| 第 48 卷第 1 期 |  | Vol. 48 No. 1 | | 2018 年 2 月 | Feb 2018 |
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所屬欄目：功能材料
Ag納米粒子改性MoS2／暴露（001）面TiO2二維復合材料及其可見(jiàn)光催化性能研究 |
| 王 芬，沈嘉琪，陳麗宇，李晉波*
（長(cháng)沙學(xué)院 生物與環(huán)境工程學(xué)院，湖南 長(cháng)沙 410082） |
| 摘 要：以鈦酸四丁酯、氫氟酸、鉬酸鈉、硫代乙酰胺和硝酸銀為原料，利用水熱法和光沉積法成功在二硫化鉬（MoS2）／暴露（001）面TiO2二維復合材料上沉積了銀納米粒子（Ag）。采用X射線(xiàn)衍射（XRD）、掃描電子顯微鏡（SEM）、X射線(xiàn)光電子能譜（XPS）、紫外可見(jiàn)吸收（UV-vis）對樣品的相組成、表面形貌、表面元素組成和光響應范圍進(jìn)行表征測試，并在可見(jiàn)光下考察了復合材料降解亞甲基蘭（MB）的光催化性能。結果表明粒徑約為20～30 nm的Ag顆粒成功負載在MoS2／暴露（001）面的TiO2納米片上（MT-001），Ag納米粒子的等離子共振效應有效的改善了MT-001納米片的光催化性能，改性后復合材料對MB的最佳降解率為89.72%，為同等條件下純TiO2納米片的1.55倍。 |
| 關(guān)鍵詞：等離子共振；Ag／MoS2／暴露（001）面TiO2；可見(jiàn)光催化 |
| 中圖分類(lèi)號：O643 文獻標識碼：A 文章編號：1009-9212（2018）02-0057-04 |
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| Ag Nanoparticle Modified MoS2@TiO2(001) Ternary Composite for Enhanced Visible-light Driven Photocatalytic Activity |
| WANG Fen, SHENG Jia-qi, CHEN Li-yu, LI Jin-bo*
(Changsha Institute Department of biology and environment,Changsha 410082, China) |
| Abstract：An Ag nanoparticle-modified MoS2@TiO2 (001) ternary composite (Ag-MT-001) was successfully fabricated by ahydrothermal and photodeposition methods. The microstructure and composition of the composite materials were characterized by XRD, TEM and XPS. TEM results showed that the composite consisted of well-defined sheet-shaped structures with a rectangular outline and a length of approximately 80~150 nm. Ag nanoparticles (20~30 nm) were dispersed on the surface of TiO2 nanosheets with (001) facets (T-001). XPS results demonstrated that the MoS2 coated on the surface of T-001 and AgNO3 was successfully reduced to Ag nanoparticles. The UV-visible spectrum of the ternary composite revealed strong absorption in the visible light region, a result that was attributed to the surface plasmon resonance (SPR) of Ag nanoparticles and MoS2 in the composites. The photocatalytic activity of the ternary composite was estimated by the photocatalytic degradation of methylene blue (MB) under visible-light irradiation. Ag-MT-001 exhibited high performance. |
| Key words：plasmon resonance; MoS2@TiO2 (001); visible light catalysis |
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基金項目：2017年湖南省大學(xué)生研究性學(xué)習與創(chuàng )新實(shí)驗計劃項目，長(cháng)沙市科技計劃項目（K1705059）。
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作者簡(jiǎn)介：王 芬（1997-），男，湖南湘潭人，研究方向：納米材料制備（E-mail: 876774932@qq.com）。
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聯(lián) 系 人：李晉波，講師，研究方向：納米材料制備，光催化（E-mail: 38455837@qq.com）。
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收稿日期：2018-02-19
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