Importance of the tuning of band position in optimizing the electronic coupling and photocatalytic activity of nanocomposite

X, Jin; Mok, Eun Kyung; Baek, Ji Won; Park, Sang Hyun; Hwang, Seong Ju

doi:10.1016/j.jssc.2015.07.006

Cited by 4 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be observed that Ag 2 CO 3 are composed of microcubes with the length of ~1.0–5.0 μm in Fig. 5A 22 . Figure 5B clearly shows that the AgSiO samples are sphere-like particles with the sizes of ~50–100 nm 22,23 .…”

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

In-situ synthesis of amorphous silver silicate/carbonate composites for selective visible-light photocatalytic decomposition

Cao

Yang

Deng

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Coupling two different semiconductors to form composite photocatalysts is an extremely significant technique for environmental remediation. Here, a one-step in-situ precipitation method has been developed to prepare amorphous silver silicate/carbonate (AgSiO/Ag2CO3) nanoparticles (NPs) composites, which are well dispersed sphere-like particles with the sizes of around ~50–100 nm. The high-efficiency photocatalytic activities under visible light (VL) have been carefully evaluated, and the AgSiO/Ag2CO3 NPs composites exhibit selective photocatalytic degradations on Methylene Blue (MB) and Rhodamine B (RhB). The maximum degradation rate for MB can reach ~99.1% within ~40 min under VL irradiation, much higher than that of RhB (~12%) in the same condition, which can be ascribed to (I) the smaller molecule size of MB than that of RhB, (II) the fast charge separation between AgSiO NPs and Ag2CO3 NPs, abundant heterojunction interfaces as well as fully exposed reactive sites. These composites are proposed to be an example for the preparation of other silicate composite photocatalysts for practical applications in environmental remediation.

show abstract

Section: Resultsmentioning

confidence: 97%

“…5A 22 . Figure 5B clearly shows that the AgSiO samples are sphere-like particles with the sizes of ~50–100 nm 22,23 . Figure 5C–F indicate that the morphologies of AgSiO/Ag 2 CO 3 with different ratios are similar to AgSiO 24 .…”

Section: Resultsmentioning

confidence: 99%

In-situ synthesis of amorphous silver silicate/carbonate composites for selective visible-light photocatalytic decomposition

Cao

Yang

Deng

et al. 2017

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Among them, the hybridization of two kinds of semiconductors can provide one of the most effective ways to explore efficient visible‐light photocatalysts. As presented in Figure a, both the Ag 2 CO 3 /Ag–layered Ti 5 NbO 14 and Ag 2 CO 3 –N‐doped TiO 2 nanohybrids show much higher photodegradation of 4‐chlorophenol (4‐CP) under visible light than the unhybridized Ag 2 CO 3 because of the strong electronic coupling between Ag 2 CO 3 /Ag and Ti nanosheets . Similarly, a CdS QD@Ag 3 PO 4 nanocomposite exhibits much better photocatalytic degradation of MB and 4‐CP under visible light than the precursors P25, CdS, and Ag 3 PO 4 .…”

Section: Application Of Exfoliated Inorganic Nanosheet‐based Hybrids mentioning

confidence: 99%

Application of Exfoliated Inorganic Nanosheets for Strongly‐Coupled Hybrid Photocatalysts

2018

Self Cite

View full text Add to dashboard Cite

Inorganic 2D nanosheets are important building blocks for synthesizing efficient hybrid photocatalysts because of their advantageous characteristics such as highly anisotropic 2D morphology with subnanometer-level thickness, wide surface area, defect-free tunable surface, chemical composition diversity and crystal structure, and tailorable physicochemical properties. Since most of the components in exfoliated nanosheets are exposed on the surface, an unusually strong chemical interaction and a remarkable electronic coupling can occur in the interface between the exfoliated nanosheets and hybridized nanospecies. Such strong electronic coupling is useful in optimizing the photocatalytic activity of the hybrid material via the suppression of electron-hole recombination, increase of the light absorption region, improved transport of excited charge carriers, and increase of surface reactivity. Herein, several representative examples of inorganic 2D nanosheetbased hybrid photocatalysts are introduced to examine the crucial role of 2D nanosheets in the enhancement of the photocatalytic activity of the hybrid materials. Special emphasis is made regarding the unique hybridization effect of exfoliated 2D nanosheets on the optical properties and electron structure of semiconducting species. Future perspectives for the investigation of the 2D nanosheet-based hybrids are discussed to provide valuable insight for the design and synthesis of highly efficient photocatalysts for producing solar fuels.

show abstract

A visible-light-driven core-shell like Ag2S@Ag2CO3 composite photocatalyst with high performance in pollutants degradation

Wei

Zhou

et al. 2016

Chemosphere

View full text Add to dashboard Cite

Importance of the tuning of band position in optimizing the electronic coupling and photocatalytic activity of nanocomposite

Cited by 4 publications

References 25 publications

In-situ synthesis of amorphous silver silicate/carbonate composites for selective visible-light photocatalytic decomposition

In-situ synthesis of amorphous silver silicate/carbonate composites for selective visible-light photocatalytic decomposition

Application of Exfoliated Inorganic Nanosheets for Strongly‐Coupled Hybrid Photocatalysts

A visible-light-driven core-shell like Ag2S@Ag2CO3 composite photocatalyst with high performance in pollutants degradation

Contact Info

Product

Resources

About