Graphitic carbon nitride decorated with S,N co-doped graphene quantum dots for enhanced visible-light-driven photocatalysis

Cai, Aijun; Wang, Qian; Chang, Yongfang; Wang, Xiuping

doi:10.1016/j.jallcom.2016.09.030

Cited by 106 publications

(40 citation statements)

References 46 publications

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“…36 In addition, the bending vibration of N-H also appears between 700 cm À1 and 830 cm À1 , specically, the peaks at 1646 cm À1 , 1481 cm À1 , 1334 cm À1 and 1270 cm À1 are assigned to the typical stretching modes of N-C]O, heterocyclic C-N-C, N-(C) 3 and C-N-C bonds. 37 These results conrmed that the N-containing groups were formed via chemical reaction between ethylenediamine and microcrystalline cellulose, and N species was efficiently doped into the framework of the CQDs.…”

Section: Synthesis and Structure Characterization Of Ncqdsmentioning

confidence: 91%

Hydrothermal synthesis of nitrogen-doped carbon quantum dots from microcrystalline cellulose for the detection of Fe³⁺ ions in an acidic environment

et al. 2017

RSC Adv.

210

123

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Section: Synthesis and Structure Characterization Of Ncqdsmentioning

confidence: 91%

Hydrothermal synthesis of nitrogen-doped carbon quantum dots from microcrystalline cellulose for the detection of Fe³⁺ ions in an acidic environment

et al. 2017

RSC Adv.

210

123

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“…Cai et al prepared S, N co-doped CDs/g-C 3 N 4 nanocomposites for the high catalytic performance in degrading RhB under visible light irradiation. They observed that S, N doped GDs/g-C 3 N 4 nanocomposites exhibit better photocatalytic activity than pure g-C 3 N 4 due to electron transfer from the CB of g-C 3 N 4 to CB of S, N doped GDs/g-C 3 N 4 (CDs act as an electron reservoir), results in the efficient separation of photogenerated electrons and holes [ 161 ]. Recently Zhang et al fabricated CDs/La 2 Ti 2 O 7 nanocomposites for the degradation of RhB.…”

Section: Applications Of Cdsmentioning

confidence: 99%

Small molecules derived carbon dots: synthesis and applications in sensing, catalysis, imaging, and biomedicine

2019

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Carbon dots (CDs) are the new fellow of carbon family having a size less than 10 nm and attracted much attention of researchers since the last decade because of their unique characteristics, such as inexpensive and facile synthesis methods, easy surface modification, excellent photoluminescence, outstanding water solubility, and low toxicity. Due to these unique characteristics, CDs have been extensively applied in different kind of scientific disciplines. For example in the photocatalytic reactions, drug-gene delivery system, in vitro and in vivo bioimaging, chemical and biological sensing as well as photodynamic and photothermal therapies. Mainly two types of methods are available in the literature to synthesize CDs: the top-down approach, which refers to breaking down a more massive carbon structure into nanoscale particles; the bottom-up approach, which refers to the synthesis of CDs from smaller carbon units (small organic molecules). Many review articles are available in the literature regarding the synthesis and applications of CDs. However, there is no such review article describing the synthesis and complete application of CDs derived from small organic molecules together. In this review, we have summarized the progress of research on CDs regarding its synthesis from small organic molecules (bottom-up approach) via hydrothermal/solvothermal treatment, microwave irradiation, ultrasonic treatment, and thermal decomposition techniques as well as applications in the field of bioimaging, drug/gene delivery system, fluorescence-based sensing, photocatalytic reactions, photo-dynamic therapy (PDT) and photo-thermal (PTT) therapy based on the available literature. Finally, the challenges and future direction of CDs are discussed.

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“…[ 8,9 ] Compared with common semiconductors, GQDs are more environment friendly, low cost and photo‐stability. [ 10–12 ] High‐quality colloidal GQDs with excellent optical properties such as the broad‐spectrum response of visible light and various fluorescent are very suitable in diverse applications, such as bioimaging, [ 13,14 ] light emitting diodes [ 15–17 ] and photocatalysis, [ 18–20 ] especially CO 2 reduction. [ 21–23 ] Despite these significant advantages, pure GQDs nanoparticles have a poor CO 2 reduction catalytic property owing to their large exciton binding energy, [ 24 ] which greatly decreases the capability of separating electron–hole pairs.…”

Section: Introductionmentioning

confidence: 99%

Boosting Visible‐Light Photocatalytic Performance for CO₂ Reduction via Hydroxylated Graphene Quantum Dots Sensitized MIL‐101(Fe)

Liu

Tang

et al. 2020

Adv Materials Inter

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Herein, a one‐step solvothermal method that shows incorporation of the graphene quantum dots (GQDs) on Fe‐based metal organic frameworks (MOFs) [MIL‐101(Fe)] to form GQD/MIL‐101(Fe) (G/M101) composites is reported. MIL‐101(Fe) with the sensitization of GQDs could significantly improve the photocatalytic reduction efficiency of CO2 to generate CO. The prepared composites exhibit excellent optical properties and the photocatalytic activity of G/M101 composites is relevant to GQDs ratio. The CO production rate over G/M101‐5% (224.71 µmol h−1 g−1) is 5 times higher than that of MIL‐101(Fe) (46.20 µmol h−1 g−1). The promising photocatalytic activity of G/M101‐5% strongly depends on the beneficial separation and transfer of photoinduced carriers via a charge migration between GQDs and MIL‐101(Fe). The microstructures and interfacial structures of the G/M101‐5% composite demonstrate that GQDs are closely loaded on the surface of MIL‐101 (Fe), and thus favors to the photoreduction according to their sp2 bonding. This work may figure a new way for the synthesis of photocatalysts for the application on carbon stabilization.

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Graphitic carbon nitride decorated with S,N co-doped graphene quantum dots for enhanced visible-light-driven photocatalysis

Cited by 106 publications

References 46 publications

Hydrothermal synthesis of nitrogen-doped carbon quantum dots from microcrystalline cellulose for the detection of Fe³⁺ ions in an acidic environment

Hydrothermal synthesis of nitrogen-doped carbon quantum dots from microcrystalline cellulose for the detection of Fe³⁺ ions in an acidic environment

Small molecules derived carbon dots: synthesis and applications in sensing, catalysis, imaging, and biomedicine

Boosting Visible‐Light Photocatalytic Performance for CO₂ Reduction via Hydroxylated Graphene Quantum Dots Sensitized MIL‐101(Fe)

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Graphitic carbon nitride decorated with S,N co-doped graphene quantum dots for enhanced visible-light-driven photocatalysis

Cited by 106 publications

References 46 publications

Hydrothermal synthesis of nitrogen-doped carbon quantum dots from microcrystalline cellulose for the detection of Fe3+ ions in an acidic environment

Hydrothermal synthesis of nitrogen-doped carbon quantum dots from microcrystalline cellulose for the detection of Fe3+ ions in an acidic environment

Small molecules derived carbon dots: synthesis and applications in sensing, catalysis, imaging, and biomedicine

Boosting Visible‐Light Photocatalytic Performance for CO2 Reduction via Hydroxylated Graphene Quantum Dots Sensitized MIL‐101(Fe)

Contact Info

Product

Resources

About

Hydrothermal synthesis of nitrogen-doped carbon quantum dots from microcrystalline cellulose for the detection of Fe³⁺ ions in an acidic environment

Hydrothermal synthesis of nitrogen-doped carbon quantum dots from microcrystalline cellulose for the detection of Fe³⁺ ions in an acidic environment

Boosting Visible‐Light Photocatalytic Performance for CO₂ Reduction via Hydroxylated Graphene Quantum Dots Sensitized MIL‐101(Fe)