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Progress and Challenges of Semiconducting Materials for Solar Photocatalysis
Published in Inamuddin, Mohd Imran Ahamed, Rajender Boddula, Tariq Altalhi, Optical Properties and Applications of Semiconductors, 2023
Mridula Guin, Tanaya Kundu, Vinay K. Verma, Nakshatra Bahadur Singh
Bismuth oxide is low-energy band gap (2.8 eV) material possessing high electrical conductivity. It has high potential in photocatalytic application because of its ability to absorb in the visible range. It has found wide application in photoelectric conversion, electrolyte material, superconducting material etc.
Bismuth (III) oxide decorated graphene oxide filled epoxy nanocomposites: thermo-mechanical and photon attenuation properties
Published in Advanced Composite Materials, 2023
Srilakshmi Prabhu, S. G. Bubbly, S. B. Gudennavar
Graphene oxide (GO), one of the most important derivatives of graphene, presents a class of ultra-large organic molecules with 2D carbon mesh demonstrating unique opto-electronic and chemical properties. Recently, anchoring of metal oxides onto GO sheets has been employed to impart novel functionalities to the resultant composites for developing gas sensing, energy storage, optoelectronic and photocatalytic dye degradation properties [12–15]. The ionisable oxygenic functional groups such as epoxide (C-O), carbonyl (-C = O), carboxyl (-COOH) and hydroxyl (-OH) on GO act as binding sites to facilitate anchoring of metal oxide particles on its surface through coordination and electrostatic interactions [11,16,17]. Among the high Z metal oxides, bismuth oxide (Bi2O3) is most appealing due to its low cost, good thermo-chemical stability, high structural stability and non-carcinogenicity. Above all, both GO and Bi2O3 have high biocompatibility, thereby making them most suited for safe-use in biomedical applications [14]. Several researchers have extensively studied the use of graphene oxide/bismuth oxide hybrid composites for electrocatalytic reduction of CO2, waste water treatment and supercapacitor applications [14–17]. Anchoring narrow band gap Bi2O3 particles on GO was found to decrease the rate of recombination of photon generated electron-hole pair, thereby widening its spectral response [18].
Efficient degradation of amoxicillin using Bi2O3/Fe synthesized by microwave-assisted precipitation method
Published in Cogent Engineering, 2022
Bella Aprimanti Utami, Heri Sutanto, Ilham Alkian, Fatkhiyatus Sa’Adah, Eko Hidayanto
Several alternatives have been carried out to remove these compounds, including reverse osmosis, adsorption, and advanced oxidation technologies such as fenton reaction, ozonation, and photocatalytic technology (Benitez et al., 2011). Photocatalytic shows promising prospects among these methods due to its sustainability and environmental friendliness (Wang et al., 2018). Bismuth oxide (Bi2O3) is a photocatalyst material that is of interest to researchers because of its high redox inversion, environmental friendliness, thermal stability, and energy bandgap between 2.58 and 2.85 eV, which shows a response to visible light (Basith et al., 2018). The phase (monoclinic) Bi2O3 has semiconductor properties, is stable at low temperatures, and is more energy-efficient in the synthesis process (Gadhi et al., 2016). However, photon-induced electron–hole pairs have poor light utilization and fast recombination rates limiting photocatalytic activity (Zhou et al., 2019).