In the current work, zinc aluminate and bismuth doped zinc aluminate (ZnAl2-xBixO4, x = 0, 0.05, 0.1) spinel oxide nanoparticles were synthesized by co-precipitation method. The obtained samples were characterized by powder XRD, FT-IR, DRS, SEM-EDX and BET. Photocatalytic degradation of zinc aluminate and bismuth doped zinc aluminate nanoparticles were investigated using methylene blue as a model pollutant under UV light. 98. 28% of photodegradation of methylene blue was achieved in 150 min using the bismuth doped zinc aluminate catalyst. The reduction of 4-nitrophenol to 4-aminophenol was completed within 7 s using bismuth doped catalyst. © 2017 Elsevier Ltd

Sumathi S

Department of Chemistry

School of Advanced Sciences

Vellore Campus

Kirankumar V.S

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Materials Research Bulletin

Cerium-doped copper aluminate (CuAl2- xCexO4, x = 0, 0.01, 0.03, and 0.05) photo-catalysts were synthesized by combustion route with an aim to improve the photocatalytic activity of copper aluminate under visible-light. The synthesized compounds were analyzed by standard analytical instruments such as powder XRD, FT-IR, UV-DRS, SEM-EDAX, and HR-TEM. XRD results explained that rising cerium ion concentration from 0 to 0.03, increase the lattice parameter and decreases the average crystalline size. The band gap energy of copper aluminate (1.81 eV) was reduced to 1.43 eV by introducing the cerium ion. The photodegradation performance of the synthesized compounds was recorded by studying the degradation of organic pollutants such as Rhodamine B and Methylene blue dyes under visible light. Cerium doped copper aluminate (x = 0.03) nanoparticles shows 98% degradation of RhB and 96% degradation of MB after 180 and 90 min than the doped (x = 0.01, 0.05) and undoped copper aluminate (x = 0) nanoparticles, respectively. The reactive species h+ and ·O2 ‒ plays the most important role in the photocatalytic degradation. The photodegradation of colorless pollutant Bisphenol A was carried out under UV-light. Among the series of synthesized compounds, CuAl1.97Ce0.03O4 nanoparticles were found to be the more active photo-catalyst for the degradation of Rhodamine B and Methylene blue. © 2018 Taiwan Institute of Chemical Engineers

Journal of the Taiwan Institute of Chemical Engineers

Photocatalytic performance of cerium doped copper aluminate nanoparticles under visible light irradiation

Nickel aluminate (NiAl2O4) and doped nickel aluminate (Ni1-xMxAl2O4; M = Mg, Zn, Cu; x = 0.1) were prepared by sol-gel method using citric acid. The synthesized compounds were analyzed by various techniques such as powder XRD, FTIR, SEM-EDAX and UV-DRS. The lattice parameter was found to increase with the copper, zinc and magnesium doping in nickel aluminate. The band gap was decreased from 3.0 eV (NiAl2O4) to 2.9 (zinc doped), 2.7 eV (magnesium doped) and increased to 3.1 eV in the case of copper doping. The catalytic study was carried out for a cationic (methylene blue) and an anionic dye (methyl orange). The percentage degradation of methyl orange using Zn0.1Ni0.9Al2O4 and Mg0.1Ni0.9Al2O4 was found to be 92% (180 min) and 96% (90 min). 93% (120 min) and 97% (120 min) degradation of methylene blue was observed using zinc doped and magnesium doped nickel aluminate respectively. These results are comparatively higher than its parent analogue (94% (180 min) degradation against methyl orange and 91% (120 min) against methylene blue). Whereas the percentage degradation was found to be less in the case of Cu0.1Ni0.9Al2O4 (83% (180 min) against methyl orange and 90% (120 min) against methylene blue). © 2018 Elsevier Masson SAS

Solid State Sciences

Photocatalytic activity of divalent ion (copper, zinc and magnesium) doped NiAl2O4

Co1-xCuxFe2O4 nanoparticles with x = 0 and 0.5 were synthesized through the combustion method. The as-made materials are face centered-cubic close-packed spinel structures. The characterization techniques such as powder XRD, FTIR, UV-DRS and SEM studies collectively verified that the formed products are cobalt ferrite and copper substituted cobalt ferrite nanoparticles. In addition, the mean crystalline size, lattice parameter and band gap energy of nanoparticles are calculated. The photocatalytic activity of the obtained Co1-xCuxFe2O4 spinel nanoparticles is evaluated by monitoring the degradation of congo red under visible light irradiation. © Published under licence by IOP Publishing Ltd.

Fulltext

IOP Conference Series: Materials Science and Engineering

Photocatalytic degradation of congo red using copper substituted cobalt ferrite

Nanocrystalline N-doped ZnSb2O6 is synthesized in a single step in single phasic form by a novel combustion method.

RSC Adv.

Enhanced photocatalytic activity of nanocrystalline N-doped ZnSb2O6: role of N doping, cation ordering, particle size and crystallinity

Applied Catalysis B: Environmental

Ultrathin graphitic C3N4 nanosheet as a promising visible-light-activated support for boosting photoelectrocatalytic methanol oxidation

Noble-metal-free hetero-structural CdS/Nb2O5/N-doped-graphene ternary photocatalytic system as visible-light-driven photocatalyst for hydrogen evolution

Journal	Data powered by TypesetMaterials Research Bulletin
Publisher	Data powered by TypesetElsevier BV
ISSN	0025-5408
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