Surface active sites of Y-doped Zn(O,S) for chemisorption and hydrogenation of azobenzene and nitroaromatic compounds under light via self-generated proton

Shuwanto, Hardy; Abdullah, Hairus; Kuo, Dong‐Hau; Gultom, Noto Susanto

doi:10.1016/j.apsusc.2021.149508

Cited by 23 publications

(4 citation statements)

References 56 publications

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“…Obviously, the H 2 O molecule adsorbed on the V O surface of BiCeOS can be distorted and lose its bond symmetry with one O–H bond stretching to a large spacing of 1.036 Å at one side to dissociate the H 2 O molecule toward a OH* intermediate. 22,87,88 For further verification, C dl was used to examine the EASA of BiCeOS with poor and rich V O . The C dl result is displayed in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Fig. 6a-d shows the Bi 4f, S 2p, Ce 3d, and O 1s XPS spectra of BiCeOS-3 aer 5 runs, respectively, and no signicant changes were observed at peak position or binding energy (eV), peak intensity, peak separation, chemical compositions (Table S1 †), and 22,87,88 For further verication, C dl was used to examine the EASA of BiCeOS with poor and rich V O . The C dl result is displayed in Fig.…”

Section: Photocatalytic Pferformance and Stabilitymentioning

confidence: 99%

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Initiating highly efficient (Bi,Ce)₂(O,S)_3−xoxysulfide catalysts with rich oxygen vacancies for hydrogen evolutionviaadjusting valence band configuration

Chen

Kuo

et al. 2023

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

Section: Photocatalytic Pferformance and Stabilitymentioning

confidence: 99%

Initiating highly efficient (Bi,Ce)₂(O,S)_3−xoxysulfide catalysts with rich oxygen vacancies for hydrogen evolutionviaadjusting valence band configuration

Chen

Kuo

et al. 2023

J. Mater. Chem. A

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“…Besides the photoexcitation process, the adsorption kinetic of water molecules on the photoanode is also crucial. The adsorption can be enhanced when the oxygen vacancy (V O 2 + ) sites are available on material surfaces, as shown in many previous works. − On the basis of the XPS result, BF-5 photoanode exhibited 10.95% V O , which is propitious to the water adsorption during the PEC reaction. The details of water oxidation reaction mechanism without and with Bi dopant on α-Fe 2 O 3 are indicated in Figure a, b, respectively.…”

Section: Resultsmentioning

confidence: 63%

Nanostructuring Bi-Doped α-Fe₂O₃ Thin-Layer Photoanode to Advance the Water Oxidation Performance

Shuwanto

Abdullah

Kuo

2022

ACS Appl. Energy Mater.

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A nanograin α-Fe2O3 thin-film photoanode with Bi dopant was successfully synthesized with a simple electrodeposition method on indium tin oxide (ITO) glass and annealing at 550 °C for 3 h. The thin-film photoanodes were characterized and evaluated for their capabilities in oxidizing water. Incorporating Bi dopant into the photoanode could cathodically shift the onset potential to 0.43 V at 0.6 mA/cm2 under a 150 W solar light illumination. Interestingly, the incident photon-to-electron (IPCE) and applied bias photon-to-current efficiency (ABPE) could achieve 22.2 and 0.63%, respectively. On the basis of the experimental data, the low onset potential is notably supported by the nanosized α-Fe2O3 with substitutional defects of Bife + and oxygen vacancy (VO) to overcome the limitation of natural α-Fe2O3. A density functional theory (DFT) calculation also indicated that the water adsorption step on the modified 5%-bismuth-doped Fe2O3 (BF-5) photoanode was thermodynamically favorable compared to the pristine α-Fe2O3. As a result, the BF-5 photoanode could support the water-splitting process close to a stoichiometric ratio with Pt as the cathode. This work demonstrated an exciting strategy to overcome the short diffusion length of α-Fe2O3 in separating excitons during photoreaction.

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“…Scheme 58 Au@OC1 R -catalyzed reduction of nitroarenes to azo compounds Shuwanto et al 117 have prepared yttrium-doped zinc oxysulfide (Y-Zn (O, S)) solid solution with hydrogen-evolution reaction and Y-doped Zn (O, S) nano catalysts (Scheme 59). The synthesized catalyst was then fabricated, characterized, and applied for photocatalytic reduction of nitro compounds for the synthesis of azoarenes in ethanol as sacrificial agent.…”

Section: Reduction Of Nitro Compounds To Azo Compoundsmentioning

confidence: 99%

Recent Developments in Photocatalytic Reduction of Nitro Compounds to Valuable Scaffolds

Aggarwal

Bala

Malik

et al. 2023

Synlett

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The reduction of nitro compounds is one of the fundamental organic transformations and ascertain wide applicability in industrial chemistry, synthesis of valuable scaffolds, fine chemical synthesis as well as environmental applicability for decontamination process. The transformation involves the conversion of nitro compounds to valuable scaffolds including amino, nitroso, hydroxyl amines, azo and hydrazo compounds. Conventional approaches for the reduction of nitro compounds involves the environmentally harmful stoichiometric reagents, high boiling reaction media, tedious processes, and harsh reaction conditions with high temperature and pressure. Additionally, the selectivity always remains a serious concern associated with the process due to the possibilities of several stable intermediate formation in the reaction pathway of reduction of nitro compounds. Nitro compounds are also of serious environmental concerns being a part of most harmful and high-priority classes of pollutants mainly released from industrial effluents, agricultural waste, and human sewage. A simple degradation of these pollutants bearing nitro group just removes the pollutants, however, the selective reduction of nitro group to valuable functionalities as mentioned above provides the industrially important scaffolds. Herein, the present review article is focused on the recent developments in the photocatalytic reduction of nitro compounds to valuable scaffolds.

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Surface active sites of Y-doped Zn(O,S) for chemisorption and hydrogenation of azobenzene and nitroaromatic compounds under light via self-generated proton

Cited by 23 publications

References 56 publications

Initiating highly efficient (Bi,Ce)₂(O,S)_3−xoxysulfide catalysts with rich oxygen vacancies for hydrogen evolutionviaadjusting valence band configuration

Initiating highly efficient (Bi,Ce)₂(O,S)_3−xoxysulfide catalysts with rich oxygen vacancies for hydrogen evolutionviaadjusting valence band configuration

Nanostructuring Bi-Doped α-Fe₂O₃ Thin-Layer Photoanode to Advance the Water Oxidation Performance

Recent Developments in Photocatalytic Reduction of Nitro Compounds to Valuable Scaffolds

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Surface active sites of Y-doped Zn(O,S) for chemisorption and hydrogenation of azobenzene and nitroaromatic compounds under light via self-generated proton

Cited by 23 publications

References 56 publications

Initiating highly efficient (Bi,Ce)2(O,S)3−xoxysulfide catalysts with rich oxygen vacancies for hydrogen evolutionviaadjusting valence band configuration

Initiating highly efficient (Bi,Ce)2(O,S)3−xoxysulfide catalysts with rich oxygen vacancies for hydrogen evolutionviaadjusting valence band configuration

Nanostructuring Bi-Doped α-Fe2O3 Thin-Layer Photoanode to Advance the Water Oxidation Performance

Recent Developments in Photocatalytic Reduction of Nitro Compounds to Valuable Scaffolds

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Initiating highly efficient (Bi,Ce)₂(O,S)_3−xoxysulfide catalysts with rich oxygen vacancies for hydrogen evolutionviaadjusting valence band configuration

Initiating highly efficient (Bi,Ce)₂(O,S)_3−xoxysulfide catalysts with rich oxygen vacancies for hydrogen evolutionviaadjusting valence band configuration

Nanostructuring Bi-Doped α-Fe₂O₃ Thin-Layer Photoanode to Advance the Water Oxidation Performance