Journal ArticleDOI
α-Bi2O3nanorods: synthesis, characterization and UV-photocatalytic activity
Ahmed M. Abu-Dief,W. S. Mohamed +1 more
- Vol. 4, Iss: 3, pp 035039
Reads0
Chats0
TLDR
In this paper, a simple one-step hydrothermal route using (water: ethanol) (1:1) as a mixed solvents at optimum conditions was used to synthesize monoclinic bismuth oxide nanorods.Abstract:
In this study, Monoclinic bismuth oxide nanorods (α-Bi2O3 NRs) were successfully synthesized by a simple one-step hydrothermal route using (water: ethanol) (1:1) as a mixed solvents at optimum conditions. The Bi2O3 nano-powder was characterized in detail by different techniques in terms of their structural, morphological, compositional, optical and photocatalytic properties. X-ray diffraction (XRD) analysis indicated that the as-synthesized Bi2O3 NRs exhibited high purity with monoclinic structure (α-Bi2O3) and good crystallinity. The Transmission electron microscope (TEM), Energy dispersive x-ray spectroscopy (EDXS) and Field Emission scanning electron microscope (FE-SEM) analysis clearly confirmed the high purity and the nanorod morphology of the as-synthesized Bi2O3 sample. The optical band gap of α-Bi2O3 NRs was estimated using the UV–Vis diffuse reflectance spectroscopy (UV–Vis DRS) analysis according to the Kubelka–Munk theory. The optical band gap of α-Bi2O3 NRs was found to be 3.55 eV for an indirect allowed transition and 3.63 eV for a direct allowed transition. The Fourier transfer infrared spectroscopy (FTIR) was employed to check the structure as well as to evaluate the phonon vibration modes corresponding to Bi2O3. Photocatalytic activity of α-Bi2O3 NRs was investigated using UV source lamp. The as-synthesized α-Bi2O3 NRs photocatalyst exhibited better performance for degradation and decolorization of Methylene blue (MB) under ultraviolet (UV) irradiation. MB was completely photodegraded after 210 min under UV irradiation using α-Bi2O3 NRs as photocatalyst.read more
Citations
More filters
Journal Article
Nanostructured copper oxide semiconductors : a perspective on materials, synthesis methods and applications
Ahmad Sabirin Zoolfakar,Ahmad Sabirin Zoolfakar,Rozina Abdul Rani,Anthony J. Morfa,Anthony P. O'Mullane,Kourosh Kalantar-zadeh +5 more
TL;DR: In this paper, a review of nanostructured CuxO focusing on their material properties, methods of synthesis and an overview of various applications that have been associated with the nanostructure of the oxides of copper is presented.
Journal ArticleDOI
Recent developments of metal oxide based heterostructures for photocatalytic applications towards environmental remediation
Jayaraman Theerthagiri,Sivaraman Chandrasekaran,Sunitha Salla,V. Elakkiya,Raja Arumugam Senthil,P. Nithyadharseni,Thandavarayan Maiyalagan,Kavin Micheal,A. Ayeshamariam,M. Valan Arasu,Naif Abdullah Al-Dhabi,Hyun-Seok Kim +11 more
TL;DR: In this article, a review of metal oxide-based photocatalytic materials for environmental remediation is presented, focusing on different metal oxide materials under various categories such as ZnO, WO3, Fe2O3 and Bi2O-3.
Journal ArticleDOI
Development and functionalization of magnetic nanoparticles as powerful and green catalysts for organic synthesis
TL;DR: In this article, a review of the very recent main advances in the development of various nano catalytic systems by the immobilization of homogeneous catalysts onto magnetic nanoparticles is presented.
Journal ArticleDOI
Impact of Co2+ Substitution on Microstructure and Magnetic Properties of CoxZn1-xFe2O4 Nanoparticles.
W. S. Mohamed,Meshal Alzaid,Mohammed S. M. Abdelbaky,Zakariae Amghouz,Santiago García-Granda,Ahmed M. Abu-Dief +5 more
TL;DR: It is concluded that replacing Zn2+ ions with Co2- ions changes both the structural and magnetic properties of ZnFe2O4 nanoparticles.
Journal ArticleDOI
Facile synthesis and characterization of novel Gd2O3–CdO binary mixed oxide nanocomposites of highly photocatalytic activity for wastewater remediation under solar illumination
TL;DR: In this paper, a mixture of pure cadmium oxide nanoparticles and mixed gadolinium oxide (Gd2O3)-CdO nanocomposites were synthesized by a facile precipitation technique followed by calcined treatment.
References
More filters
Journal ArticleDOI
Nanobelts of Semiconducting Oxides
TL;DR: The beltlike morphology appears to be a distinctive and common structural characteristic for the family of semiconducting oxides with cations of different valence states and materials of distinct crystallographic structures, which could be an ideal system for fully understanding dimensionally confined transport phenomena in functional oxides.
Journal ArticleDOI
Photocatalytic degradation pathway of methylene blue in water
Ammar Houas,Hinda Lachheb,Hinda Lachheb,Mohamed Ksibi,Elimame Elaloui,Chantal Guillard,Jean-Marie Herrmann +6 more
TL;DR: In this article, the TiO2/UV photocatalytic degradation of methylene blue (MB) has been investigated in aqueous heterogeneous suspensions, and it has been shown that the degradation pathway can be determined by a careful identification of intermediate products, in particular aromatics, whose successive hydroxylations lead to the aromatic ring opening.
Journal ArticleDOI
Low-temperature oxidation of CO catalysed by Co 3 O 4 nanorods
TL;DR: Tricobalt tetraoxide nanorods not only catalyse CO oxidation at temperatures as low as –77 °C but also remain stable in a moist stream of normal feed gas, showing the importance of morphology control in the preparation of base transition-metal oxides as highly efficient oxidation catalysts.
Journal ArticleDOI
Band-gap energy estimation from diffuse reflectance measurements on sol–gel and commercial TiO2: a comparative study
Rosendo López,Ricardo Gómez +1 more
TL;DR: In this article, a comparison of the band gap energy estimated from UV-vis reflectance spectra of TiO2 powders prepared by sol-gel route versus commercial TiO 2 powders, nanopowder, bulk powder and P25 is reported.
Journal ArticleDOI
Photocatalytic degradation of model textile dyes in wastewater using ZnO as semiconductor catalyst
Sampa Chakrabarti,Binay K. Dutta +1 more
TL;DR: The potential of a common semiconductor, ZnO, has been explored as an effective catalyst for the photodegradation of two model dyes: Methylene Blue and Eosin Y and substantial reduction of COD was achieved.
Related Papers (5)
Synthesis, characterization and photocatalysis enhancement of Eu 2 O 3 -ZnO mixed oxide nanoparticles
W. S. Mohamed,Ahmed M. Abu-Dief +1 more