One-step uniformly hybrid carbon quantum dots with high-reactive TiO2 for photocatalytic application

Wang, Wei; Ni, Yaru; Xu, Zhongzi

doi:10.1016/j.jallcom.2014.10.076

Cited by 98 publications

(32 citation statements)

References 37 publications

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“…Subsequently, Li and co‐workers reported composites of CDs and TiO 2 nanoplates exposing a high proportion of reactive (001) facets, which showed higher RhB degradation activity than CD–P25 composites . Xu and co‐workers deposited CDs on reactive anatase (001), (101), and (010) facets, and also similarly observed enhanced photocatalytic activities . These examples indicate that the photocatalytic performance of CD‐based photocatalysts can be improved by coupling with semiconductor photocatalysts preferentially exposing reactive facets.…”

Section: Photocatalytic Degradationmentioning

confidence: 98%

Smart Utilization of Carbon Dots in Semiconductor Photocatalysis

et al. 2016

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Efficient capture of solar energy will be critical to meeting the energy needs of the future. Semiconductor photocatalysis is expected to make an important contribution in this regard, delivering both energy carriers (especially H ) and valuable chemical feedstocks under direct sunlight. Over the past few years, carbon dots (CDs) have emerged as a promising new class of metal-free photocatalyst, displaying semiconductor-like photoelectric properties and showing excellent performance in a wide variety of photoelectrochemical and photocatalytic applications owing to their ease of synthesis, unique structure, adjustable composition, ease of surface functionalization, outstanding electron-transfer efficiency and tunable light-harvesting range (from deep UV to the near-infrared). Here, recent advances in the rational design of CDs-based photocatalysts are highlighted and their applications in photocatalytic environmental remediation, water splitting into hydrogen, CO reduction, and organic synthesis are discussed.

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Section: Photocatalytic Degradationmentioning

confidence: 98%

Smart Utilization of Carbon Dots in Semiconductor Photocatalysis

et al. 2016

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“…The value is slightly smaller than that of bulk anatase TiO 2 particles. The PL spectra can be used to disclose the efficiency of charge carrier trapping, immigration, transfer and separation, and to understand the fate of photo-generated electrons and holes in semiconductor since PL emission results from the recombination of free carriers [30]. Figure 8 shows the PL emission spectra of commercial P25 and dahlia-like TiO 2.…”

Section: Resultsmentioning

confidence: 99%

Facile synthesis and enhanced photocatalytic performance of dahlia-like TiO2 structures via an EDA-assisted hydrothermal method

Fan

Meng

et al. 2016

J Mater Sci: Mater Electron

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Novel dahlia-like TiO 2 structures were successfully synthesized by an ethylenediamine (EDA)-assisted hydrothermal method. The EDA served as ligand and facilitated the growth of dahlia-like TiO 2 structures. Particularly, the dahlia-like TiO 2 structures were built by twodimensional (2D) thin nanosheets, which interconnected with each other. In addition, the dahlia-like TiO 2 structures own relatively large specific surface areas of 158.85 m 2 /g. Furthermore, the dahlia-like TiO 2 structures exhibit higher photocatalytic activity than that of commercial P25 for degradation of Rhodamine under UV light irradiation. The enhanced photocatalytic activity is due to the synergetic effect of the architecture and high BET surface area of the photocatalyst.

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“…Therefore, CQDs have been applied as an efficient component in the design of photocatalysts. Based on successful coupling with semiconductor photocatalysts (such as TiO 2 and ZnO), the catalytic activity of CQDs have been improved by inhibiting photogenerated carrier recombination [77][78][79][80]. CQDs also can broaden the visible light absorption range for other semiconductor photocatalysts (such as Si, Ag 3 PO 4 , CdS, and Bi 2 WO 6 ) [81][82][83][84].…”

Section: Introductionmentioning

confidence: 99%

A Review on Quantum Dots Modified g-C3N4-Based Photocatalysts with Improved Photocatalytic Activity

2020

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In the 21st century, the development of sustainable energy and advanced technologies to cope with energy shortages and environmental pollution has become vital. Semiconductor photocatalysis is a promising technology that can directly convert solar energy to chemical energy and is extensively used for its environmentally-friendly properties. In the field of photocatalysis, graphitic carbon nitride (g-C3N4) has obtained increasing interest due to its unique physicochemical properties. Therefore, numerous researchers have attempted to integrate quantum dots (QDs) with g-C3N4 to optimize the photocatalytic activity. In this review, recent progress in combining g-C3N4 with QDs for synthesizing new photocatalysts was introduced. The methods of QDs/g-C3N4-based photocatalysts synthesis are summarized. Recent studies assessing the application of photocatalytic performance and mechanism of modification of g-C3N4 with carbon quantum dots (CQDs), graphene quantum dots (GQDs), and g-C3N4 QDs are herein discussed. Lastly, challenges and future perspectives of QDs modified g-C3N4-based photocatalysts in photocatalytic applications are discussed. We hope that this review will provide a valuable overview and insight for the promotion of applications of QDs modified g-C3N4 based-photocatalysts.

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One-step uniformly hybrid carbon quantum dots with high-reactive TiO2 for photocatalytic application

Cited by 98 publications

References 37 publications

Smart Utilization of Carbon Dots in Semiconductor Photocatalysis

Smart Utilization of Carbon Dots in Semiconductor Photocatalysis

Facile synthesis and enhanced photocatalytic performance of dahlia-like TiO2 structures via an EDA-assisted hydrothermal method

A Review on Quantum Dots Modified g-C3N4-Based Photocatalysts with Improved Photocatalytic Activity

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