Hydrothermal preparation of Ag-TiO2 nanostructures with exposed {001}/{101} facets for enhancing visible light photocatalytic activity |
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| Affiliation: | 1. Environment Functional Materials Division, Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China;2. Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;1. Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad 44000, Pakistan;2. Beijing National Center for Electron Microscopy, Laboratory of Advanced Materials and The State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;3. Centre for High Energy Physics, University of the Punjab, Lahore, Pakistan;4. Allama Iqbal Open University, Islamabad 44000, Pakistan;5. Materials Division, PINSTECH, Islamabad 44000, Pakistan;1. Department of BIN Convergence Technology, Chonbuk National University, Jeonju 561-756, Republic of Korea;2. Department of Chemistry, Inha University, 100 Inharo, Incheon 402-751, Republic of Korea;3. Department of Chemistry (Affiliated to Tribhuvan University), Kailali Multiple Campus, Dhangadhi, Kailali, Nepal;4. Department of Organic Materials and Fiber Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea |
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| Abstract: | Nano-composite materials of Ag nanoparticles dispersed TiO2 nanocubes with exposed {001}/{101} crystal faces were fabricated mainly via a flexible one-step method of hydrothermal treatment with different content of Ag from 1 up to 3 mol%. Prepared photocatalysts were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscopy, UV–vis absorption spectroscopy, X-ray photoelectron spectroscopy and Raman spectroscopy. These analysis was carried out for understanding the contribution of different content of silver for enhancing the photocatalytic activity of TiO2 nanocubes. Prepared silver nanoparticles had small particle size and grafted to the {101} crystal face of TiO2 with the role of template control agent and linking agent. The photocatalytic performance of Ag-TiO2 nanocubes were researched via Rhodamine B dye removal under visible light irradiation ( ≧420 nm). Ag-TiO2 composite materials with the content of 2 mol% Ag showed the best photocatalytic activity for degradation of Rhodamine B, which was five times more than bare TiO2 and associated with the localized surface plasmon resonance (LSPR) propelled effect. The mechanism by which silver enhanced the photocatalytic activity of TiO2 was also demonstrated. |
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| Keywords: | Hydrothermal {001}/{101}facets LSPR Photodegradation |
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