Gold nanorod-CdS-gold nanoparticle composite photocatalyst and application thereof

A technology of gold nanoparticles and gold nanorods, which is applied in the gold nanorod-CdS-gold nanoparticle composite photocatalyst and its application field, can solve the problem that the influence of the catalytic performance of the composite photocatalyst has not been comprehensively studied, and achieve the production cost Low, simple production process, high photocatalytic activity and selectivity

Inactive Publication Date: 2016-03-23
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although it has been previously reported that semiconductor CdS-Au composites can exhibit excellent photocatalytic performance under ultraviolet

Method used

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  • Gold nanorod-CdS-gold nanoparticle composite photocatalyst and application thereof
  • Gold nanorod-CdS-gold nanoparticle composite photocatalyst and application thereof
  • Gold nanorod-CdS-gold nanoparticle composite photocatalyst and application thereof

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Embodiment 1

[0039] 1.1 Reagents and instruments

[0040] Cetyltrimethylammonium bromide (CTAB), silver nitrate (AgNO 3 ), sodium borohydride (NaBH 4 ), vitamin C (AA), hydrochloric acid solution (HCl, 37wt%), sodium oleate (NaOL) were purchased from SigmaAldrich Reagent Company; cadmium chloride (CdCl 2 2.5H 2 O), sodium diethyldithiocarbamate (C 5 h 10 wxya 2 ·3H 2 O), ethylenediamine (C 2 h 8 N 2) and mercaptoacetic acid (MAA) were purchased from Sinopharm Chemical Reagent Co., Ltd. The experimental water was deionized water. The main instruments are BrukerD8 X-ray powder diffractometer (German Bruker Company), Cary-5000 UV-Vis-Near Infrared Spectrophotometer (US Varian Company), G2F20S-TWIN Transmission Electron Microscope (US FEI Company), ESCALab250 X-ray Photoelectron Energy Spectrum (Thermo Company of the United States), EdinburghFL / FS900 Fluorescence Spectrophotometer (Edinburgh Instruments Company of the United Kingdom), PrecisionPARC Electrochemical Workstation (Amete...

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Abstract

The invention discloses a simply synthesized gold nanorod-CdS-gold nanoparticle composite photocatalyst with visible and near-infrared light response. The photocatalyst is used for organic synthesis in a water phase and prepared from two Au nanostructures (gold nanorods and gold nanoparticles) different in morphology and one-dimensional semiconductor CdS nanowires by a simple electrostatic self-assembly method. For the first time, the simply synthesized gold nanorod-CdS-gold nanoparticle composite photocatalyst is used for photocatalysis in the water phase to realize selective reduction for substitution of nitrobenzene. The photocatalyst has high catalysis efficiency and high selectivity. In addition, the preparation process is simple, selective reduction for substitution of the nitrobenzene is realized by taking the visible and near-infrared light as driving energy, water as a solvent and nitrogen as a shielding gas, and sustainable development of environment and energy is benefited.

Description

technical field [0001] The invention belongs to the field of photocatalyst preparation and sustainable development of environment and energy, and specifically relates to a visible-near-infrared photoresponsive gold nanorod-CdS-gold nanoparticle composite photocatalyst and its application. Background technique [0002] The direct conversion of solar energy into chemical energy through artificial photosynthesis provides a green and environmentally friendly way to solve the energy and environmental crisis. The core issue of this advanced technology is to design efficient catalysts to maximize the absorption of sunlight to generate a large number of photogenerated carriers to drive redox reactions. However, most conventional semiconductor (TiO2, ZnO, CdS) catalysts have the following disadvantages: high recombination rate of electron-hole pairs, low quantum efficiency and solar energy utilization. The aforementioned drawbacks severely hamper the photocatalytic performance and p...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J35/00C07C209/36C07C211/51C07C213/02C07C215/76C07C211/52C07C211/47C07C217/84
CPCB01J27/04B01J35/004B01J35/0046C07C209/325C07C213/02C07C211/51C07C215/76C07C211/52C07C211/47C07C217/84
Inventor 徐艺军韩创
Owner FUZHOU UNIV
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