2022
DOI: 10.1016/j.cej.2022.137804
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Current trends on In2O3 based heterojunction photocatalytic systems in photocatalytic application

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Cited by 103 publications
(28 citation statements)
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“…29,30 Because of its superior electrical conductivity, excellent photovoltaic properties, and low toxicity, indium oxide (In 2 O 3 ), an n-type semiconductor material with a suitable band gap (∼2.8 eV), has been frequently employed in photocatalysis. 31,32 The small size of In 2 O 3 nanoparticles tends to have a larger specific surface area, which facilitates the modulation of adsorption capacity and the exposure of active sites. 33…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…29,30 Because of its superior electrical conductivity, excellent photovoltaic properties, and low toxicity, indium oxide (In 2 O 3 ), an n-type semiconductor material with a suitable band gap (∼2.8 eV), has been frequently employed in photocatalysis. 31,32 The small size of In 2 O 3 nanoparticles tends to have a larger specific surface area, which facilitates the modulation of adsorption capacity and the exposure of active sites. 33…”
Section: Introductionmentioning
confidence: 99%
“…Metal oxide nanomaterials have excellent catalytic properties and affinity for pollutants, and they are frequently coupled with other catalysts to improve their pollutant degradation capabilities. , Because of its superior electrical conductivity, excellent photovoltaic properties, and low toxicity, indium oxide (In 2 O 3 ), an n-type semiconductor material with a suitable band gap (∼2.8 eV), has been frequently employed in photocatalysis. , The small size of In 2 O 3 nanoparticles tends to have a larger specific surface area, which facilitates the modulation of adsorption capacity and the exposure of active sites . Furthermore, In 2 O 3 has larger conduction band (CB) and valence band (VB) potentials than Bi 4 O 5 Br 2 , demonstrating the potential to form an S-scheme heterojunction with Bi 4 O 5 Br 2.…”
Section: Introductionmentioning
confidence: 99%
“…The above-mentioned experiments show that the photocatalytic activity order for the organic reaction is compound 1 > compound 2 ≈ compound 3 . Considering that three compounds have similar polyoxotungstate-based 3D silver cluster–organic frameworks, the difference in photocatalytic activity may be related to their energy band structure, which usually plays a decisive role in the photocatalytic performance of photocatalysts. , As shown in Figures d and a, the conduction band (CB) potential (−0.77 V vs NHE) of compound 1 is more negative than that of compounds 2 and 3 (−0.12 V vs NHE) and also negative than E (O 2 /O 2 •– ) (−0.33 V vs NHE) and E (H 2 O 2 /O 2 ) (+0.68 V vs NHE), which reveals that the photogenerated electrons on compound 1 can reduce O 2 molecules in air to superoxide radicals O 2 •– and H 2 O 2 upon UV irradiation, , while compounds 2 and 3 only oxidized O 2 molecules to H 2 O 2 species. Moreover, the VB potentials of compounds 1 – 3 are higher than those of H 2 O/O 2 ( E (H 2 O/O 2 ) = +1.23 V vs NHE) and H 2 O 2 /O 2 •– ( E (H 2 O 2 /O 2 •– ) = +1.44 V vs NHE) .…”
Section: Results and Discussionmentioning
confidence: 99%
“…Considering that three compounds have similar polyoxotungstate-based 3D silver cluster−organic frameworks, the difference in photocatalytic activity may be related to their energy band structure, which usually plays a decisive role in the photocatalytic performance of photocatalysts. 54,55 As shown in Figures 4d and 6a, the conduction band (CB) potential (−0.77 V vs NHE) of compound 1 is more negative than that of compounds 2 and 3 (−0.12 V vs NHE) and also negative than E(O 2 /O 2 58 This result demonstrated that it is theoretically possible for a photogenerated hole to oxidize H 2 O to O 2 , which is then reduced to H 2 O 2 and O 2…”
Section: Photocatalysis Propertiesmentioning
confidence: 99%
“…Furthermore, post-transition metals possess greater bond covalency and directional bonding, influencing their coordination chemistry and thus heterogeneous interactions at the semiconductor–solution interface. Indeed, In 2 O 3 has been explored for photocatalytic carbon dioxide reduction, hydrogen production, and pollutant degradation, while Ga 2 O 3 has been observed to catalyze water splitting and volatile organic compound degradation . These examples utilizing M 3+ -containing semiconductors provide further support in exploring trivalent bismuth metal oxides.…”
Section: Introductionmentioning
confidence: 99%