A simple mechanical mixing method for preparation of visible-light-sensitive NiO-CaO composite photocatalysts with high photocatalytic activity
Creators
- 1. College of Environment and Chemical Engineering and Tianjin Key Laboratory of Fiber Modification and Functional Fiber, Tianjin Polytechnic University, Tianjin 300160 (China)
- 2. College of Science, Tianjin University of Science and Technology, Tianjin 300457 (China)
Description
Composite photocatalysts composed of NiO and CaO have been prepared via mechanically mixing of the two powders. The as-synthesized NiO-CaO products were characterized by X-ray diffraction (XRD) and UV-vis spectrometry. The experimental results showed that the absorption wavelength range of the mixed NiO-CaO sample was notably extended towards the visible-light region (400-450 nm). Photocatalytic activity of the NiO-CaO composite was evaluated based on the decomposition of methylene blue under visible-light irradiation. The effects of CaO doping and the duration of heat treatment on the durability of the NiO-CaO products have been investigated in detail. Factors influencing photocatalytic activity and the mechanism of photocatalysis were also addressed.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jhazmat.2009.09.088Additional details
Identifiers
- DOI
- 10.1016/j.jhazmat.2009.09.088;
- PII
- S0304-3894(09)01549-0;
Publishing Information
- Journal Title
- Journal of Hazardous Materials
- Journal Volume
- 174
- Journal Issue
- 1-3
- Journal Page Range
- p. 563-566
- ISSN
- 0304-3894
- CODEN
- JHMAD9
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 44005984
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ABSORPTION; CALCIUM OXIDES; DECOMPOSITION; HEAT TREATMENTS; IRRADIATION; METHYLENE BLUE; NICKEL OXIDES; PHOTOCATALYSIS; POWDERS; SPECTROSCOPY; VISIBLE RADIATION; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; AMINES; ANTI-INFECTIVE AGENTS; ANTIMICROBIAL AGENTS; AZINES; CALCIUM COMPOUNDS; CATALYSIS; CHALCOGENIDES; CHEMICAL REACTIONS; CHLORIDES; CHLORINE COMPOUNDS; COHERENT SCATTERING; DIFFRACTION; DRUGS; ELECTROMAGNETIC RADIATION; HALIDES; HALOGEN COMPOUNDS; HETEROCYCLIC COMPOUNDS; NICKEL COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHENOTHIAZINES; RADIATIONS; SCATTERING; SORPTION; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.