Details
| Original language | English |
|---|---|
| Pages (from-to) | 59-68 |
| Number of pages | 10 |
| Journal | Journal of Physics and Chemistry of Solids |
| Volume | 115 |
| Early online date | 31 Oct 2017 |
| Publication status | Published - Apr 2018 |
Abstract
Novel visible-light-driven 3D flower-like CuS/g-C 3N 4 composites have been synthesized by different wt% of CuS using hydrothermal method and characterized by standard analytical techniques such as XRD, FTIR, XPS, BET, UV–Vis DRS spectroscopy, SEM–EDS, and TEM. SEM and TEM analyses showed an intimate interfacial contact between flower-like CuS and g-C 3N 4 sheet. The synthesized composite materials (CuS/g-C 3N 4) showed excellent photocatalytic activity for the decolorization of methylene blue (MB) in aqueous suspension under visible-light irradiation, compared with pure CuS and g-C 3N 4. Among various composites of CuS/g-C 3N 4, 10 wt% of CuS showed highest photocatalytic activity for the decolorization of dye (MB). This remarkably improved photocatalytic performance of the synthesized materials could be attributed to the synergistic interaction between CuS and g-C 3N 4, leading to prolonged lifetime of photo-generated e – and h + pair through the Z-scheme system. A probable Z-scheme mechanism explaining the origin of enhanced performance of the composite material has been proposed. This work not only provides a facile way to synthesize 3D flower-like heterostructure, but also renders rational design for the development of highly efficient Z-scheme photocatalytic systems.
Keywords
- Flower-like CuS/g-C N composites, Methylene Blue degradation, Photocatalysis, Visible-light-active photocatalyst
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Journal of Physics and Chemistry of Solids, Vol. 115, 04.2018, p. 59-68.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - One-pot, self-assembled hydrothermal synthesis of 3D flower-like CuS/g-C3N4 composite with enhanced photocatalytic activity under visible-light irradiation
AU - Khan, A.
AU - Alam, U.
AU - Raza, W.
AU - Bahnemann, D.
AU - Muneer, M.
N1 - Funding information: Financial support to research projects from Ministry of Mines, Government of India, New Delhi , Alexander von Humboldt Foundation, Germany , under the research group linkage program, and DRS, FIST, & PURSE support to the Department of Chemistry, Aligarh Muslim University (Aligarh) are gratefully acknowledged. Azam Khan is thankful to University Grants Commission (UGC), New Delhi, India, for Senior Research Fellowship (SRF).
PY - 2018/4
Y1 - 2018/4
N2 - Novel visible-light-driven 3D flower-like CuS/g-C 3N 4 composites have been synthesized by different wt% of CuS using hydrothermal method and characterized by standard analytical techniques such as XRD, FTIR, XPS, BET, UV–Vis DRS spectroscopy, SEM–EDS, and TEM. SEM and TEM analyses showed an intimate interfacial contact between flower-like CuS and g-C 3N 4 sheet. The synthesized composite materials (CuS/g-C 3N 4) showed excellent photocatalytic activity for the decolorization of methylene blue (MB) in aqueous suspension under visible-light irradiation, compared with pure CuS and g-C 3N 4. Among various composites of CuS/g-C 3N 4, 10 wt% of CuS showed highest photocatalytic activity for the decolorization of dye (MB). This remarkably improved photocatalytic performance of the synthesized materials could be attributed to the synergistic interaction between CuS and g-C 3N 4, leading to prolonged lifetime of photo-generated e – and h + pair through the Z-scheme system. A probable Z-scheme mechanism explaining the origin of enhanced performance of the composite material has been proposed. This work not only provides a facile way to synthesize 3D flower-like heterostructure, but also renders rational design for the development of highly efficient Z-scheme photocatalytic systems.
AB - Novel visible-light-driven 3D flower-like CuS/g-C 3N 4 composites have been synthesized by different wt% of CuS using hydrothermal method and characterized by standard analytical techniques such as XRD, FTIR, XPS, BET, UV–Vis DRS spectroscopy, SEM–EDS, and TEM. SEM and TEM analyses showed an intimate interfacial contact between flower-like CuS and g-C 3N 4 sheet. The synthesized composite materials (CuS/g-C 3N 4) showed excellent photocatalytic activity for the decolorization of methylene blue (MB) in aqueous suspension under visible-light irradiation, compared with pure CuS and g-C 3N 4. Among various composites of CuS/g-C 3N 4, 10 wt% of CuS showed highest photocatalytic activity for the decolorization of dye (MB). This remarkably improved photocatalytic performance of the synthesized materials could be attributed to the synergistic interaction between CuS and g-C 3N 4, leading to prolonged lifetime of photo-generated e – and h + pair through the Z-scheme system. A probable Z-scheme mechanism explaining the origin of enhanced performance of the composite material has been proposed. This work not only provides a facile way to synthesize 3D flower-like heterostructure, but also renders rational design for the development of highly efficient Z-scheme photocatalytic systems.
KW - Flower-like CuS/g-C N composites
KW - Methylene Blue degradation
KW - Photocatalysis
KW - Visible-light-active photocatalyst
UR - http://www.scopus.com/inward/record.url?scp=85038823012&partnerID=8YFLogxK
U2 - 10.1016/j.jpcs.2017.10.032
DO - 10.1016/j.jpcs.2017.10.032
M3 - Article
VL - 115
SP - 59
EP - 68
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
ER -