In this paper, zeolite supported-nano TiO2 photocatalytic composites were synthesized by an easily-operated solid diffusion process, in which zeolite was used as the support matrix. And the microstructures, morphologies and photocatalytic properties of the zeolite supported-nano TiO2 composites were characterized and analyzed by scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, UV-visible spectroscopy, fluorescence spectroscopy and methylene blue degradation tests. The results showed that zeolite matrix reduced agglomeration of nano-TiO2 and enhanced the absorption ability within the UV-Vis range, consequently increased the photocatalytic activity of the composites. Meanwhile, the influences of TiO2/zeolite proportion on their photocatalytic performances were explored, which indicated that 90 wt% TiO2/zeolite had optimal photocatalytic capability and stable properties.
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http://dx.doi.org/10.1166/jnn.2018.15403 | DOI Listing |
Chemosphere
March 2021
Department of Environmental Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea. Electronic address:
Heavy metals contamination of water is one of the environmental issue globally. Thus prepared fly ash-based zeolite (FZA)-supported nano zerovalent iron and nickel (nZVI/Ni@FZA) bimetallic composite from low-cost fly ash waste for the potential treatment of anion (Cr(VI) and cation Cu(II)) heavy metals from industrial effluents at pH 3 and 5, respectively in this study. The systematic interaction between FZA and nZVI/Ni and the adsorptive removal mechanism was studied.
View Article and Find Full Text PDFJ Nanosci Nanotechnol
August 2018
Changjiang River Scientific Research Institute, Wuhan 430010, P. R. China; Research Center on National Dam Safety Engineering Technology, Wuhan 430010, P. R. China; Research Center of Water Engineer Security and Disease Prevent, Ministry of Water Resources, Wuhan 430010, P. R. China.
In this paper, zeolite supported-nano TiO2 photocatalytic composites were synthesized by an easily-operated solid diffusion process, in which zeolite was used as the support matrix. And the microstructures, morphologies and photocatalytic properties of the zeolite supported-nano TiO2 composites were characterized and analyzed by scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, UV-visible spectroscopy, fluorescence spectroscopy and methylene blue degradation tests. The results showed that zeolite matrix reduced agglomeration of nano-TiO2 and enhanced the absorption ability within the UV-Vis range, consequently increased the photocatalytic activity of the composites.
View Article and Find Full Text PDFAppl Catal A Gen
February 2017
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China.
Zeolite supported nano iron-nickel bimetallic composite (Z-nZVI-Ni) was prepared using a liquid-phase reduction process. The corresponding surface morphologies and physico-chemical properties of the Z-nZVI-Ni composite were determined using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Energy dispersive X-ray spectra (EDS), Brunauer Emmett Teller (BET) adsorption, wide angle X-ray diffractometry (WA-XRD), and Fourier transform infrared spectroscopy (FTIR). The results indicated high dispersion of iron and nickel nano particles on the zeolite sheet with an enhanced surface area.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
July 2016
Department of Energy, Building and Environment, Mälardalen University, Västerås, 72123, Sweden.
Chlorinated organic solvents (COSs) are extensively detected in contaminated soil and groundwater that pose long-term threats to human life and environment. In order to degrade COSs effectively, a novel catalytic composite of natural zeolite-supported nano zero valent iron (Z-nZVI) was synthesized in this study. The performance of Z-nZVI-catalyzed sodium percarbonate (SPC) in a heterogeneous Fenton-like system was investigated for the degradation of COSs such as 1,1,1-trichloroethane (1,1,1-TCA) and trichloroethylene (TCE).
View Article and Find Full Text PDFJ Hazard Mater
February 2010
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, Penang, Malaysia.
Photocatalytic degradation of phenol was investigated using the supported nano-TiO(2)/ZSM-5/silica gel (SNTZS) as a photocatalyst in a batch reactor. The prepared photocatalyst was characterized using XRD, TEM, FT-IR and BET surface area analysis. The synthesized photocatalyst composition was developed using nano-TiO(2) as the photoactive component and zeolite (ZSM-5) as the adsorbents, all supported on silica gel using colloidal silica gel binder.
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