2020
DOI: 10.1016/j.mseb.2020.114630
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The morphology and electrochemical properties of WO3 and Se-WO3 films modified with cobalt-based oxygen evolution catalyst

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Cited by 7 publications
(5 citation statements)
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“…The UV−vis absorption spectra showed that WO 3 , 0.4Co 3 O 4 /WO 3 , and 3CoOOH/WO 3 had almost the same absorption edge at ∼450 nm (Figure S8a). According to the Kubelka−Munk equation, we further plotted (αhν) 2 versus hν from the absorption spectrum and then extrapolated the linear part to the abscissa's axis, obtaining the band gaps of WO 3 , 0.4Co 3 O 4 /WO 3 , and 3CoOOH/WO 3 (Figure S8b). The results indicated that the loading of Co 3 O 4 or CoOOH did not change the band gap of WO 3 (E g ≈ 2.6 eV), being consistent with other reports.…”
Section: Energy and Fuelsmentioning
confidence: 99%
See 1 more Smart Citation
“…The UV−vis absorption spectra showed that WO 3 , 0.4Co 3 O 4 /WO 3 , and 3CoOOH/WO 3 had almost the same absorption edge at ∼450 nm (Figure S8a). According to the Kubelka−Munk equation, we further plotted (αhν) 2 versus hν from the absorption spectrum and then extrapolated the linear part to the abscissa's axis, obtaining the band gaps of WO 3 , 0.4Co 3 O 4 /WO 3 , and 3CoOOH/WO 3 (Figure S8b). The results indicated that the loading of Co 3 O 4 or CoOOH did not change the band gap of WO 3 (E g ≈ 2.6 eV), being consistent with other reports.…”
Section: Energy and Fuelsmentioning
confidence: 99%
“…As one of the most promising green technologies for solar-to-chemical conversion, photocatalytic water splitting has been attracting extensive research interest in recent years. So far, however, it is still a great challenge to explore highly efficient water splitting photocatalysts. Particularly, the oxygen evolution reaction (OER) suffers from interior charge carrier separation/transport and slower kinetics of the four-electron reaction process, , thus being the rate-limiting step of water splitting. Over the past decades, many semiconductors including TiO 2 , ZnO, WO 3 , BiVO 4 , etc.…”
Section: Introductionmentioning
confidence: 99%
“…It is generally known that co-catalysts can offer certain active sites on the photoelectrode’s surface, accelerating the trapping of carriers, making it easier to separate photogenerated electron-hole pairs, and enhancing the photoelectrode’s PEC performance [ 25 ]. Cobalt-phosphate (Co-Pi) is a crucial co-catalyst among many because of its noble-free nature, capacity to speed up hydrogen precipitation reactions and improve the rate of oxygen precipitation [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. The Co-Pi-modified BiVO 4 /Cu 2 O photoanode exhibits high activity and potential for methylene blue (MB) and fluoroquinolones antibiotic (CIP) degradation when used to catalyze the degradation of organic pollutants, and it is anticipated to be used consistently to catalyze the degradation of refractory organic pollutants in water [ 36 ].…”
Section: Introductionmentioning
confidence: 99%
“…Na utilização de semicondutores para a remediação de poluentes o objetivo é utilizar os portadores de cargas para oxidar ou reduzir substâncias de interesse, dessa forma a recombinação deve ser mínima e a separação de cargas deve durar tempo suficiente para reagir com as substâncias presentes na superfície do semicondutor, e consequentemente transformar fótons em energia química 88,89 . Considerando os fatos listados acima dos processos possíveis de recombinação existem algumas estratégias que estão sendo adotadas de maneira a reduzir a taxa de recombinação e aumentar a atividade fotocatalítica como: a utilização de nanopartículas 90 ; a imobilização de semicondutores em substratos condutores para aplicação de potencial e formação de heterojunções com semicondutores 91 .…”
Section: Remoção De Poluentes Da áGua Por Fotocatálise Heterogênea (F...unclassified
“…18 µA cm -2 em iluminação ambiente e ca. 80 µA cm -2 sob irradiação policromática, comportamento esperado para eletrodos semicondutores do tipo-n. 91,[113][114][115] A comparação dos dados obtidos para os eletrodos de SS|WO3 e SS|WO3/TiO2 revelou que a fotocorrente para o eletrodo SS|WO3/TiO2 é resultado da contribuição de ambos os semicondutores. A literatura também relata este aumento na fotocorrente de compósitos de WO3/TiO2 em relação ao material puro.…”
Section: (A) (B) (C) (D) (E) (E)unclassified