ZnS–ZnO nanocomposites: synthesis, characterization and enhanced photocatatlytic performance

Ma, Qun; Wang, Zhengshu; Jia, Hanxiang; Wang, Yongqian

doi:10.1007/s10854-016-5110-4

Cited by 15 publications

(3 citation statements)

References 21 publications

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“…In summary we presented an opportunity of a “facile synthesis of well‐crystallized, cost‐effective, nanosized (≈15 nm) and novel ZnS‐ZnO nanocomposites” . We proved the “near visible” light reactivity of the particles which was much better than the one of well‐established UV Type I photoinitiator (Darocur 1173), ZnO or ZnS (335 nm bandgap).…”

Section: Figurementioning

confidence: 80%

Towards Visible LED Illumination: ZnO‐ZnS Nanocomposite Particles

2020

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Nowadays photo semiconductors such as ZnO are one of the driving forces of humanity towards economically and ecological safe life. Such semiconductors are used in solar applications and for light emission but also multiple investigations using the material as photocatalysts (water‐splitting), or as photo initiators were published. The combination of the inorganic material with an organic matrix leads to possible interesting hybrid materials. One drawback for ZnO and other photo semiconductors is the short UV wavelength (in the UV−range) which is necessary to photoactivation. We will present the possibility of modified ZnS‐ZnO nanocomposites being reactive towards visible light for example 406 nm LED illumination. Therefore, the particles are used as initiators for free radical polymerization. The simply to handle experimental preparation procedure of the sulphur containing ≈10 nm particles is described in this work for the first time.

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Section: Figurementioning

confidence: 80%

Towards Visible LED Illumination: ZnO‐ZnS Nanocomposite Particles

2020

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“…3.72 eV and 3.77 eV for cubic and hexagonal forms, respectively [8,9]). By adjusting the size and/or morphology, the photocatalytic activity of ZnS can be dramatically improved [10,11]. A typical example is the nanoporous w-ZnS spheres, which display very high photocatalytic activity and are even more efficient than that of the particularly successful photocatalyst Degussa P25 under both visible and UV light irradiation [12].…”

Section: Introductionmentioning

confidence: 99%

“…To date, the investigation of ZnS/ZnO core/shell heterostructures has been relatively low compared to the ZnO/ ZnS core/shell ones. Several groups have synthesized ZnS/ ZnO core/shell heterostructures by thermal treatment of ZnS nanomaterials, which are prepared by hydrothermal reaction at a temperature higher than 140 °C [11,27]. But unfortunately, these methods used for ZnS/ZnO core/shell heterostructures are low yield and time-consuming (usually more than 10 h) at high temperature and pressure, resulting in high costs and diminished resources [6,28].…”

Section: Introductionmentioning

confidence: 99%

Facilein situsynthesis of wurtzite ZnS/ZnO core/shell heterostructure with highly efficient visible-light photocatalytic activity and photostability

Xiao

Huang

et al. 2018

J. Phys. D: Appl. Phys.

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High photocatalytic activity and photostability are the pursuit of the goal for designing promising photocatalysts. Herein, using ZnO to encapsulate ZnS nanoparticles is proposed as an effective strategy to enhance photocatalytic activity and anti-photocorrosion. The ZnS/ZnO core/shell heterostructures are obtained via an annealing treatment of ZnS nanoparticles produced by a facile wet chemical approach. Due to its small size, the nascent cubic sphalerite ZnS (s-ZnS) converts into a hexagonal wurtzite ZnS (w-ZnS)/ZnO core/shell structure after annealing treatment. In situ oxidation leads to increasing ZnO, simultaneously decreasing the w-ZnS content in the resultant w-ZnS/ZnO with thermal annealing time. The w-ZnS/ZnO core/shell heterostructures show high photocatalytic activity, demonstrated by the photodegradation rate of methylene blue being up to ten-fold and seven-fold higher than that of s-ZnS under UV and visible light irradiation, respectively, and the high capability of degrading rhodamine B. The enhanced photocatalytic activity may be attributed to the large specific surface and improved charge carrier separation at the core/shell interface. Moreover, it displays high photostability owing to the protection of the ZnO shell, greatly inhibiting the photocorrosion of ZnS. This facile in situ oxidation is effective and easily scalable, providing opportunities for developing novel core/shell structure photocatalysts with high activity and photostability.

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Nanocomposites of ZnO for Water Remediation

Basnet

Chatterjee

2019

Composites for Environmental Engineering

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ZnS–ZnO nanocomposites: synthesis, characterization and enhanced photocatatlytic performance

Cited by 15 publications

References 21 publications

Towards Visible LED Illumination: ZnO‐ZnS Nanocomposite Particles

Towards Visible LED Illumination: ZnO‐ZnS Nanocomposite Particles

Facilein situsynthesis of wurtzite ZnS/ZnO core/shell heterostructure with highly efficient visible-light photocatalytic activity and photostability

Nanocomposites of ZnO for Water Remediation

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