Synthesis of nano-ZnS by lyotropic liquid crystal template method for enhanced photodegradation of methylene blue

Zhang, Xin; Shan, Congcong; Ma, Sumei; Zhao, Susu; Yang, Jing

doi:10.1016/j.inoche.2021.109089

Cited by 8 publications

(7 citation statements)

References 55 publications

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“…This could be attributed to the incomplete recovery of catalysts, material agglomeration or accumulation of a small amount of the RhB on the surface of catalysts. 6,18,23 The XRD results of Z-L-ZnS-180 before and after cyclic experiments are shown in Fig. 15(b).…”

Section: Resultsmentioning

confidence: 99%

“…16,17 ZnS has two common crystalline structures of cubic sphalerite (b-ZnS, B3.72 eV) and hexagonal wurtzite (a-ZnS, B3.77 eV). 17,18 The former is the most stable form of ZnS bulk, which gets converted to a metastable state a-ZnS at high temperature (Z1020 1C) and melts at 1650 1C. However, the distortion of ZnS 4 tetrahedral a-ZnS generates spontaneous polarization and an internal electric field, which favors the separation of photo-generated carriers.…”

Section: Introductionmentioning

confidence: 99%

“…12 Researchers have extensively studied the synthesis of ZnS with different morphologies, such as nanosheets, 20 nanorods, 21 nanotubes, 22 nanospheres, 23 etc. To date, the synthetic methods of ZnS include the template method, 18 chemical vapor deposition (CVD), 24 and the hydro/solvothermal method. 25 Among them, the good crystallinity of ZnS can be prepared using a hydrothermal method.…”

Section: Introductionmentioning

confidence: 99%

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Hydrothermal synthesis and photocatalytic performance of visible light responsive ZnS microspheres for azo dyes

Wen

Yang

Huang³

et al. 2022

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hydrothermal synthesis and photocatalytic performance of visible light responsive ZnS microspheres for azo dyes

Wen

Yang

Huang³

et al. 2022

New J. Chem.

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“…More recently, Zhang and co-workers [ 19 ] prepared ZnS NSs with a lyotropic liquid crystal template method. The obtained ZnS NSs belong to the cubic sphalerite crystalline phase and are formed of irregular particles with a certain agglomeration and diameters varying from 60 nm to 200 nm.…”

Section: Zns Nanostructures Photocatalysts For Organic Pollutants Deg...mentioning

confidence: 99%

“…In the extremely varied family of transition metal semiconductors, zinc sulfide (ZnS) is a n-type semiconductor with wide band gap (2.6–4.6 eV), high electronic mobility, good thermal stability, non-toxicity, water insolubility, and quite low cost [ 18 ]. According to the literature [ 19 , 20 , 21 , 22 ], ZnS nanostructures (ZnS NSs) are efficient photocatalysts for organic pollutants degradation under UV light irradiation, but less active in Vis and sunlight, due to the wide band gap energies and intrinsic defects, resulting in a low number of photogenerated carriers, poor charge carriers mobility, and rapid photogenerated species recombination. These drawbacks somewhat limit the practical applications of ZnS as a photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Recent Developments in ZnS-Based Nanostructures Photocatalysts for Wastewater Treatment

Isac

Eneşca

2022

IJMS

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The continuous growth of the world population has led to the constant increase of environmental pollution, with serious consequences for human health. Toxic, non-biodegradable, and recalcitrant organic pollutants (e.g., dyes, pharmaceuticals, pesticides) are discharged into water resources from various industries, such as textiles, leather, pharmaceuticals, plastics, etc. Consequently, the treatment of industrial wastewater, via a sustainable technology, represents a great challenge for worldwide research. Photocatalytic technology, an innovative technique based on advanced oxidation process (AOP), is considered a green technology with promising prospects in the remediation of global environmental issues. In photocatalysis, a very important role is attributed to the photocatalyst, usually a semiconductor material with high solar light absorption capacity and conductivity for photogenerated-charge carriers. Zinc sulfide (ZnS), as n-type semiconductor with different morphologies and band gap energies (Eg = 3.2–3.71 eV), is recognized as a promising photocatalyst for the removal of organic pollutants from wastewater, especially under UV light irradiation. This review deals with the recent developments (the last five years) in ZnS nanostructures (0D, 1D, 3D) and ZnS-based heterojunctions (n-n, n-p, Z scheme) used as photocatalysts for organic pollutants’ degradation under simulated (UV, Vis) and sunlight irradiation in wastewater treatment. The effects of different synthesis parameters (precursors’ type and concentration, capping agents’ dosages, reaction time and temperature, metal doping, ZnS concentration in heterostructures, etc.) and properties (particle size, morphology, band gap energy, and surface properties) on the photocatalytic performance of ZnS-based photocatalysts for various organic pollutants’ degradation are extensively discussed.

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Advancements in droplet reactor systems represent new opportunities in chemical reactor engineering: A perspective

et al. 2023

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Traditional chemical reactors, such as batch reactors, continuous reactors, and semi‐batch reactors, have been extensively studied and frequently act as central components of modern chemical plants. Recently, various advances in reaction times, surface‐to‐volume ratios, required amounts of reagents, and throughput have led to new directions in the design of miniaturized chemical reactors. In this Perspective, we provide an overview of the progress from traditional to miniaturized chemical reactors by summarizing the characteristics and applications of different types of reactors. Furthermore, we compare classical chemical reactors and miniaturized droplet reactors to highlight advancements in the design of droplet reactor systems based on open functional surfaces. Finally, we provide an outlook on the research directions of miniaturized droplet reactors.

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Synthesis of nano-ZnS by lyotropic liquid crystal template method for enhanced photodegradation of methylene blue

Cited by 8 publications

References 55 publications

Hydrothermal synthesis and photocatalytic performance of visible light responsive ZnS microspheres for azo dyes

Hydrothermal synthesis and photocatalytic performance of visible light responsive ZnS microspheres for azo dyes

Recent Developments in ZnS-Based Nanostructures Photocatalysts for Wastewater Treatment

Advancements in droplet reactor systems represent new opportunities in chemical reactor engineering: A perspective

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