貌的Au@H-TiO2缺陷结构。采用XRD、TEM、XPS、UV-Vis测试方法对产物的物相结构、形貌及光吸收能力做了系统的分析。与不存在缺陷态的TiO2和Au@A-TiO2相比，Au@H-TiO2表现出最高的产氢速率，这可以归因于其电荷分离效率的提高和电荷转移阻抗的降低，瞬态光电流测试以及电化学阻抗数据证实了这一结论。这些性能的改进可能与Au@H-TiO2中的Ti3+自掺杂和Au修饰有关。
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| 关 键 词： | 二氧化钛 缺陷结构 纳米材料 光催化制氢 |
| 收稿时间： | 2017/2/18 0:00:00 |
| 修稿时间： | 2017/4/24 0:00:00 |
Facile Synthesis of Core-Shell Au@H-TiO2 Nanoparticles for Photocatalytic Hydrogen-Generation |
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| KOU Shu-Fang,FENG Zhen-Yu,WANG Chun-Sheng and YANG Jian.Facile Synthesis of Core-Shell Au@H-TiO2 Nanoparticles for Photocatalytic Hydrogen-Generation[J].Chinese Journal of Inorganic Chemistry,2013,29(18). |
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| Authors: | KOU Shu-Fang FENG Zhen-Yu WANG Chun-Sheng and YANG Jian |
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| Institution: | Ministry of Education School of Chemistry and Chemical Engineering, Shandong University, Jinan 200050,Ministry of Education School of Chemistry and Chemical Engineering, Shandong University, Jinan 200050,Ministry of Education School of Chemistry and Chemical Engineering, Shandong University, Jinan 200050 and Ministry of Education School of Chemistry and Chemical Engineering, Shandong University, Jinan 200050 |
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| Abstract: | Gold nanoparticles coated by oxygen-deficient TiO2 (Au@H-TiO2) were successfully synthesized by a slow hydrolysis of TiCl3 in the presence of gold nanoparticles, followed with a high-temperature annealing in Ar/H2. XRD patterns, TEM images, XPS spectra and UV-Vis absorption spectra were measured to reveal the crystal structure, morphology and light absorption properties of Au@H-TiO2. Compared to TiO2 and Au@A-TiO2 that is absent of oxygen deficiency, Au@H-TiO2 shows the highest photocatalytic rate for hydrogen evolution. This result could be attributed to enhanced charge-separation efficiency and reduced charge-transfer resistances, as supported by transient photocurrent response and electrochemical impedance spectra. These improvements could be correlated to Ti3+ self-doping and Au modification in Au@H-TiO2. |
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| Keywords: | TiO2 defective structure nanomaterials photocatalytic hydrogen generation |
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