Synergetic effect of CuS@ZnS nanostructures on photocatalytic degradation of organic pollutant under visible light irradiation

S. Harish; J. Archana; M. Navaneethan; S. Ponnusamy; Ajay Singh; Vinay Gupta; D. K. Aswal; H. Ikeda; Y. Hayakawa

doi:10.1039/c7ra04250g

Synergetic effect of CuS@ZnS nanostructures on photocatalytic degradation of organic pollutant under visible light irradiation

S. Harish
, J. Archana
, M. Navaneethan
, S. Ponnusamy
, Ajay Singh
, Vinay Gupta
, D. K. Aswal
, H. Ikeda
, Y. Hayakawa

Physics

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

Ultrafast visible light active CuS/ZnS nanostructured photocatalysts were synthesized by a hydrothermal method. The effect of the CuS concentration on the morphological, structural and optical properties of ZnS nanostructures were investigated. X-ray diffraction analysis indicated the formation of CuS/ZnS phases with good crystallinity. The presence of ZnS on CuS was confirmed by X-ray photoelectron spectroscopy, elemental mapping, scanning electron microscopy and high resolution transmission electron microscopy analyses. CuS/ZnS nanocomposites efficiently decomposed methylene blue (MB) upon irradiation with visible light. The degradation time was 3 times faster than that of bare ZnS and CuS. The scavenger analysis results revealed that photogenerated superoxide (O₂^-) radicals were the main reactive species for the degradation of MB. The maximum degradation efficiency of 95.51% was observed within 5 min for samples of 0.050 M CuS/ZnS composites. The obtained results suggested that the enhanced photocatalytic activity was due to the formation of CuS/ZnS heterojunctions which led to the efficient separation of the photoinduced carriers.

Original language	British English
Pages (from-to)	34366-34375
Number of pages	10
Journal	RSC Advances
Volume	7
Issue number	55
DOIs	https://doi.org/10.1039/c7ra04250g
State	Published - 2017

Access to Document

10.1039/c7ra04250g

OpenUrl availability

Full text

Cite this

@article{c2565d307f564232b8d5403fd2ed0d98,

title = "Synergetic effect of CuS@ZnS nanostructures on photocatalytic degradation of organic pollutant under visible light irradiation",

abstract = "Ultrafast visible light active CuS/ZnS nanostructured photocatalysts were synthesized by a hydrothermal method. The effect of the CuS concentration on the morphological, structural and optical properties of ZnS nanostructures were investigated. X-ray diffraction analysis indicated the formation of CuS/ZnS phases with good crystallinity. The presence of ZnS on CuS was confirmed by X-ray photoelectron spectroscopy, elemental mapping, scanning electron microscopy and high resolution transmission electron microscopy analyses. CuS/ZnS nanocomposites efficiently decomposed methylene blue (MB) upon irradiation with visible light. The degradation time was 3 times faster than that of bare ZnS and CuS. The scavenger analysis results revealed that photogenerated superoxide (O2-) radicals were the main reactive species for the degradation of MB. The maximum degradation efficiency of 95.51\% was observed within 5 min for samples of 0.050 M CuS/ZnS composites. The obtained results suggested that the enhanced photocatalytic activity was due to the formation of CuS/ZnS heterojunctions which led to the efficient separation of the photoinduced carriers.",

author = "S. Harish and J. Archana and M. Navaneethan and S. Ponnusamy and Ajay Singh and Vinay Gupta and Aswal, \{D. K.\} and H. Ikeda and Y. Hayakawa",

note = "Funding Information: This work was financially supported by (1) Grant-in-Aid for Scientific Research (Chosenteki Houga) (16K14229) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan and (2) the cooperative research projects of the Research Institute of Electronics, Shizuoka University. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2017.",

year = "2017",

doi = "10.1039/c7ra04250g",

language = "British English",

volume = "7",

pages = "34366--34375",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

number = "55",

}

TY - JOUR

T1 - Synergetic effect of CuS@ZnS nanostructures on photocatalytic degradation of organic pollutant under visible light irradiation

AU - Harish, S.

AU - Archana, J.

AU - Navaneethan, M.

AU - Ponnusamy, S.

AU - Singh, Ajay

AU - Gupta, Vinay

AU - Aswal, D. K.

AU - Ikeda, H.

AU - Hayakawa, Y.

N1 - Funding Information: This work was financially supported by (1) Grant-in-Aid for Scientific Research (Chosenteki Houga) (16K14229) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan and (2) the cooperative research projects of the Research Institute of Electronics, Shizuoka University. Publisher Copyright: © The Royal Society of Chemistry 2017.

PY - 2017

Y1 - 2017

N2 - Ultrafast visible light active CuS/ZnS nanostructured photocatalysts were synthesized by a hydrothermal method. The effect of the CuS concentration on the morphological, structural and optical properties of ZnS nanostructures were investigated. X-ray diffraction analysis indicated the formation of CuS/ZnS phases with good crystallinity. The presence of ZnS on CuS was confirmed by X-ray photoelectron spectroscopy, elemental mapping, scanning electron microscopy and high resolution transmission electron microscopy analyses. CuS/ZnS nanocomposites efficiently decomposed methylene blue (MB) upon irradiation with visible light. The degradation time was 3 times faster than that of bare ZnS and CuS. The scavenger analysis results revealed that photogenerated superoxide (O2-) radicals were the main reactive species for the degradation of MB. The maximum degradation efficiency of 95.51% was observed within 5 min for samples of 0.050 M CuS/ZnS composites. The obtained results suggested that the enhanced photocatalytic activity was due to the formation of CuS/ZnS heterojunctions which led to the efficient separation of the photoinduced carriers.

AB - Ultrafast visible light active CuS/ZnS nanostructured photocatalysts were synthesized by a hydrothermal method. The effect of the CuS concentration on the morphological, structural and optical properties of ZnS nanostructures were investigated. X-ray diffraction analysis indicated the formation of CuS/ZnS phases with good crystallinity. The presence of ZnS on CuS was confirmed by X-ray photoelectron spectroscopy, elemental mapping, scanning electron microscopy and high resolution transmission electron microscopy analyses. CuS/ZnS nanocomposites efficiently decomposed methylene blue (MB) upon irradiation with visible light. The degradation time was 3 times faster than that of bare ZnS and CuS. The scavenger analysis results revealed that photogenerated superoxide (O2-) radicals were the main reactive species for the degradation of MB. The maximum degradation efficiency of 95.51% was observed within 5 min for samples of 0.050 M CuS/ZnS composites. The obtained results suggested that the enhanced photocatalytic activity was due to the formation of CuS/ZnS heterojunctions which led to the efficient separation of the photoinduced carriers.

UR - https://www.scopus.com/pages/publications/85023757388

U2 - 10.1039/c7ra04250g

DO - 10.1039/c7ra04250g

M3 - Article

AN - SCOPUS:85023757388

SN - 2046-2069

VL - 7

SP - 34366

EP - 34375

JO - RSC Advances

JF - RSC Advances

IS - 55

ER -

Synergetic effect of CuS@ZnS nanostructures on photocatalytic degradation of organic pollutant under visible light irradiation

Abstract

Access to Document

OpenUrl availability

Other files and links

Fingerprint

Cite this