Mass Production and High Photocatalytic Activity of ZnS Nanoporous Nanoparticles

Hu, Jin‐Song; Ren, Lingling; Guo, Yu‐Guo; Liang, Han‐Pu; Cao, Amin; Li, Wan; Chen, Bai

doi:10.1002/anie.200462057

Cited by 584 publications

(197 citation statements)

References 42 publications

Supporting

Mentioning

194

Contrasting

Order By: Relevance

“…These results are consistent with the finding by Tian et al 57 In addition, good dispersing and uniformity can also provide a large active surface area. 58,59 Based on the above discussion, it is easily believable that the photocatalytic superiority of as-prepared CuS NSHMS with nanosheet building blocks is attributed to their high specific surface area, unique existence of double pore sizes, wholly exposed nanosheet building blocks, coexistence of hollow interior and hierarchical shell walls, good crystallinity, small crystallite size, excellent dispersing and uniformity. Moreover; it is to be noted that the photodegradation experiment of MB dye was carried out under illumination by natural light.…”

Section: Photocatalytic Propertiesmentioning

confidence: 94%

Template free synthesis of CuS nanosheet-based hierarchical microspheres: an efficient natural light driven photocatalyst

et al. 2014

View full text Add to dashboard Cite

Well controlled nanosheets-based hierarchical microspheres (NSHMS) of pure covellite phase CuS were synthesized using a facile PVP assisted solvothermal process. The reaction conditions were optimized using various amounts of PVP to develop unique hierarchical structured hollow microspheres. CuS hollow structures have a bandgap of ~1.97 eV. These mesoporous structures exhibit excellent photocatalytic activity in degradation of organic dyes (Methylene Blue) under natural light in comparison to other structures of copper sulphide. These photocatalysts show extraordinary reusability with over 96.5% degradation of organic dye after 6th cycle. A "bottom-up" assembly was successfully developed to synthesize hollow microspheres with unique and well defined architectures at large scale, which offer a good opportunity to understand the fundamental significance of unusual and complex hierarchical structures for their potential applications. This journal is the Partner Organisations 2014.Keywords nanosheet, light, driven, cus, free, synthesis, hierarchical, photocatalyst, template, microspheres, efficient, natural Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsTanveer, M., Cao, C., Ali, Z., Aslam, I., Idrees, F., Khan, W. S., But, F. K., Tahir, M. & Mahmood, N. (2014 Well controlled nanosheets-based hierarchical microspheres (NSHMS) of pure covellite phase CuS were synthesized using a facile PVP assisted solvothermal process. The reaction conditions were optimized using various amounts of PVP to develop unique hierarchical structured hollow microspheres. CuS hollow structures have a bandgap of~1.97 eV. These mesoporous structures exhibit excellent photocatalytic activity in degradation of organic dyes (Methylene Blue) under natural light in comparison to other structures of copper sulphide. These photocatalysts show extraordinary reusability with over 96.5% degradation of organic dye after 6th cycle. A "bottom-up" assembly was successfully developed to synthesize hollow microspheres with unique and well defined architectures at large scale, which offer a good opportunity to understand the fundamental significance of unusual and complex hierarchical structures for their potential applications.

show abstract

Section: Photocatalytic Propertiesmentioning

confidence: 94%

Template free synthesis of CuS nanosheet-based hierarchical microspheres: an efficient natural light driven photocatalyst

et al. 2014

View full text Add to dashboard Cite

show abstract

“…In nanosized materials, many factors can change the phase transition temperature, including the small size, increased pressure, surface modification, and precipitation rates during the synthesis of the semiconductor. 6,7,8,9,10,11,12 A low temperature preparation of hexagonal ZnS is desirable because the prepared wurtzite nanostructures can meet thermal stability required for reliable optoelectronic device operation, including the incorporation of these materials in flexible substrates such as plastics. The hexagonal structure is also the more desirable structure for its optical properties than the cubic blende structure.…”

Section: Introductionmentioning

confidence: 99%

“…The hexagonal structure is also the more desirable structure for its optical properties than the cubic blende structure. [6][7][8][9][10][11][12] Cubic blende ZnS has been synthesized in a number of ways including by precipitation, by hydrothermal synthesis, and using ultrasonic irradiation. 13,14,15 Using these techniques for large scale synthesis limits the applications of ZnS as a photocatalyst due to the high cost, difficulty in separation, recovery and recycling in industrial environments.…”

Section: Introductionmentioning

confidence: 99%

Novel microwave assisted synthesis of ZnS nanomaterials

Synnott

Seery²,

Hinder

et al. 2013

Nanotechnology

View full text Add to dashboard Cite

A novel ambient pressure microwave-assisted technique is developed in which silver and indium modified ZnS is synthesised. The as prepared ZnS is characterised by X-ray diffraction, UV-Vis spectroscopy, X-ray photoelectron spectroscopy and luminescence spectroscopy. This procedure produced crystalline materials with particle sizes below 10 nm. The synthesis technique leads to defects in the crystal which induce mid energy levels in the band gap and lead to indoor light photocatalytic activity. Increasing the amount of silver causes a phase transition from cubic blende to hexagonal phase ZnS. In a comparative study, when the ZnS cubic blende is heated in a conventional chamber furnace, it is completely converted to ZnO at 600 °C. Both cubic blende and hexagonal ZnS show excellent photocatalytic activity under irradiation from a 60 watt light bulb. These ZnS samples also show significantly higher photocatalytic activity compared to the commercially available TiO 2 (Evonik-Degussa P-25).

show abstract

“…C Among the various semiconductor photocatalysts for pollutant degradation and water splitting, zinc sulfide (ZnS) is one of the most popular and has been studied extensively because it possesses a band structure tunable by doping and the proper negative reduction potential. [1][2][3][4][5][6][7][8][9][10][11] Similar to TiO 2 , bulk ZnS possesses wide bandgaps of 3.72 (zinc-blende) and 3.77 eV (wurtzite), 4,5 which hamper efficient use of solar energy. Hence, studies have been carried out to modify/modulate the band structure.…”

mentioning

confidence: 99%

3C-SiC/ZnS heterostructured nanospheres with high photocatalytic activity and enhancement mechanism

Zhang

Liu

et al. 2015

AIP Advances

View full text Add to dashboard Cite

3C-SiC/n-type ZnS heterostructured nanospheres synthesized hydrothermally deliver enhanced photocatalytic performance under visible light excitation. The heterostructured catalysts consisting of 3C-SiC and ZnS nanocrystals with a mean size being less than 5 nm exhibit extended light absorption to the visible range. The proper band structure of the 3C-SiC and ZnS nanocrystals and intrinsic electric field induced by the heterojunction promote separation of photoexcited electrons and holes in the ZnS and 3C-SiC nanocrystals resulting in the increased photocatalytic efficiency. The associated mechanism is studied and proposed.

show abstract

Mass Production and High Photocatalytic Activity of ZnS Nanoporous Nanoparticles

Cited by 584 publications

References 42 publications

Template free synthesis of CuS nanosheet-based hierarchical microspheres: an efficient natural light driven photocatalyst

Template free synthesis of CuS nanosheet-based hierarchical microspheres: an efficient natural light driven photocatalyst

Novel microwave assisted synthesis of ZnS nanomaterials

3C-SiC/ZnS heterostructured nanospheres with high photocatalytic activity and enhancement mechanism

Contact Info

Product

Resources

About