A novel dual-ligand Fe-based MOFs synthesized with dielectric barrier discharge (DBD) plasma as efficient photocatalysts

Published on Oct 15, 2021in Journal of Molecular Liquids5.065
· DOI :10.1016/J.MOLLIQ.2021.117290
Xianghui Jin (QUST: Qingdao University of Science and Technology), Tao Tang (QUST: Qingdao University of Science and Technology)+ 2 AuthorsDongyan Xu4
Estimated H-index: 4
(QUST: Qingdao University of Science and Technology)
Source
Abstract
Abstract null null A novel dual-ligand Fe-based MOFs (D-Fe-MOFs) was synthesized with dielectric barrier discharge (DBD) plasma for the first time, which exhibited efficient simulated solar light photocatalytic performance. 1,3,5-Benzenetricarboxylicacid (H3BTC) and 2-methylimidazole (2MI) were used as organic ligands for D-Fe-MOFs synthesis. Compared with S-Fe-MOFs, which used H3BTC as organic ligand, D-Fe-MOFs showed larger specific surface area and larger pore volume. The molar ratio of different organic ligands had a great influence on the photocatalytic performance of the catalyst, and H3BTC:2MI = 1:1 was the most beneficial to the photocatalytic performance. D-Fe-MOFs synthesized under the conditions of discharge voltage 15.6 kV, discharge current 1.5A and discharge time 1.5 h had higher thermal stability and showed high photocatalytic performance with degradation rate of 97% in 48 min for MO (20 mg/L) under simulated solar light. D-Fe-MOFs synthesized with DBD plasma exhibited sufficient conduction and valence band positions, which was beneficial for photocatalysis, where ·O2–, ·OH and h+played important roles.
References50
Newest
#1Aleksander Ejsmont (Adam Mickiewicz University in Poznań)H-Index: 3
#2Jacopo Andreo (Ikerbasque)H-Index: 2
Last. Joanna Goscianska (Adam Mickiewicz University in Poznań)H-Index: 21
view all 9 authors...
Abstract Metal–organic frameworks (MOFs) are exciting materials due to their extensive applicability in a multitude of modern technological fields. Their most prominent characteristic and primary origin of their widespread success is the exceptional variety of their structures, which we termed ‘reticular diversity’. Naturally, the ever-emerging applications of MOFs made it increasingly common that researchers from various areas delve into reticular chemistry to overcome their scientific challeng...
8 CitationsSource
#1Abhijit N. Kadam (Gachon University)H-Index: 20
#2Chinna Bathula (Dongguk University)H-Index: 12
Last. Sang-Wha Lee (Gachon University)H-Index: 21
view all 3 authors...
Abstract Stability of the photocatalyst, maximum solar energy harvesting and effective photogenerated charge carrier separation are yet demanding key features of the photocatalysis for pollutant abetment and photo-electrochemical applications. Herein, we report the in situ solvothermal synthesis of CdS-Bi2MoO6 core-shell heterostructures (CdS-Bi2MoO6 CSHs) for the photocatalytic elimination of methyl orange (MO) under visible light. The as-synthesized CdS-Bi2MoO6 CSHs exhibited highest photocata...
4 CitationsSource
#1Xumei Tao (QUST: Qingdao University of Science and Technology)H-Index: 8
#2Xinjie Yuan (QUST: Qingdao University of Science and Technology)H-Index: 1
Last. Liang Huang (QUST: Qingdao University of Science and Technology)H-Index: 5
view all 3 authors...
Abstract Fe-MOFs with FeSO4·7H2O and FeCl3·6H2O precursor were successfully prepared by dielectric barrier discharge (DBD) plasma method to regulate the Fe(II)/Fe(III) ratios. Different Fe(II)/Fe(III) ratios of Fe-MOFs were studied to reveal the catalytic mechanism of degradation in DBD plasma/Fenton-like system. Herein, for the first time, Fe-MOFs could be transformed between Fe(II) unsaturated metal sites (CUS) and Fe(III)CUS by the photo-generated electron (e-) generated with plasma, thereby ...
4 CitationsSource
#1Abhijit N. Kadam (Gachon University)H-Index: 20
#2Hansang Kim (Gachon University)H-Index: 12
Last. Sang-Wha Lee (Gachon University)H-Index: 21
view all 3 authors...
Abstract Developing one-step modification strategy for highly efficient metal-free g-C3N4 photocatalyst has always been challenging and yet demanding. In this study, we have demonstrated an in-situ low-temperature production of porous S-doped g-C3N4 nanosheets, using ammonium chloride (NH4Cl) as a gaseous-bubble template (GBT) to boost the visible-light photocatalytic degradation of organic pollutant dyes. The photocatalytic activities of GBT-induced porous S-doped g-C3N4 nanosheets (so-called p...
10 CitationsSource
#1Vy Anh Tran (Gachon University)H-Index: 7
#2Abhijit N. Kadam (Gachon University)H-Index: 20
Last. Sang-Wha Lee (Gachon University)H-Index: 21
view all 3 authors...
Abstract Zeolite-Imidazolate-Framework-8 (ZIF8) is a typical porous material obtained by strong coordination of Zn2+ ions with imidazole organic linkers. By judicious choice of constituents, ZIF8 can reveal a huge surface area, chemical stability, and well defined pore volume. In this work, well-synthesized ZIF8 exhibited the high adsorption capacity for methyl orange (MO) (19.4 mg of MO/g of ZIF8) via electrostatic, hydrogen bonding, and π-π interactions/stacking interactions. The irradiation o...
28 CitationsSource
#2Yun-long HeH-Index: 1
Last. Kinnor Chattopadhyay (U of T: University of Toronto)H-Index: 15
view all 6 authors...
Abstract Waelz slag, which is a Fe-bearing hazardous waste, was applied as the raw material in the synthesis of M-Fe3O4@Fe2O3 (M = Al, Zn, Cu, and Mn) nanoparticles, which are potential photocatalysts. Through acidolysis, 97.23% of Fe and most of the valuable metals were extracted from this slag. Using sol-gel processes, designed Fe3O4@Fe2O3 nanoparticles doped with multiple elements were systematically synthesised and characterised using X-ray diffraction, field emission scanning electron micro...
8 CitationsSource
#1Xumei Tao (QUST: Qingdao University of Science and Technology)H-Index: 8
#2Chen Yang (QUST: Qingdao University of Science and Technology)H-Index: 2
Last. Shuyong ShangH-Index: 2
view all 4 authors...
Abstract Plasma assisted preparation of ZnCuFeCr layered double hydroxides used as photocatalyst showed excellent photocatalytic performance on methyl orange degradation under visible light. The catalysts were characterized by XRD, SEM, XPS, BET, UV-Vis, EPR and PL. Compared with the traditional co-precipitation method, the plasma-assisted preparation of layered double hydroxides had obvious advantages of visible light photocatalysis. Plasma assisted preparation resulted in a tighter arrangement...
8 CitationsSource
#1F.Z. Akika (University of Jijel)H-Index: 4
#2M. BenamiraH-Index: 14
Last. Sefik Suzer (Bilkent University)H-Index: 31
view all 6 authors...
Abstract Cu-doped ZnAl2O4 spinel oxides (Zn(1-x)CuxAl2O4, 0.0 ≤ x ≤ 1.0) were synthesized by co-precipitation method at 800 °C. The X-ray diffraction analysis of the as-prepared powders confirmed a spinel structure with a space group Fd-3 m. XPS was used to investigate the state of the material surface and the elemental composition. The SEM image confirmed the presence of nano spherical particles. The optical properties were characterized by UV–Vis diffuse reflectance and all band gap values, in...
20 CitationsSource
#1N. DoufarH-Index: 1
#2M. Benamira (University of Nantes)H-Index: 14
Last. M.T. Caldes (University of Nantes)H-Index: 7
view all 6 authors...
Abstract In this work, we are interested by the photocatalytic activity under sunlight irradiation of Fe-doped ZrO2 prepared by co-precipitation. The structural and photophysical properties of the catalysts have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), BET method and UV–Vis diffuse reflectance. The results show that Fe-doped ZrO2 exhibits higher photocatalytic activity than that of both ZrO2 and commercial TiO2 P25...
31 CitationsSource
Abstract In the present work, ZnO/g-C3N4 photocatalysts were synthesized via a simple calcination method. The physical properties of the obtained ZnO/g-C3N4 nanocomposites were characterized by various physicochemical techniques. The photocatalytic activity of the photocatalysts was investigated by the degradation of methyl orange (MO) and 4-chlorophenol (4-CP) under visible light irradiation. Especially, the photocatalytic efficiency was the highest when the percentage of ZnO was 10%. However, ...
20 CitationsSource
Cited By0
Newest