g-C3N4/oxygen-deficient BiOCl nanocomposite assisted by distinguished properties of graphene quantum dots for the efficient photocatalytic removal of organic vapors

Choi, Jong Uk; Jo, Wan-Kuen

doi:10.1016/j.apsusc.2019.07.085

Cited by 23 publications

(16 citation statements)

References 48 publications

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“…[15,19,38,56,65,94,113,119,133] Particularly, engineering hetero-nanomaterials via incorporating two or more disparate semiconductors together at the nanoscale is a powerful technique to accelerate the interfacial photoinduced excitons separation. [36,42,125,130]…”

Section: Polynarymentioning

confidence: 99%

“…[35,137,138] Besides, 2D layered BiOX (X = Cl, I, Br) also attracts lots of attentions ascribed to the inherently indirect transition bandgap, which is firmly against the recombination of charge carriers and help to get highperformance g-C 3 N 4 /CD-based photocatalyst. [36,37,139,140] In detail, the Ag 3 PO 4 and CDs were anchored on the surface of 2D g-C 3 N 4 (Figure 8i) by Miao et al via a facile two-step solution method. [32] The matched energy level forms the Z-scheme type photocatalyst between Ag 3 PO 4 and g-C 3 N 4 , which was confirmed by the generation of •O 2 − radicals.…”

Section: Ternarymentioning

confidence: 99%

“…Photocatalysis is proved to be an available technology, working as a green and efficient route, to manage the sewage when the pollutants are tough to be thoroughly wiped out by wastewater treatment plants. [36,38,97,119,123,141] In this respect, g-C 3 N 4 /CD composites, as a metal-free and sustainable visible-light photocatalyst, have been put into service due to the high-performance in organic pollutants degradation. [33,35,37,44,46,104,110,118,130,134,139,140,164,165] Up to now, the commonly decomposed poisonous substances include gaseous ethylbenzene, hexanal, 2-butoxy ethanol [36,141] and liquidus Rhodamine B, methylene blue, methyl orange, fuchsine, tetracycline, bisphenol A, naproxen, ciprofloxacin, indomethacin, and so forth.…”

Section: Photocatalytic Pollutants Degradationmentioning

confidence: 99%

“…[36,38,97,119,123,141] In this respect, g-C 3 N 4 /CD composites, as a metal-free and sustainable visible-light photocatalyst, have been put into service due to the high-performance in organic pollutants degradation. [33,35,37,44,46,104,110,118,130,134,139,140,164,165] Up to now, the commonly decomposed poisonous substances include gaseous ethylbenzene, hexanal, 2-butoxy ethanol [36,141] and liquidus Rhodamine B, methylene blue, methyl orange, fuchsine, tetracycline, bisphenol A, naproxen, ciprofloxacin, indomethacin, and so forth. [44,45,106,110,140,166,167] Here, some classic masterpieces underlying the photocatalytic degradation of pollutants by g-C 3 N 4 /CDs are introduced in the following, as well as the detailed different classifications of mechanisms.…”

Section: Photocatalytic Pollutants Degradationmentioning

confidence: 99%

“…[29][30][31] Further on, CDs can serve as versatile functions in photocatalytic system, such as electron mediators, electron reservoirs, photosensitizers, spectral converter, and individual photocatalyst. [31][32][33][34][35][36][37] Recently, in order to achieve improved solar energy utilization, higher charge-transfer efficiency, and beneficially photoexcited carriers separation, g-C 3 N 4 was decorated with CDs by lots of skilled incorporation techniques. [31,[38][39][40][41] The role of heterostructures in the g-C 3 N 4 /CDs photocatalytic system has been welldescribed in many fascinating research works.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Efficient Combination of G‐C₃N₄ and CDs for Enhanced Photocatalytic Performance: A Review of Synthesis, Strategies, and Applications

Shi

Yang

et al. 2021

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114

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Recently, heterogeneous photocatalysts have achieved much interest on account of their great potential applications in resolving many tough energy and environmental troubles around the world through an ecologically sustainable way. Heterogeneous nanocomposites composed of graphitic carbon nitride (g-C 3 N 4 ) and carbon dots (CDs) possess broad spectrum absorption, appropriate electronic band structures, rapid carrier mobility, abundant reserves, excellent chemical stability, and facile synthesis methods, which make them promising composite photocatalysts for suitable applications such as photocatalytic solar fuels production and contaminant decomposition. With the rapid development in photocatalysis by hybridization of g-C 3 N 4 and CDs, a systematic summary and prospection of performance improvement are urgent and meaningful. This review first focuses on various kinds of effectively synthetic methods of composites. Following, the strategies available for enhanced performance, including morphology optimization, spectral absorption improvement, ternary or quaternary composition hybrid, lateral or vertical heterostructures construction, heteroatom doping, and so forth, are fully discussed. Then, the applications mainly in efficient photocatalytic hydrogen generation, photocatalytic carbon dioxide reduction, and organic pollutants degradation are systematically demonstrated. Finally, the remaining issues and prospect of further development are proposed as some kind of guidance for powerful combination of g-C 3 N 4 and CDs with high efficiency to photocatalysis.

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Section: Polynarymentioning

confidence: 99%

Section: Ternarymentioning

confidence: 99%

Section: Photocatalytic Pollutants Degradationmentioning

confidence: 99%

Section: Photocatalytic Pollutants Degradationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Efficient Combination of G‐C₃N₄ and CDs for Enhanced Photocatalytic Performance: A Review of Synthesis, Strategies, and Applications

Shi

Yang

et al. 2021

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114

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Z‐type heterojunction of graphene quantum dots/ g‐C ₃ N ₄ / BiOCl with excellent photocatalytic performance for nitrogen fixation

Cai

Maimaitizi

Okitsu

et al. 2022

Intl J of Energy Research

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In this study, a Z-type g-C 3 N 4 /BiOCl composite was synthesized by a one-step hydrothermal technique with varying loading amounts of graphene quantum dots (GQDs) to investigate their photocatalytic activity of N 2 fixation to NH 3 under simulated solar light irradiation. Experimental results showed that the photocatalytic activity of as-prepared GQDs/g-C 3 N 4 /BiOCl (GCNB) was significantly higher than those of pure g-C 3 N 4 and BiOCl, and the rate of NH 3 formation reached 1773.8 μmol/(hÁg cat ), which was 7.3 and 5.2 times greater than those of pure g-C 3 N 4 and BiOCl, respectively. After five cycles of experiments, the N 2 fixation ability of GCNB did not decrease obviously, indicating that GCNB had high photocatalytic stability. The excellent photocatalytic performance of GCNB was attributed to the broad light absorption range of BiOCl/ ultrathin g-C 3 N 4 binary materials and the unique photoelectronic properties of GQDs, which were loaded to form Z-type heterojunctions with a strong redox capability. A Z-type composite photocatalytic mechanism was proposed in this paper, which could significantly improve the charge separation efficiency and maintain a good redox capability. This study could provide an effective method for designing Z-type composite catalysts with high photocatalytic activity. Highlights 1. g-C 3 N 4 can enhance photocatalytic activity by slowing down the recombination of electron-hole pairs.2. GQDs is an excellent electron transport material sandwiched between g-C 3 N 4 and BiOCl.3. GQDs/g-C 3 N 4 /BiOCl composite material had the best performance of photocatalytic ammonia synthesis 4. The fixation mechanism of N 2 in Z-type heterojunction photocatalytic system was investigated.

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Carbon–Graphitic Carbon Nitride Hybrids for Heterogeneous Photocatalysis

Cheng

Zhang

et al. 2020

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124

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Polymeric graphitic carbon nitride (g‐C3N4) and various carbon materials have experienced a renaissance as viable alternates in photocatalysis due to their captivating metal‐free features, favorable photoelectric properties, and economic adaptabilities. Although numerous efforts have focused on the integration of both materials with optimized photocatalytic performance in recent years, the direct parameters for this emerging enhancement are not fully summarized yet. Fully understanding the synergistic effects between g‐C3N4 and carbon materials on photocatalytic action is vital to further development of metal‐free semiconductors in future studies. Here, recent advances of carbon/g‐C3N4 hybrids on various photocatalytic applications are reviewed. The dominant governing factors by inducing carbon into g‐C3N4 photocatalysts with involving photocatalytic mechanism are highlighted. Five typical carbon‐induced enhancement effects are mainly discussed here, i.e., local electric modification, band structure tailoring, multiple charge carrier activation, chemical group functionalization, and abundant surface‐modified engineering. Photocatalytic performance of carbon‐induced g‐C3N4 photocatalysts for addressing directly both the renewable energy storage and environmental remediation is also summarized. Finally, perspectives and ongoing challenges encountered in the development of metal‐free carbon‐induced g‐C3N4 photocatalysts are presented.

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g-C3N4/oxygen-deficient BiOCl nanocomposite assisted by distinguished properties of graphene quantum dots for the efficient photocatalytic removal of organic vapors

Cited by 23 publications

References 48 publications

Efficient Combination of G‐C₃N₄ and CDs for Enhanced Photocatalytic Performance: A Review of Synthesis, Strategies, and Applications

Efficient Combination of G‐C₃N₄ and CDs for Enhanced Photocatalytic Performance: A Review of Synthesis, Strategies, and Applications

Z‐type heterojunction of graphene quantum dots/ g‐C ₃ N ₄ / BiOCl with excellent photocatalytic performance for nitrogen fixation

Carbon–Graphitic Carbon Nitride Hybrids for Heterogeneous Photocatalysis

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g-C3N4/oxygen-deficient BiOCl nanocomposite assisted by distinguished properties of graphene quantum dots for the efficient photocatalytic removal of organic vapors

Cited by 23 publications

References 48 publications

Efficient Combination of G‐C3N4 and CDs for Enhanced Photocatalytic Performance: A Review of Synthesis, Strategies, and Applications

Efficient Combination of G‐C3N4 and CDs for Enhanced Photocatalytic Performance: A Review of Synthesis, Strategies, and Applications

Z‐type heterojunction of graphene quantum dots/ g‐C 3 N 4 / BiOCl with excellent photocatalytic performance for nitrogen fixation

Carbon–Graphitic Carbon Nitride Hybrids for Heterogeneous Photocatalysis

Contact Info

Product

Resources

About

Efficient Combination of G‐C₃N₄ and CDs for Enhanced Photocatalytic Performance: A Review of Synthesis, Strategies, and Applications

Efficient Combination of G‐C₃N₄ and CDs for Enhanced Photocatalytic Performance: A Review of Synthesis, Strategies, and Applications

Z‐type heterojunction of graphene quantum dots/ g‐C ₃ N ₄ / BiOCl with excellent photocatalytic performance for nitrogen fixation