Unveiling the Photocatalytic Activity of Carbon Dots/g-C3N4 Nanocomposite for the O-Arylation of 2-Chloroquinoline-3-carbaldehydes DOI Open Access

Ravichandran Manjupriya,

Selvaraj Mohana Roopan

Catalysts, Journal Year: 2023, Volume and Issue: 13(2), P. 308 - 308

Published: Jan. 30, 2023

Visible-light-active, organic, heterogeneous photocatalysts offer an ecologically friendly and sustainable alternative to traditional metal-based catalysts. In this work, we report the microwave synthesis of nanocarbon dots (CDs), loaded with graphitic carbon nitride (g-C3N4). The fabricated nanocomposite was shown exhibit various properties, such as Schottky heterojunction. optical functional group analysis, surface morphology, crystallinity, chemical stability, electronic pore size distribution synthesized were analyzed by Ultraviolet-Diffuse Reflectance Spectroscopy (UV-DRS), Photoluminescence (PL), Fourier Transform Infrared (FTIR), Transmission Electron Microscopy (TEM), X-Ray Diffraction (XRD), Zeta potential, Photoelectron (XPS), Brunauer–Emmett–Teller (BET). Until now, best our knowledge, there have been no reports published on light-assisted O-arylation 2-chloroquinoline-3-carbaldehyde. Therefore, explored photocatalytic activity in production O-arylated This facile technique uses a blue LED light source non-conventional operates under moderate conditions, resulting useful products. experimental data shows good recyclability catalyst for up five cycles without loss catalytic activity, simple operational protocol, easy recoverability catalyst, product yields (65–90%) within 12–24 h. Additionally, preliminary mechanistic investigations are discussed. results show that phenoxy quinoline-3-carbaldehyde radicals generated upon irradiation during course reaction responsible C-O bond formation, which O-arylation. present study clearly indicates 0D/2D nanocomposites bright future metal-free, suitable organic reactions.

Language: Английский

Chemical Bonding of g-C3N4/UiO-66(Zr/Ce) from Zr and Ce Single Atoms for Efficient Photocatalytic Reduction of CO2 under Visible Light DOI
Weiwei Wang, Shaojia Song, Ping Wang

et al.

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(7), P. 4597 - 4610

Published: March 21, 2023

The most promising approach to mitigating the greenhouse effect and tackling energy crisis is convert carbon dioxide into valuable liquid fuels through artificial photosynthesis. Nevertheless, photocatalysts have poor product selectivity, low catalytic performance, cycling stability. Herein, we synthesized novel UiO-66(Zr/Ce) nanosheets bonding on g-C3N4 [g-C3N4/UiO-66(Zr/Ce)] by an in situ method using single atoms of Zr Ce as metal sources, are linked via N–Zr/Ce–O bonds g-C3N4/UiO-66 interface. Chemical close contact between with a two-dimensional structure accelerate transmission electrons significantly suppresses quenching photogenerated carriers. Furthermore, doping g-C3N4/UiO-66(Zr/Ce) concentrates around atoms, making multielectron CO2 reduction reaction more favorable. Without adding any sacrificial agent, shows efficient CH3OH (54.71 μmol h–1 g–1) C2H5OH (38.10 g–1). Moreover, TOF value composite catalyst 28 times that bulk UiO-66(Zr/Ce). It exhibits excellent stability thanks strong coordination catalyst. After 12 cycles, photocatalytic performance does not decrease.

Language: Английский

Citations

82
Insight into the degradation mechanism of mixed VOCs oxidation over Pd/UiO-66(Ce) catalysts: Combination of operando spectroscopy and theoretical calculation DOI
Zhihui Lu, Lei Guo, Fukun Bi

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129443 - 129443

Published: Sept. 1, 2024

Language: Английский

Citations

47
One-pot synthesis of oxygen-vacancy-rich Cu-doped UiO-66 for collaborative adsorption and photocatalytic degradation of ciprofloxacin DOI

Linmiao Yin,

Dongbo Wang, Xiaopei Li

et al.

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 815, P. 151962 - 151962

Published: Nov. 27, 2021

Language: Английский

Citations

71
Selective adsorption of dyes and pharmaceuticals from water by UiO metal–organic frameworks: A comprehensive review DOI
Zakariyya Uba Zango, Khairulazhar Jumbri, Nonni Soraya Sambudi

et al.

Polyhedron, Journal Year: 2021, Volume and Issue: 210, P. 115515 - 115515

Published: Oct. 4, 2021

Language: Английский

Citations

61
Recent innovations in synthesis/characterization of advanced nano-porous metal-organic frameworks (MOFs); current/future trends with a focus on the smart anti-corrosion features DOI
M.H. Shahini, H. Eivaz Mohammadloo, Mohammad Ramezanzadeh

et al.

Materials Chemistry and Physics, Journal Year: 2021, Volume and Issue: 276, P. 125420 - 125420

Published: Nov. 8, 2021

Language: Английский

Citations

59
Recent advances in metal-organic-framework-based catalysts for thermocatalytic selective oxidation of organic substances DOI
Zhenyu Wu, Yaqiong Li, Can Yang Zhang

et al.

Chem Catalysis, Journal Year: 2022, Volume and Issue: 2(5), P. 1009 - 1045

Published: March 14, 2022

Language: Английский

Citations

50
Synthesis and uranium adsorption studies of UiO-66 (Ce) based metal organic frameworks from aqueous solutions DOI
Nitin Gumber, Rajesh V. Pai, Kaushik Sanyal

et al.

Microporous and Mesoporous Materials, Journal Year: 2022, Volume and Issue: 341, P. 112108 - 112108

Published: July 14, 2022

Language: Английский

Citations

47
“Adsorptive removal of Congo Red dye from its aqueous solution by Ag–Cu–CeO2 nanocomposites: Adsorption kinetics, isotherms, and thermodynamics” DOI Creative Commons
Nitish Semwal, Divya Mahar, Manjunath Chatti

et al.

Heliyon, Journal Year: 2023, Volume and Issue: 9(11), P. e22027 - e22027

Published: Nov. 1, 2023

Eliminating synthetic dyes and organic contaminants from water is crucial for safeguarding human health preserving the environment. In this study, we explored effectiveness of Ag-Cu-CeO2 nanocomposites as adsorbents to remove Congo Red dye water. Three compositions (10:20:70, 15:15:70, 20:10:70) have been synthesized by aqueous coprecipitation method. A comprehensive analysis was performed different techniques including X-ray diffraction, Fourier transform infrared spectroscopy, BET surface area determination, Thermogravimetric analysis, Scanning electron microscopy, TEM. The a dimension 5 ± 1 nm high (51.832-78.361 m2g-1). Among these, nanocomposite with composition 15:15:70 showed highest adsorption capacity 4.71 mg/g (96.83 % removal) 0.8 × 10-4 M (55.6 mg/l) solution at pH values 2 20 °C contact time 3h. data best fitted in Freundlich isotherm pseudo-second-order kinetic model. negative enthalpy variation (-27.57, -26.43, -16.73 kJ/mol) demonstrated that spontaneous exothermic. cycling run mere 12 deactivation after five cycles use thus indicating hold great potential effective eco-friendly

Language: Английский

Citations

27
Construction of S-scheme heterojunction via incorporating g-C3N4 into Ce-based MOFs for promotion of charge-transfer in photocatalytic Cr(VI) detoxification DOI

Moein Darabi Goudarzi,

Negin Khosroshahi,

Atousa Hamlehdar

et al.

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(3), P. 110169 - 110169

Published: May 20, 2023

Language: Английский

Citations

24
Efficient Photocatalytic Oxidative Coupling of Benzylamine over Uranyl–Organic Frameworks DOI
Guang Che, Weiting Yang, Cong Wang

et al.

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(31), P. 12301 - 12307

Published: July 26, 2022

Visible-light-driven organic transformation photocatalyzed by metal–organic frameworks (MOFs) under mild conditions is considered a feasible route to conserve energy and simplify synthesis. Herein, light-sensitized, three-dimensional uranyl–organic framework (HNU-64) with twofold interpenetration its derivatives HNU-64-CH3 HNU-64-Cl functionalized ligands of −CH3 −Cl groups were obtained. These MOFs have broad optical absorption bands suitable band levels in photooxidation, which makes them exhibit high activity selectivity for the photooxidation benzylamine N-benzylbenzoimide conditions. This work provides an efficient simple synthetic option oxidative coupling amines directly produce imines.

Language: Английский

Citations

36