Crystalline metallic Au nanoparticle-loaded α-Bi(2)O(3) microrods for improved photocatalysis.
Summary of "Crystalline metallic Au nanoparticle-loaded α-Bi(2)O(3) microrods for improved photocatalysis."
Crystalline metallic Au nanoparticles were loaded on α-Bi(2)O(3) microrods (Au/α-Bi(2)O(3)) using an Au deposition-precipitation method. The prepared samples were characterized by scanning electron and transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and UV-vis diffuse reflectance spectroscopy. Upon visible light irradiation, the Au/α-Bi(2)O(3) exhibits much higher photocatalytic activities than the pure α-Bi(2)O(3) for the degradation of Rhodamine B and 2,4-dichlorophenol in aqueous solution. The role of the Au and the paths of electron transport in the photocatalysis of the Au/α-Bi(2)O(3) were investigated and discussed in detail based on the analysis of the photo-generated hydroxyl radicals (˙OH) and hydrogen peroxide (H(2)O(2)) in the visible light irradiated suspension of pure α-Bi(2)O(3) and Au/α-Bi(2)O(3). The result reveals that the Au loaded on α-Bi(2)O(3) plays a critical role in the separation of the electron and hole pairs by accumulating the electrons from the excited α-Bi(2)O(3), which is responsible for the enhanced photocatalytic activity.
Affiliation
Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China. jlin@chem.ruc.edu.cn.
Journal Details
This article was published in the following journal.
Name: Physical chemistry chemical physics : PCCP
ISSN: 1463-9084
Pages: 12114-21
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22868636
- DOI: http://dx.doi.org/10.1039/c2cp42165h
Medical and Biotech [MESH] Definitions
Alloys
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.
Dental Alloys
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions for use in restorative or prosthetic dentistry.
Lens Nucleus, Crystalline
The core of the crystalline lens, surrounded by the cortex.
Film Dosimetry
Use of a device (film badge) for measuring exposure of individuals to radiation. It is usually made of metal, plastic, or paper and loaded with one or more pieces of x-ray film.
Lens Cortex, Crystalline
The portion of the crystalline lens surrounding the nucleus and bound anteriorly by the epithelium and posteriorly by the capsule. It contains lens fibers and amorphous, intercellular substance.
PubMed Articles
Enhancement of the second-harmonic generation in a quantum dot-metallic nanoparticle hybrid system.
We have investigated the second-harmonic generation (SHG) and dipole-dipole interaction in a quantum dot and metallic nanoparticle hybrid system. A strong probe field is applied to create two-photon a...
To develop a novel itraconazole-loaded solid dispersion without crystalline change with improved bioavailability, various itraconazole-loaded solid dispersions were prepared with water, polyvinylpyrro...
To develop a novel flurbiprofen-loaded solid dispersion without crystalline change, various flurbiprofen-loaded solid dispersions were prepared with water, sodium carboxylmethyl cellulose (Na-CMC), an...
Novel valsartan-loaded solid dispersion with enhanced bioavailability and no crystalline changes.
With the aim of developing a novel valsartan-loaded solid dispersion with enhanced bioavailability and no crystalline changes, various valsartan-loaded solid dispersions were prepared with water, hydr...
The spontaneous reaction between microrods of an organic semiconductor molecule, copper 7,7,8,8-tetracyanoquinodimethane (CuTCNQ) with [AuBr(4)](-) ions in an aqueous environment is reported. The reac...
Clinical Trials
Pilot Study to Validate Metallic Markers for Image Guided Radiation Therapy for Breast Cancer Tx
The purpose of this study is to test metallic markers in the breast tissue after breast conserving surgery and to observe the metallic markers' stability in the breast for use as tumor bed...
Comparison of Three Laryngoscope Blades for Orotracheal Intubation in the Operating Room
The purpose of this study is to determinate if there is a difference in performance provided by three laryngoscope blades: plastic single use, metallic single use and metallic reusable bla...
Motion Analysis of Sit-to-Stand Movements in Children With Spastic Diplegia
The purpose of this study is to compare movement variations before and after the loaded training, with kinematics, kinetics, and electromyography, in children with spastic diplegia and to...
RATIONALE: Drugs used in chemotherapy, such as paclitaxel albumin-stabilized nanoparticle formulation, work in different ways to stop the growth of tumor cells, either by killing the cells...
This study is a multicentre, open label, non-randomized phase I study. The main objectives of the study are to determine the pharmacokinetic profile of the drug at different dose levels in...
