Hierarchical flower-like SnSe2 supported Ag3PO4 nanoparticles: Towards visible light driven photocatalyst with enhanced performance

Tan, Pengfei; Chen, Xi; Wu, Laidi; Shang, Yan; Liu, Wenwen; Pan, Jun; Xiong, Xiang

doi:10.1016/j.apcatb.2016.09.033

Cited by 160 publications

(43 citation statements)

References 59 publications

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“…The active species involved in degradation of TC were investigated through a scavenger test, where 1 × 10 −3 m isopropyl alcohol (IPA), para ‐benzoquinone ( p ‐BQ), ethylenediaminetetraacetic acid, and dimethyl sulfoxide are taken as hydroxyl (•OH), •O 2 − , hole (h + ), and electron (e − ) trapper, respectively . In the absence of all these scavengers, the percentage degradation of TC over BCL is found to be 92% in 60 min.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Rational Design of a Coupled Confronting Z‐Scheme System Toward Photocatalytic Refractory Pollutant Degradation and Water Splitting Reaction

Kandi

Sahoo

Martha

et al. 2019

Adv Materials Inter

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photocatalyst. In this context, there are several reported works on Z-scheme-based semiconductors such as CdS/BiVO 4 , [2] BiVO 4 /CdS quantum dots (QDs), [3] CdS-WO 3 , [4] TiO 2 /CdS, [5] etc. Yet, the typical charge transfer process competes with the binary Z-scheme charge transfer and the photocatalytic performance is still unable to triumph the practical application, i.e., to conquer the concerns of sustainable energy and environment-related issues. Understandably then, scientists started focusing on the construction of ternary semiconductors with dual Z-scheme pathway for more effective charge separation. Many research groups have reported their findings in designing unidirectional double Z-scheme-based photocatalysts for water redox reactions and degradation of harmful pollutants. [6][7][8][9][10][11] Moreover, our group has reported photocatalytic reduction of Cr 6+ → Cr 3+ and water → H 2 over Cu-MoO 3 /g-C 3 N 4 hybrid nanocomposite. [6] Ternary Ag 2 CO 3 /CeO 2 /AgBr photocatalyst has been reported by Wen et al. with double Z-scheme configuration performing photodegradation of levofloxacin. [7] GO/Ag 2 CrO 4 /g-C 3 N 4 nanocomposite has been reported with superior photocatalytic performance toward refractory pollutant degradation [8] and AgBr@Bi 2 WO 6 /WO 3 for degrading rhodamine B. [9] A similar double Z-scheme photocatalytic system (Bi 2 S 3 /SnS 2 /Bi 2 O 3 ) has also been reported by Yu et al. for dye removal under sunlight irradiation. [10] ZnO/ZnS/g-C 3 N 4 ternary double Z-scheme heterojunction has been synthesized by Dong et al. for photocatalytic H 2 generation. [11] Despite accomplishments of certain stimulating achievements by these double Z-scheme photocatalysts, still improvements can be attained to scale up the practical application in the photocatalytic field. We report here a prototype novel confronting bidirectional double Z-schemebased UV-vis active photocatalyst with two single Z-scheme systems acting in opposite direction toward enhanced photocatalytic water oxidation reaction (WOR) and organic pollutants, i.e., tetracycline (TC) and methyl orange (MO). It consists of an oxygen evolution catalyst, i.e., BiVO 4 abbreviated as "B" (monoclinic clinobisvanite phase) composed of tetrahedron and octahedron of VO 4 and BiO 8 , respectively, with threefold coordinated O, fourfold coordinated V, and eightfold coordinated Bi. This phase of B collects distinct attention in WORs Fabricating competent nanoarchitecture photocatalytic systems with desired band edge potential is crucial for effective charge separation that manifolds photocatalytic action. Here, a prototype pristine rational design of allsolid-state coupled confronting Z-scheme (CCZ) system is synthesized by coprecipitation and hydrothermal method. This proof of concept comprises BiVO 4 (B) and MgAl layered double hydroxide (L) as photosystem II (PS-II) whereas CdS quantum dots (QDs, C) as photosystem I (PS-I). CdS QDs trigger H 2 production that subsequently boosts O 2 production at PS-II. Furthermore, this rare CCZ system shows ...

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Section: Photocatalytic Activitymentioning

confidence: 99%

Rational Design of a Coupled Confronting Z‐Scheme System Toward Photocatalytic Refractory Pollutant Degradation and Water Splitting Reaction

Kandi

Sahoo

Martha

et al. 2019

Adv Materials Inter

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show abstract

“…Figure 3b presents the P 2p high-resolution XPS spectrum of the composite. The peak at around 133.2 eV corresponds to the characteristic binding energy of P 5+ oxidation state in Ag 3 PO 4 [51]. Figure 3c, d, shows the Bi 4f and Fe 2p high-resolution XPS spectra, respectively.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis and Enhanced Visible-Light Photocatalytic Activity of Novel p-Ag3PO4/n-BiFeO3 Heterojunction Composites for Dye Degradation

Yang

Tang

et al. 2018

Nanoscale Res Lett

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In this work, Ag3PO4 microparticles were decorated onto the surface of BiFeO3 microcuboids through a precipitation method to obtain p-Ag3PO4/n-BiFeO3 heterojunction composites. The composites were employed for the degradation of acid orange 7 (AO7) under visible-light irradiation. It is found that the composites exhibit much higher photocatalytic efficiency than bare BiFeO3. Meanwhile, the intrinsical visible-light-driven photocatalytic activity of Ag3PO4/BiFeO3 composites was further confirmed by the degradation of phenol. In addition, the photo-Fenton-like catalysis property of the composite was also evaluated. The photocurrent analysis indicates that the combination of BiFeO3 with Ag3PO4 leads to the inhibition of recombination of photoinduced electrons and holes. The obvious enhancement in the photocatalytic activity of the composite is mainly ascribed to the efficient photogenerated charge separation and interfacial charge migration caused by the formation of Ag3PO4/BiFeO3 p-n heterojunctions.

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“…On the other hand, although the absolute exposure of high-energy facets of Ag 3 PO 4 could improve the quantum efficiency, the photo-generated electrons of Ag 3 PO 4 would preferably reduce Ag + to Ag 0 [Ag + + e -→ Ag 0 , +0.75 V vs. NHE(normal hydrogen electrode)] in the absence of scavengers, resulting in serious photocorrosion [2]. In order to improve the photocatalytic stability of Ag 3 PO 4 , heterojunctions (Ag 3 PO 4 /Ti 3 C 2 [13], Ag 3 PO 4 /SnSe 2 [14], Ag 3 PO 4 /Co 3 O 4 [15]) and Z-schemes (Ag 3 PO 4 /CuBi 2 O 4 [16], Ag 3 PO 4 /g-C 3 N 4 [17], SrTiO 3 /Ag/Ag 3 PO 4 [18]) were constructed to improve charge separation. Our previous study also prepared TiO 2 @MoS 2 /Ag 3 PO 4 to improve the anti-photocorrosion and photocatalytic activity [19].…”

Section: Introductionmentioning

confidence: 99%

Pt Nanowire-Anchored Dodecahedral Ag3PO4{110} Constructed for Significant Enhancement of Photocatalytic Activity and Anti-Photocorrosion Properties: Spatial Separation of Charge Carriers and PhotogeneratedElectron Utilization

Zhu

Chen³

et al. 2020

Catalysts

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Pt nanowire-anchored dodecahedral Ag 3 PO 4 {110} was constructed for organics photodegradation. SEM and TEM images confirmed that the Pt nanowires were grafted on dodecahedral Ag 3 PO 4 , which was entirely bounded by {110} facets. All the X-ray diffraction peaks of the samples were indexed to the body-centered cubic phase of Ag 3 PO 4 , indicating that Pt nanowire-anchored dodecahedral Ag 3 PO 4 well maintained the original crystal structure. The rhombic dodecahedral Ag 3 PO 4 entirely bounded by {110} facets achieved high photocatalytic activity. Due to the formation of a Schottky barrier, the Pt nanowires improved the separation of the charge carriers of Ag 3 PO 4 . Furthermore, they provided a fast expressway to transfer the photogenerated electrons and prolonged the lifetime of the charge carriers via long-distance transport, resulting in the accumulation of holes on Ag 3 PO 4 for organics degradation. More importantly, the Pt nanowires improved the reduction potential of the photogenerated electrons for O 2 reduction to ·O 2 − , which enhanced the photocatalytic activity and anti-photocorrosion properties of Ag 3 PO 4 . We found that 99.5% of Rhodamine B (RhB) could be removed over 0.5ωt% Pt nanowire-anchored dodecahedral Ag 3 PO 4 within 10 min. Even after 10 cycles, the photocatalytic activity was still high. photoluminescence (PL), time-resolved photoluminescence (TRPL), UV-vis diffuse reflectance spectra (UV-visDRS), and photoelectrochemical analysis showed that Pt nanowire-anchored dodecahedral Ag 3 PO 4 exhibited lower bandgap, higher photocurrent intensity, better electronic conductivity, and longer charge carriers lifetime than other types of Ag 3 PO 4 crystals. Radical trapping experiments and electron paramagnetic resonance (EPR) analysis demonstrated that the holes were the main active species for organics photodegradation.

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Hierarchical flower-like SnSe2 supported Ag3PO4 nanoparticles: Towards visible light driven photocatalyst with enhanced performance

Cited by 160 publications

References 59 publications

Rational Design of a Coupled Confronting Z‐Scheme System Toward Photocatalytic Refractory Pollutant Degradation and Water Splitting Reaction

Rational Design of a Coupled Confronting Z‐Scheme System Toward Photocatalytic Refractory Pollutant Degradation and Water Splitting Reaction

Facile Synthesis and Enhanced Visible-Light Photocatalytic Activity of Novel p-Ag3PO4/n-BiFeO3 Heterojunction Composites for Dye Degradation

Pt Nanowire-Anchored Dodecahedral Ag3PO4{110} Constructed for Significant Enhancement of Photocatalytic Activity and Anti-Photocorrosion Properties: Spatial Separation of Charge Carriers and PhotogeneratedElectron Utilization

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