A facile fabrication of Br-modified g-C3N4/rGO composite catalyst for enhanced visible photocatalytic activity towards the degradation of harmful dyes

Kasinathan, Maruthathurai; Thiripuranthagan, SiRvakumar; Sivakumar, A.

doi:10.1016/j.materresbull.2020.110870

Cited by 26 publications

(9 citation statements)

References 83 publications

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“…In contrast to other membranes, this membrane detected R6G with a detection limit of 5.0 × 10 −14 M [ 81 ]. To diminish the recombination ratio of electron-hole pairs created by g-C 3 N 4 based membranes, RGO that is essentially derived from GO, might be used as an electron acceptor [ 87 ]. Chinese researchers in 2016 built RGO/CA/CNNS employing RGO and CNNS on CA membrane.…”

Section: Applications Of G-c 3 N 4 ...mentioning

confidence: 99%

Synthesis and applications of graphitic carbon nitride (g-C3N4) based membranes for wastewater treatment: A critical review

Qamar

Javed

Shahid

et al. 2023

Heliyon

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Section: Applications Of G-c 3 N 4 ...mentioning

confidence: 99%

Synthesis and applications of graphitic carbon nitride (g-C3N4) based membranes for wastewater treatment: A critical review

Qamar

Javed

Shahid

et al. 2023

Heliyon

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“…The adsorption–desorption isotherms of all catalyst samples exhibited type IV isotherms with a distinct H3 hysteresis loop, indicating the presence of mesoporous structures . In addition, the high-pressure hysteresis loop ( P / P 0 ≥ 0.9) was associated with large pores . As shown in Figure d, the Brunauer–Emmett–Teller (BET) surface areas of CN, F-CN, Cl-CN, Br-CN, and I-CN were 45.015, 77.732, 75.934, 91.660, and 87.400 m 2 /g, respectively, which indicated that the doping of halogen and Ni significantly increased the surface area of the catalyst.…”

Section: Resultsmentioning

confidence: 95%

“…28 In addition, the high-pressure hysteresis loop (P/ P 0 ≥ 0.9) was associated with large pores. 29 As shown in Figure 2d changes the pore volume and diameter of CN, and the loose porous structure and large specific surface area can provide abundant active sites for the catalysts, which was beneficial to the photocatalytic performance. 30 Among them, the Br-CN sample has the largest specific surface area and pore volume.…”

Section: Characterization Of Catalystsmentioning

confidence: 99%

Bridging Effect of Carbon Nitride with More Negative Conduction Potential and Halogens Promotes the Liquid-Phase Oxidation of Aromatic C–H Bonds

Zhu,

Zhao,

et al. 2023

ACS Appl. Mater. Interfaces

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The selective oxidation of benzyl C−H bonds of alkyl aromatic hydrocarbons under solvent-free conditions by using heterogeneous catalysis is a challenging task. In this work, we designed a carbon nitride photocatalyst with a high charge separation efficiency and a directed charge transfer path, which was doped with Ni and Br in the carbon nitride skeleton. Br was deposited directionally onto the electron-rich Ni surface traps to form a bond with Ni, which acted as a charge transfer bridge connecting CN and Br, resulting in a bridging effect. Photogenerated electrons were transferred from Ni target to Br, and electrons were aggregated to form a directional charge transfer path, thereby enhancing the photocatalytic performance of CN. The photocatalyst was utilized for the selective oxidation of ethylbenzene at room temperature, atmospheric pressure, and solvent-free conditions. Under batch conditions simulating solar irradiation, the conversion of ethylbenzene was 43.3% and the selectivity of the product acetophenone was up to 92.0%. With the continuous flow strategy, the conversion of ethylbenzene was increased to 52.4 and 48.1%, respectively, while the selectivity reached 92.7 and 91.0%, and the reaction time was reduced from 24 to 2.1 h. The catalyst was also found to be broadly applicable for the selective oxidation of C−H bonds in the benzyl position of alkyl aromatic hydrocarbons.

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“…Besides, the surface area could be increased due to the presence of CsPbBr 3 quantum dots on Bi 2 WO 6 , which was confirmed by N 2 adsorption-desorption isotherms. The samples presented typical Type-IV adsorption isotherms with a H 3 hysteresis loop ( Figure S1a ), illustrating the porous nature of the catalysts [ 42 ]. Furthermore, the specific surface area of the Bi 2 WO 6 and CsPbBr 3 /Bi 2 WO 6 were compared and CsPbBr 3 /Bi 2 WO 6 exhibited a more than 4-fold larger surface area than that of Bi 2 WO 6 .…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic Degradation of Tobacco Tar Using CsPbBr3 Quantum Dots Modified Bi2WO6 Composite Photocatalyst

et al. 2021

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Polycyclic aromatic hydrocarbons (PAHs) in tobacco tar are regarded as a significant threat to human health. PAHs are formed due to the incomplete combustion of organics in tobacco and cigarette paper. Herein, for the first time, we extended the application of CsPbBr3 quantum dots (CsPbBr3) to the photocatalytic degradation of tobacco tar, which was collected from used cigarette filters. To optimize the photoactivity, CsPbBr3 was coupled with Bi2WO6 for the construction of a type-II photocatalyst. The photocatalytic performance of the CsPbBr3/Bi2WO6 composite was evaluated by the degradation rate of PAHs from tobacco tar under simulated solar irradiation. The results revealed that CsPbBr3/Bi2WO6 possesses a large specific surface area, outstanding absorption ability, good light absorption and rapid charge separation. As a result, in addition to good stability, the composite photocatalyst performed remarkably well in degrading PAHs (over 96% were removed in 50 mins of irradiation by AM 1.5 G). This study sheds light on promising novel applications of halide perovskite.

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A facile fabrication of Br-modified g-C3N4/rGO composite catalyst for enhanced visible photocatalytic activity towards the degradation of harmful dyes

Cited by 26 publications

References 83 publications

Synthesis and applications of graphitic carbon nitride (g-C3N4) based membranes for wastewater treatment: A critical review

Synthesis and applications of graphitic carbon nitride (g-C3N4) based membranes for wastewater treatment: A critical review

Bridging Effect of Carbon Nitride with More Negative Conduction Potential and Halogens Promotes the Liquid-Phase Oxidation of Aromatic C–H Bonds

Photocatalytic Degradation of Tobacco Tar Using CsPbBr3 Quantum Dots Modified Bi2WO6 Composite Photocatalyst

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