Template-oriented synthesis of monodispersed SnS2@SnO2 hetero-nanoflowers for Cr(VI) photoreduction

Zhang, Xi; Zhang, Peng; Wang, Lijie; Gao, Hongqing; Zhao, Jiangtao; Liang, Changhao; Hu, Junhua; Shao, Guosheng

doi:10.1016/j.apcatb.2016.03.035

Cited by 112 publications

(30 citation statements)

References 28 publications

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“…A low photoluminescence intensity is generally indicative of a high separation efficiency of electron-hole pairs. 57,58 As shown in Fig. 13, the similar photoluminescence peaks were observed for the as-prepared samples (BiO 2 CO 3 , BP and BP/C0.5).…”

Section: Possible Mechanism Of Photocatalytic Activity Enhancementsupporting

confidence: 74%

Novel Bi₂O₂CO₃/polypyrrole/g-C₃N₄nanocomposites with efficient photocatalytic and nonlinear optical properties

Zhao

Wang

et al. 2017

RSC Adv.

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Section: Possible Mechanism Of Photocatalytic Activity Enhancementsupporting

confidence: 74%

Novel Bi₂O₂CO₃/polypyrrole/g-C₃N₄nanocomposites with efficient photocatalytic and nonlinear optical properties

Zhao

Wang

et al. 2017

RSC Adv.

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“…6(a). Since pure SnO 2 can absorb solar energy at wavelengths shorter than 400 nm, our experimental results are consistent with the previous report of Zhang et al (2016b). It is clearly seen that visible-light absorption is enhanced after the addition of SnS 2 .…”

Section: Resultssupporting

confidence: 93%

“…OH and reacts with the photogenerated holes. These hydroxyl radicals together with oxygen peroxide radicals from the SnS 2 -SnO 2 / graphene nanocomposites give rise to the oxidative decomposition of RhB to H 2 O, CO 2 and other mineralization substances (Zhang et al, 2016b). The reaction mechanism can be summarized as follows: SORG + h !…”

mentioning

confidence: 99%

Construction of SnS₂–SnO₂ heterojunctions decorated on graphene nanosheets with enhanced visible-light photocatalytic performance

Huang

et al. 2019

Acta Crystallogr C Struct Chem

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Heterostructures formed by the growth of one kind of nanomaterial in/on another have attracted increasing attention due to their microstructural characteristics and potential applications. In this work, SnS2–SnO2 heterostructures were successfully prepared by a facile hydrothermal method. Due to the enhanced visible‐light absorption and efficient separation of photo‐generated holes and electrons, the SnS2–SnO2 heterostructures display excellent photocatalytic performance for the degradation of rhodamine (RhB) under visible‐light irradiation. Additionally, it is found that the introduction of graphene into the heterostructures further improved photocatalytic activity and stability. In particular, the optimized SnS2–SnO2/graphene photocatalyst can degrade 97.1% of RhB within 60 min, which is about 1.38 times greater than that of SnS2–SnO2 heterostructures. This enhanced photocatalytic activity could be attributed to the high surface area and the excellent electron accepting and transporting properties of graphene, which served as an acceptor of the generated electrons to suppress charge recombination. These results provide a new insight for the design and development of hybrid photocatalysts.

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“…The UPS is generally hired to get the actual work function and position of the valence band. [ 25–29 ] UV–vis was employed to figure out the band gap energies of TiO 2 and Ti 3 C 2 . According to the test results and band structure theory, the electrons are found to transfer from Ti 3 C 2 to TiO 2 once the heterojunction is established and the direction of a formed internal electric field is consistent with the theoretical simulations.…”

Section: Figurementioning

confidence: 99%

Photogenerated Electron Transfer Process in Heterojunctions: In Situ Irradiation XPS

et al. 2020

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Photoelectron transfer between heterojuctions is an important process for photocatalysis, and identification of the electron transfer process provides valuable information for catalyst design. Herein, Ti3C2, one of the widely used two‐dimensional materials, is used to produce a heterojunction of TiO2 and Ti3C2 by an in situ growth method and the photogenerated electrons transfer between the two components for photocatalytic water splitting to hydrogen is investigated. Theoretical simulation and experimental tests proclaim that electrons transfer from Ti3C2 to TiO2 forms an internal electric field, which implies that there exists the driving force of electronic movement from TiO2 to Ti3C2. In situ irradiation X‐ray photoelectron spectroscopy shows the binding energies of TiC (in Ti3C2) and TiO (in TiO2) move toward negative and positive positions, respectively, verifying the photogenerated electrons produced from TiO2 and transferring to Ti3C2 driven by the internal electric field. In addition, the amount of TiO2 nanoparticles also affects the hydrogen evolution rate. Several parallel experiments are designed to uncover the fact that less or excess amount of TiO2 nanoparticles leads to a tinier shift of binding energy, which hints the quantity of heterojunction is a considerable factor in photocatalytic performance. This work develops a new method to directly monitor the photoelectron transfer process between heterojuctions.

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Template-oriented synthesis of monodispersed SnS2@SnO2 hetero-nanoflowers for Cr(VI) photoreduction

Cited by 112 publications

References 28 publications

Novel Bi₂O₂CO₃/polypyrrole/g-C₃N₄nanocomposites with efficient photocatalytic and nonlinear optical properties

Novel Bi₂O₂CO₃/polypyrrole/g-C₃N₄nanocomposites with efficient photocatalytic and nonlinear optical properties

Construction of SnS₂–SnO₂ heterojunctions decorated on graphene nanosheets with enhanced visible-light photocatalytic performance

Photogenerated Electron Transfer Process in Heterojunctions: In Situ Irradiation XPS

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Template-oriented synthesis of monodispersed SnS2@SnO2 hetero-nanoflowers for Cr(VI) photoreduction

Cited by 112 publications

References 28 publications

Novel Bi2O2CO3/polypyrrole/g-C3N4nanocomposites with efficient photocatalytic and nonlinear optical properties

Novel Bi2O2CO3/polypyrrole/g-C3N4nanocomposites with efficient photocatalytic and nonlinear optical properties

Construction of SnS2–SnO2 heterojunctions decorated on graphene nanosheets with enhanced visible-light photocatalytic performance

Photogenerated Electron Transfer Process in Heterojunctions: In Situ Irradiation XPS

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Novel Bi₂O₂CO₃/polypyrrole/g-C₃N₄nanocomposites with efficient photocatalytic and nonlinear optical properties

Novel Bi₂O₂CO₃/polypyrrole/g-C₃N₄nanocomposites with efficient photocatalytic and nonlinear optical properties

Construction of SnS₂–SnO₂ heterojunctions decorated on graphene nanosheets with enhanced visible-light photocatalytic performance