ZnO/CdS Hierarchical Nanospheres for Photoelectrochemical Sensing of Cu<sup>2+</sup>

Shen, Qingming; Zhao, Xiaomei; Zhou, Shiwei; Hou, Wenhua; Zhu, Jun‐Jie

doi:10.1021/jp203868t

Cited by 164 publications

(84 citation statements)

References 38 publications

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“…Then CdS nanocrystals were grown on ZnO nanospheres selectively. UV-Vis absorption spectroscopy of ZnO nanomaterials suggested that the peak at around 370 nm for both films was due to the bandgap of ZnO nanostructures as shown in Figure 4(b) [148]. An extra peak at around 420 nm was also observed by Shen et al for ZnO nanospheres film; its cause was the light scattering which was due to large secondary colloidal spheres.…”

Section: Zno/cds Nanocomposite Photocatalysismentioning

confidence: 53%

“…It has many advantages like the oxidation and reduction processes taking place at different sites. There are also some particular advantages of using the narrow bandgap semiconductors: due to the quantum size effect one can harvest the required bandwidth of optical spectrum by tailoring the particle size; one can achieve the longer charge carrier separation by decreasing electron-hole pair recombination due to charge injection from narrow bandgap semiconductor to wide bandgap semiconductor [148].…”

Section: Photocatalysis By Zno Nanocompositementioning

confidence: 99%

“…Our work is focused on the review of photocatalytic properties of composite nanostructures of ZnO with CdS [81,126,127,145,[148][149][150][151][152][153][154][155][156][157][158][159][160][161][162][163][164][165][166], TiO 2 [167][168][169][170][171][172][173][174][175][176][177], SnO [178], SnO 2 [179][180][181][182][183][184][185][186][187][188][189][190][191][192][193]…”

Section: Photocatalysis By Zno Nanocompositeunclassified

“…The science behind this phenomenon is the quantization size effect which caused the longer wavelength due to large particle size. Hence the light absorption and charge separation were significantly enhanced [148].…”

Section: Zno/cds Nanocomposite Photocatalysismentioning

confidence: 99%

See 3 more Smart Citations

Photocatalysis and Bandgap Engineering Using ZnO Nanocomposites

Johar

Afzal

Alazba

et al. 2015

Advances in Materials Science and Engineering

130

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Nanocomposites have a great potential to work as efficient, multifunctional materials for energy conversion and photoelectrochemical reactions. Nanocomposites may reveal more improved photocatalysis by implying the improvements of their electronic and structural properties than pure photocatalyst. This paper presents the recent work carried out on photoelectrochemical reactions using the composite materials of ZnO with CdS, ZnO with SnO 2 , ZnO with TiO 2 , ZnO with Ag 2 S, and ZnO with graphene and graphene oxide. The photocatalytic efficiency mainly depends upon the light harvesting span of a material, lifetime of photogenerated electron-hole pair, and reactive sites available in the photocatalyst. We reviewed the UV-Vis absorption spectrum of nanocomposite and photodegradation reported by the same material and how photodegradation depends upon the factors described above. Finally the improvement in the absorption band edge of nanocomposite material is discussed.

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Section: Zno/cds Nanocomposite Photocatalysismentioning

confidence: 53%

Section: Photocatalysis By Zno Nanocompositementioning

confidence: 99%

Section: Photocatalysis By Zno Nanocompositeunclassified

Section: Zno/cds Nanocomposite Photocatalysismentioning

confidence: 99%

See 2 more Smart Citations

Photocatalysis and Bandgap Engineering Using ZnO Nanocomposites

Johar

Afzal

Alazba

et al. 2015

Advances in Materials Science and Engineering

130

View full text Add to dashboard Cite

show abstract

“…Several methods of photoelectrochemical selective sensing of Cu 2 þ based on the singal-on/off strategy have been reported (Shen et al, 2011;Wang et al, 2010). Inspired by this thought, our previous work has reported a novel PEC bioassay based on the signalon effect of Cu 2 þ on the C 3 N 4 (Li et al, 2014).…”

Section: Introductionmentioning

confidence: 99%