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Two novel sets of uio-66@metal oxide/graphene oxide Z-scheme heterojunction:Insight into tetracycline and malathion photodegradation

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Journal of Environmental Sciences 2020年第5期32卷 222-236页

作者： Hanieh Fakhri Hasan Bagheri Chemical Injuries Research Center Systems Biology and Poisonings InstituteBaqiyatallah University of Medical SciencesTehranIran

Nowadays,widespread researches have been focused on the development of effective photocatalysts to remove pollutants of the aquatic *** accordance with the universal studies,two new sets of uio-66@metal oxide(including ZnO and TiO2)/graphene oxide heterojunctions were synthesized for photodegradation of aromatic(tetracycline)and nonaromatic(malathion)pollutants which are challenging cases in the *** dosage of the photocatalyst,pH of the solution,the type of metal oxide,and the presence of various scavengers are assayed parameters in this *** the optimum condition,maximum photodegradation efficiency is achieved in 90 min for tetracycline(81%)and malathion(100%)by the uio-66@ZnO/graphene *** superior separation of charge carriers by Z-scheme mechanism,excellent electron mobility on layers of graphene oxide and high surface area are factors that enhanced the ***,in comparison with pure uio-66,the band gaps belong to heterojunctions revealed a red shift in the absorption edge,which can be responsible for more expand adsorption of the solar *** organic carbon analysis verified the decontamination of these pollutants in the *** produced main intermediates during the photocatalytic process were identified and the possible degradation pathway *** general,the superior photocatalytic activity suggests that these designed photocatalysts can be a promising choice for having a clean future.

关键词： Metal-organic framework uio-66 Photodegradation Malathion Tetracycline Z-scheme mechanism

Construction of defect-containing uio-66/MoSe_(2) heterojunctions with superior photocatalytic performance for wastewater treatment and mechanism insight

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Frontiers of Chemical Science and Engineering 2023年第4期17卷 449-459页

作者： Xiao Han Xiaoxuan Wang Jiafang Wang Yingjie Xie Cuiwei Du Chongfei Yu Jinglan Feng Jianhui Sun Shuying Dong School of Environment Henan Normal UniversityXinxiang 453007China Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control Ministry of EducationXinxiang 453007China

Metal-organic frameworks are recognized as promising multifunctional materials,especially metal-organic framework-based photocatalysts,which are considered to be ideal photocatalytic ***,a new type of uio-66/MoSe_(2) composite was prepared using the solvothermal *** optimum composite was selected by adjusting the mass ratio of uio-66 and MoSe_(2).X-ray diffraction analysis showed that the mass ratio influenced the crystal plane exposure rate of the composite,which may have affected its photocatalytic *** composite is composed of ultra-thin flower-like MoSe_(2) that wrapped around cubic uio-66,a structure that increases the abundance of active sites for reactions and is more conducive to the separation of *** photocatalytic properties of the composite were evaluated by measuring the degradation rate of Rhodamine B and the catalyst’s ability to reduce Cr(VI)-containing wastewater under visible light *** B was decolorized completely in 120 min,and most of the Cr(VI)was reduced within 150 *** photochemical mechanism of the complex was studied in *** existence of Mo^(6+)and oxygen vacancies,in addition to the Z-type heterojunction promote the separation of electrons and holes,which enhances the photocatalytic effect.

关键词： uio-66 MoSe_(2) photocatalysis dye-containing wastewater heavy metal wastewater oxygen vacancies

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Metal-organic framework uio-66 membranes

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Frontiers of Chemical Science and Engineering 2020年第2期14卷 216-232页

作者： Xinlei Liu Catalysis Engineering Department of Chemical EngineeringDelft University of Technology2629 HZ DelftThe Netherlands

Metal-organic frameworks(MOFs)have emerged as a class of promising membrane ***-66 is a prototypical and stable MOF material with a number of *** this article,we review five approaches for fabricating uio-66 polycrystalline membranes including synthesis,secondary synthesis,biphase synthesis,gas-phase deposition and electrochemical deposition,as well as their applications in gas separation,pervaporation,nanofiltration and ion *** this basis,we propose possible methods for scalable synthesis of uio-66 membranes and their potential separation applications in the future.

关键词： membrane metal-organic framework uio-66 separation

Low-pressure-RF plasma modification of uio-66 and its application in methylene blue adsorption

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Plasma Science and Technology 2023年第8期25卷 122-129页

作者：周甜杨斗豪王一骏程久珊陈强刘博文刘忠伟 Laboratory of Plasma Physics and Materials Beijing Institute of Graphic CommunicationBeijing 102600People's Republic of China

Defect engineering of metal-organic frameworks has attracted increasing attention in recent years for potential applications in gas storage and *** this study,defective uio-66 is obtained by Ar and H_(2)plasma *** with the pristine uio-66,a new aperture with a size of~4 nm appears for a sample with the plasma modification,indicating the formation of mesopores within uio-66 *** results demonstrate that the pore volume,surface area and the number of Lewis and Br?nsted acid sites can be easily tuned by varying the discharge *** adsorption performance of uio-66 is evaluated for the adsorption of methyl *** comparison to the pristine uio-66 and the sample with H_(2)plasma treatment,the Ar plasma modified sample shows excellent adsorption activity due to the suitable pore size and *** adsorption capacity as high as 40.6 mg·g^(-1)is achieved for the uio-66(Ar)sample.

关键词： Ar plasma uio-66 defects metal-organic frameworks

Benzenesulfonic acid-grafted uio-66 with improved hydrophobicity as a stable Brønsted acid catalyst

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Frontiers of Chemical Science and Engineering 2023年第10期17卷 1389-1398页

作者： Zongliang Kou Guanlun Sun Qiuyan Ding Hong Li Xin Gao Xiaolei Fan Xiaoxia Ou Qinhe Pan School of Chemical Engineering and Technology National Engineering Research Center of Distillation TechnologyCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin UniversityTianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Department of Chemical Engineering School of EngineeringThe University of ManchesterManchester M139PLUK Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute University of Nottingham Ningbo ChinaNingbo 315100China Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources School of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China

Hydrothermal and catalytic stability of uio-66 MOFs with defective structures are critical aspects to be considered in their catalytic applications,especially under the conditions involving water,moisture and/or ***,we report a facile strategy to introduce the macromolecular acid group to uio-66 to improve the stability of the resulting uio-66−PhSO3H MOF in aqueous phase *** detail,uio-66−PhSO3H was obtained by grafting benzenesulfonic acid on the surface of the pristine uio-66 to introduce the hydrophobicity,as well as the Brønsted acidity,then assessed using catalytic hydrolysis of cyclohexyl acetate(to cyclohexanol)in *** introduction of hydrophobic molecules to uio-66 could prevent the material from being attacked by hydroxyl polar molecules effectively,explaining its good structural stability during ***-66−PhSO3H promoted the conversion of cyclohexyl acetate at ca.87%,and its activity and textural properties were basically intact after the cyclic stability *** facile modification strategy can improve the hydrothermal stability of uio-66 significantly,which can expand its catalytic applications in aqueous systems.

关键词： metal−organic frameworks(MOFs) uio-66 hydrolysis of cyclohexyl acetate hydrophobicity Brønsted acidity

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Water adsorption performance of uio-66 modified by MgCl_(2) for heat transformation applications

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Chinese Physics B 2022年第11期31卷 585-592页

作者： Jia-Li Liu Guo-Dong Fu Ping Wu Shang Liu Jin-Guang Yang Shi-Ping Zhang Li Wang Min Xu Xiu-Lan Huai Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing 100083China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China

uio-66 is a potential material for adsorption heat transformation(AHT)with high specific surface area,and excellent thermal and chemical ***,the low water adsorption capacity of uio-66 in the low relative pressure range(0uio-66 modified by MgCl_(2)through using the solvothermal method and impregnation method,and study their water vapor adsorption performances and heat storage *** to the extremely high saturated water uptake and excellent hydrophilicity of MgCl_(2),the water adsorption performance of uio-66 is improved,although the introduction of MgCl_(2)reduces its specific surface area and pore *** water adsorption capacity at P/P_(0)=0.3 and the saturated water adsorption capacity of the uio-66(with MgCl_(2)content of 0.57 wt%)modified by the solvothermal method are 0.27 g/g and 0.57 g/g at 298 K,respectively,which are 68.8%and 32.6%higher than the counterparts of pure uio-66,*** with pure uio-66,the water adsorption capacity of the uio-66(with MgCl_(2)content of 1.02 wt%)modified by the impregnation method is increased by 56.3%and 14.0%at the same pressure,*** 20 water adsorption/desorption cycles,the above two materials show high heat storage densities(~1293 J/g and 1378 J/g).Therein,the uio-66 modified by the solvothermal method exhibits the excellent cyclic *** results suggest that the introduction of an appropriate amount of MgCl_(2)makes uio-66more suitable for AHT applications.

关键词： adsorption heat transformation uio-66 water vapor adsorption MgCl_(2)

Adsorption removal of sulfamethoxazole from water using uio-66 and uio-66-BC composites

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Particuology 2022年第3期20卷 71-78页

作者： Jinbo Ouyang Jian Chen Shaoqing Ma Xiaohong Xing Limin Zhou Zhirong Liu Chuntao Zhang Jiangxi Province Key Laboratory of Synthetic Chemistry East China University of TechnologyNanchang 330013China School of Chemistry and Chemical Engineering Wuhan University of Science and TechnologyWuhan 430081China

The adsorption removal of anti-inflammatory drugs from water by diverse materials has drawn great *** study investigated the adsorption of sulfamethoxazole(SMX)by two types of materials,uio-66 and uio-66-BC *** porous MOF composites with functional groups were synthesized by combining uio-66 with corncob-based biochar at different molar *** results showed that macroporosity of uio-66-BC composites was increased by increasing the ratio of *** was found that uio-66-BC composites displayed highly improved adsorption performance of SMX relative to pristine ***-66-BC(5%)had the highest SMX adsorption capacity,about 2.4 times those of pristine *** was the high surface area of uio-66 and redundant functional groups of biochar that increased the adsorption performance of ***,uio-66-BC can be reused and displayed the competitive adsorption efficiency after successive adsorption,which made it a potential adsorbent for the removal of SMX from water.

关键词： Adsorption uio-66 Biochar Sulfamethoxazole

Synergy of photocatalytic reduction and adsorption for boosting uranium removal with PMo_(12)/uio-66 heterojunction

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Chinese Chemical Letters 2022年第7期33卷 3577-3580页

作者： Zhibin Zhang Zifan Li Zhimin Dong Fengtao Yu Yingcai Wang Youqun Wang Xiaohong Cao Yuhui Liu Yunhai Liu Jiangxi Province Key Laboratory of Synthetic Chemistry East China University of TechnologyNanchang 330013China State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China

In this work,we proposed a new U(Ⅵ)removal strategy combining adsorption and photocatalytic reduction by the PMo_(12)/uio-66 *** PMo_(12)has been encapsulated in the cavities of Ui O-66 by a one-step hydrothermal method,and the PMo_(12)/uio-66 exhibited high adsorption capacity and photocatalytic *** maximal theoretical sorption capacity of U(Ⅵ)on 15%PMo_(12)/uio-66 reached225.36 mg/g and the photoreduction rate of 15%PMo_(12)/uio-66 is about thirty times as much as *** the light irradiation,the photogenerated electrons rapidly transport from uio-66 to PMo_(12),and the photo-generated electrons could efficiently reduce the pre-enriched U(Ⅵ)to U(IV).This work provides new insights into remediation of the radioactive environment.

关键词： uio-66 PMo12 Uranium Adsorption Photocatalytic reduction

Facile Synthesis and Properties of uio-66 Electrode Material for Supercapacitors

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Chinese Journal of Structural Chemistry 2020年第5期39卷 884-888页

作者： WU Yi-Wei YAN Jia-Jun ZHU Mei-Hua GUO Hong-Xu YING Shao-Ming College of Chemistry Chemical Engineering and EnvironmentMinnan Normal UniversityZhangzhou 363000China Fujian Provincial Key Laboratory of Featured Materials in Biochemical Industry College of Chemistry and MaterialsNingde Normal UniversityNingde 352100China

A block-like metal-organic framework uio-66 was prepared by in-situ growth one-pot hydrothermal *** as-synthesized material was characterized by Fourier transform infrared spectroscopy,X-ray diffraction and scanning electron *** electrochemical properties used as a supercapacitor electrode material were evaluated by cyclic voltammetry(CV),galvanostatic charge-discharge measurement(GCD)and electrochemical impedance spectroscopy(EIS)in 2 M KOH solution,exhibiting a high specific capacitance(311 F·g^-1 at 1 A·g^-1),suggesting its promising potential as a supercapacitor electrode material.

关键词： in-situ growth uio-66 supercapacitor