A novel p-LaFeO3/n-Ag3PO4 heterojunction photocatalyst for phenol degradation under visible light irradiation

Yang, Jun; Hu, Ruisheng; Meng, Wanwan; Du, Yanfei

doi:10.1039/c5cc09222a

Cited by 126 publications

(48 citation statements)

References 25 publications

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“…However, the CB edge potential of PW 12 is 0.26 eV (vs. NHE) (Yang et al . ), which is more positive than the standard redox potential E(O 2 /

O_{2}^{∙ -}

) (–0.33 eV vs. NHE) (Guo et al . ), indicating that the electrons at CB of PW 12 , can't reduce O 2 to

O_{2}^{∙ -}

.…”

Section: Resultsmentioning

confidence: 95%

“…However, the CB edge potential of PW 12 is 0.26 eV (vs. NHE) (Yang et al 2016), which is more positive than the standard redox potential E(O 2 /O •2 2 ) (-0.33 eV vs. NHE) (Guo et al 2013), indicating that the electrons at CB of PW 12 , can't reduce O 2 to O •2 2 . Adding a suitable amount of hydrogen peroxide, facilitate the generation of •OH and promote the degradation efficiency.…”

Section: Photocatalytic Degradation Mechanismmentioning

confidence: 88%

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Photocatalytic degradation of rhodamine B based on membrane catalyst of H₃O₄₀PW₁₂/quaternized chitosan

Wan

Wang

et al. 2018

Water & Environment J

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Increasing environmental pollution caused by toxic dyes due to their hazardous nature is a matter of great concern, and lacks the effective methods to remove them. Therefore, in this research a series of H3O40PW12/Quaternized chitosan (PWX%/QCS) membrane catalyst is synthesized based on QCS (positively charged) and keggin‐type H3O40PW12 (negatively charged), which is available to degrade rhodamine B. The optimum experimental conditions are investigated and results reveal that the degradation rate is over 92.1% and the chemical oxygen demand (COD) decreases is 78.09%, which is obtained based on the follow conditions is that the UV radiation is 90 min, the dose of membrane catalyst is 0.1g, the doping amount PW12 (H3O40PW12) is 35 wt%, RB aqueous solution (30mL) is 5mg/L, the reaction temperature is 30°C, pH = 5 and H2O2 is 20mM. The simulation result reveals that the photocatalytic degradation reaction of RB with PWX%/QCS membrane catalyst in an aqueous solution can be described by the Langmuir–Hinshelwood equation. And the initiation rate constant and the initiation adsorption constant in this case are 4.082mg/(L/min) and 0.01090L/mg, respectively.

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“…However, the CB edge potential of PW 12 is 0.26 eV (vs. NHE) (Yang et al . ), which is more positive than the standard redox potential E(O 2 /

O_{2}^{∙ -}

) (–0.33 eV vs. NHE) (Guo et al . ), indicating that the electrons at CB of PW 12 , can't reduce O 2 to

O_{2}^{∙ -}

.…”

Section: Resultsmentioning

confidence: 95%

Section: Photocatalytic Degradation Mechanismmentioning

confidence: 88%

Photocatalytic degradation of rhodamine B based on membrane catalyst of H₃O₄₀PW₁₂/quaternized chitosan

Wan

Wang

et al. 2018

Water & Environment J

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“…The · O 2 – could oxidize and decompose RhB to small molecules, resulting in the removal of organic pollutants. The holes retained on the valence band (VB) of CdS tend to migrate to SNO but could not transform the OH– to · OH ( V · OH/OH – = 1.99 V vs. NHE, pH = 7), thus the RhB will be degraded by holes. These CdS/SNO heterojunction photocatalysts are typical type II heterojunction, which is quite beneficial for the separation of charge carriers, thus improving the photocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Construction of Novel CdS/SnNb₂O₆ Heterojunctions with Enhanced Photocatalytic Degradation Activity Under Visible Light

Xuan

et al. 2018

Eur J Inorg Chem

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‐Accelerating the photo‐induced charge carrier transfer and improving charge utilization are critical for enhancing the photocatalytic activity of photocatalysts. In this work, we successfully constructed CdS/SnNb2O6 heterojunction photocatalysts by a facile hydrothermal method. The obtained CdS/SnNb2O6 heterojunction exhibited better photocatalytic performance than pristine CdS and SnNb2O6, and the photocatalytic activity of the optimal ratio sample (40 % CdS) was 3.2 and 28.5 times as high as that of the pristine CdS and SnNb2O6, respectively. On the basis of the PL spectra, transient photocurrent response, trapping experiments of the active species, and ESR results, the possible charge carrier transfer and photocatalytic mechanisms of the CdS/SnNb2O6 heterojunction photocatalyst have been illustrated. We demonstrated that the combination of CdS and SnNb2O6 can greatly boost the photo‐generated charge carrier separation and therefore enhance the photocatalytic activity. Our work opens up a new insight for development of semiconductor photocatalysts with high efficiency.

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“…There are many research efforts targeted at the modification of semiconductors to improve photocatalytic activity, including non‐metal ion doping, metal ion doping, metal and non‐metal ion co‐doping . Most of the researchers have focused on the heterojunction structures, which have efficiently increased the photocatalytic activity of semiconductors over the last few years . Among various semiconductors reported, MoO 3 is a well‐known metal oxide semiconductor that has been considered to be a promising candidate to form the Z‐scheme heterostructured photocatalyst owing to its unique energetic and electrical properties .…”

Section: Introductionmentioning

confidence: 99%

Construction of hole‐transported MoO_3‐x coupled with CdS nanospheres for boosting photocatalytic performance via oxygen‐defects‐mediated Z‐scheme charge transfer

Wang

et al. 2019

Applied Organom Chemis

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The establishment of Z‐scheme charge transfer between semiconductors is an effective method to improve the performance of hybridized semiconductor photocatalysts. Herein, the novel photocatalysts consisting of MoO3‐x and varying amounts of cadmium sulfide (CdS) nanospheres were successfully prepared via the one‐pot hydrothermal method in the presence of polyvinylpyrrolidone (PVP). It is indicated that the PVP not only served as the reducing agent for the formation of oxygen defects in MoO3‐x, but also the cross‐linking agent for the coupling between MoO3‐x and CdS. The CdS/MoO3‐x composite allowed for higher visible‐light photocatalytic performance for enhanced removal of methylene blue and tetracycline with an efficiency of 97.6% and 85.5%, respectively. The improved performance of the CdS/MoO3‐x composite was found to be mainly attributable to the remarkable charge carrier separation and transfer between CdS and MoO3‐x based on the favorable hole‐transporting nature and oxygen deficiencies of MoO3‐x. In addition, the hole‐oxidized photocorrosion of CdS was efficiently suppressed due to the presence of hole‐attractive MoO3‐x. At the solid interface, an oxygen‐defects‐mediated Z‐scheme charge carrier transfer pathway was proposed as the underlying mechanism for the superior photocatalytic reaction.

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A novel p-LaFeO₃/n-Ag₃PO₄ heterojunction photocatalyst for phenol degradation under visible light irradiation

Cited by 126 publications

References 25 publications

Photocatalytic degradation of rhodamine B based on membrane catalyst of H₃O₄₀PW₁₂/quaternized chitosan

Photocatalytic degradation of rhodamine B based on membrane catalyst of H₃O₄₀PW₁₂/quaternized chitosan

Construction of Novel CdS/SnNb₂O₆ Heterojunctions with Enhanced Photocatalytic Degradation Activity Under Visible Light

Construction of hole‐transported MoO_3‐x coupled with CdS nanospheres for boosting photocatalytic performance via oxygen‐defects‐mediated Z‐scheme charge transfer

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A novel p-LaFeO3/n-Ag3PO4 heterojunction photocatalyst for phenol degradation under visible light irradiation

Cited by 126 publications

References 25 publications

Photocatalytic degradation of rhodamine B based on membrane catalyst of H3O40PW12/quaternized chitosan

Photocatalytic degradation of rhodamine B based on membrane catalyst of H3O40PW12/quaternized chitosan

Construction of Novel CdS/SnNb2O6 Heterojunctions with Enhanced Photocatalytic Degradation Activity Under Visible Light

Construction of hole‐transported MoO3‐x coupled with CdS nanospheres for boosting photocatalytic performance via oxygen‐defects‐mediated Z‐scheme charge transfer

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A novel p-LaFeO₃/n-Ag₃PO₄ heterojunction photocatalyst for phenol degradation under visible light irradiation

Photocatalytic degradation of rhodamine B based on membrane catalyst of H₃O₄₀PW₁₂/quaternized chitosan

Photocatalytic degradation of rhodamine B based on membrane catalyst of H₃O₄₀PW₁₂/quaternized chitosan

Construction of Novel CdS/SnNb₂O₆ Heterojunctions with Enhanced Photocatalytic Degradation Activity Under Visible Light

Construction of hole‐transported MoO_3‐x coupled with CdS nanospheres for boosting photocatalytic performance via oxygen‐defects‐mediated Z‐scheme charge transfer