Article
Chemistry, Multidisciplinary
Michael R. R. Smith, Clare B. B. Martin, Sonia Arumuganainar, Ari Gilman, Bruce E. E. Koel, Michele L. L. Sarazen
Summary: Immobilization of porphyrin complexes into metal-organic frameworks enables high exposure of active sites for CO2 electroreduction. Well-dispersed iron-porphyrin-based MOF (PCN-222(Fe)) on carbon-based electrodes showed optimal turnover frequencies for CO2 reduction to CO. In situ Raman spectroscopy revealed the structure stability of PCN-222(Fe) and a stepwise electron transfer-proton transfer mechanism for CO2 electroreduction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Weiqing Xu, Yu Wu, Yuling Xu, Xiaoli Cai, Wenling Gu, Chengzhou Zhu
Summary: This study presents a spatially compartmentalized artificial organelle for correcting intratumoral metabolite analysis. The organelle consists of a zeolitic imidazolate framework-8 immobilized glucose oxidase-horseradish peroxidase cascade core and catalase-directed shell, which function as signal transduction and guarding rooms, respectively. The core and shell provide appropriate spaces to enhance biocatalytic efficiency and tolerate complex tumor microenvironments. Moreover, catalase decomposes endogenous H2O2 to O-2, overcoming interference in signal output and alleviating hypoxic states, thus maximizing glucose oxidation. The artificial organelle demonstrates great potential for accurate intratumoral metabolite analysis in vitro and in vivo.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Jinhai Yu, Weilu Zong, Yingying Ding, Junzhong Liu, Lina Chen, Hongjuan Zhang, Qingcai Jiao
Summary: The study focused on investigating ten omega-transaminases for synthesizing eighteen aromatic amines with high conversion rates and yields. Furthermore, the immobilized Bm-STA/UiO-66-NH2 composites showed excellent enzyme loading, storage stability, and other beneficial properties for industrial applications.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Analytical
Ying Ma, Ping Wei, Mengjie Chen, Xianhua Shi, Xiange Lu, Xuanxuan Zhang, Duanping Sun
Summary: A simple solution phase method is reported for the synthesis of 2D trimetallic MOF nanosheets with three kinds of metal ions as ligands. The synthesized NiCoFe nanosheets show enhanced electrochemical activity due to the synergistic effect. These nanosheets are used as modified materials for the electrochemical detection of H2O2, showing excellent selectivity and stability.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Yuan Ji, Zhengzhang Wu, Peng Zhang, Meng Qiao, Yi Hu, Baoxing Shen, Bingzhi Li, Xing Zhang
Summary: The study successfully encapsulated lipase and magnetic nanoparticles into ZIF-8 composite material using a mild and quick one-pot strategy, achieving high immobilization yield. The resulting magnetic MOF composite demonstrated excellent resistance to harsh environments, simplifying complex downstream operations, and maintaining high activity even after multiple reuse cycles.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Inorganic & Nuclear
Yanmei Feng, Ying Xu, Shucheng Liu, Di Wu, Zhuoqun Su, Guang Chen, Jianghua Liu, Guoliang Li
Summary: This paper discusses the challenges of enzyme immobilization in nano-space and explores the potential of metal-organic frameworks, covalent organic frameworks, and hydrogen-bonded organic frameworks as promising carriers for enzyme immobilization. Additionally, the paper provides a comprehensive summary of the applications of enzyme-MOF/COF/HOF biocomposites in various sensing strategies and tentatively discusses the challenges and opportunities in this field.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Engineering, Environmental
Yuhao Weng, Zhibin Song, Chia-Hung Chen, Hongliang Tan
Summary: The study developed a unique organic/inorganic hybrid hydrogel system by interfacial mineralization of metal-organic frameworks (MOFs) on hydrogel microspheres, which preserves the enzyme conformation and enhances catalytic efficiency. This hybrid hydrogel system exhibits high enzyme tolerance and multi-compartment structure for incompatible enzyme reactions, providing a new approach for biomimetic cascade reactions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Ventura Castillo Ramos, Wei Han, Xiangping Zhang, Suojiang Zhang, King Lun Yeung
Summary: Toluene is a common indoor pollutant and its removal is crucial for maintaining a healthy environment. Metal Organic Frameworks (MOFs) and Ionic Liquids (ILs) show great potential for adsorbing toluene. This study reports the synthesis and application of IL/MOF composite materials for toluene removal. The addition of [BMIM][CH3COO] ionic liquid to MIL101 porous structure significantly improves the affinity of the parent materials towards toluene capture. Improved diffusion and kinetics rates were observed in the IL/MOF composite, making the sorption process more efficient.
ENVIRONMENTAL RESEARCH
(2023)
Review
Chemistry, Physical
Pengyan Yang, Wenhui Yang, Haiyang Zhang, Rui Zhao
Summary: Oxidoreductases play a vital role in bioenergetic metabolic pathways and have important applications in various fields. However, their instability and the high cost of cofactors hinder their industrial applications. Enzyme immobilization using metal-organic frameworks (MOFs) is a promising strategy to overcome these limitations.
Article
Engineering, Chemical
Abdelfattah Amari, Fatimah Mohammed Alzahrani, Norah Salem Alsaiari, Khadijah Mohammedsaleh Katubi, Faouzi Ben Rebah, Mohamed A. Tahoon
Summary: The laccase enzyme was successfully immobilized on a magnetic amino-functionalized metal-organic framework Fe3O4-NH2@MIL-101(Cr), showing excellent resistance to high temperatures and low pH levels. The immobilized laccase system displayed high stability and effective biodegradation of Reactive Black 5 and Alizarin Red S dyes in water.
Article
Chemistry, Analytical
Junji Li, Wen-Li Xin, Yu-Xuan Dai, Guofang Shu, Xue-Ji Zhang, Robert S. Marks, Serge Cosnier, Dan Shan
Summary: Metal-organic frameworks (MOFs) are versatile coordinators for synthesizing high-performance catalysts, such as the redox-alternating CuxO electrochemical catalyst. The study synthesized a novel precursor MOF and characterized the transformation towards a highly active nanocomposite through temperature modulation to enhance sensitivity in H2O2 reduction. The resulting sensor material exhibited amplified sensitivity and ease of preparation, suggesting wide applications in medical settings.
ANALYTICAL CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Hao Zhao, Guanhua Liu, Yunting Liu, Xilin Liu, Hanxi Wang, Huaxun Chen, Jing Gao, Yanjun Jiang
Summary: Cascade catalysis that combines chemical catalysis and biocatalysis, especially the integration of metal nanoparticles (MNPs) with enzymes, has attracted extensive attention. This study proposed a strategy to space-separately immobilize MNPs and enzymes to a highly stable covalent organic framework (COF). The obtained integrated nanocatalyst showed high catalytic efficiency and reusability in the degradation of organophosphate nerve agents. The versatility of the preparation strategy of COF-based integrated nanocatalyst has also been expanded.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Agricultural Engineering
Deqing Wang, Pu Zheng, Pengcheng Chen, Dan Wu
Summary: The study successfully immobilized Rha enzyme on magnetic MOFs for rutin hydrolysis, achieving higher activity, lower K-m value, and improved reusability. This indicates that magnetic MOF-immobilized enzymes are feasible biocatalysts for converting low water-soluble flavonoids.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Melvin S. Samuel, V. S. Kirankumar, E. Selvarajan
Summary: Aflatoxins are toxic substances commonly found in contaminated commodities and pose a health risk to humans and animals. This study developed a novel NH2-Zn(BDC)(DMF)MOF composite with high adsorption capacity for AFB1, showing potential for use as an effective adsorbent for Aflatoxin removal.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Neda Motamedi, Mahmood Barani, Azadeh Lohrasbi-Nejad, Mojtaba Mortazavi, Ali Riahi-Medvar, Rajender S. Varma, Masoud Torkzadeh-Mahani
Summary: By immobilizing the enzyme on NimMOF, the enzyme activity and stability were improved, with the immobilized Uox@NimMOF showing significant activity even at high temperatures; the immobilized enzyme exhibited good activity over a broad range of pH and temperatures.
Article
Chemistry, Multidisciplinary
Hongwei Guan, Aixia Zhang, Peng Li, Lixin Xia, Feng Guo
Article
Environmental Sciences
Zihan Zhu, Feng Guo, Anming Li, Weichao Xu, Xuehan Zhang
Summary: A BiOI/ZnO/rGO composite photocatalyst was fabricated and applied to degrade the antibiotic chloramphenicol (CAP). The composite material exhibited excellent photocatalytic properties, with a degradation rate significantly higher than that of BiOI and ZnO alone. The synergistic effect between rGO and BiOI/ZnO was found to enhance photocurrents, conductivity, and charge carrier densities. Moreover, the composite material showed good stability and reusability.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Hong Liu, Feng Guo, Qiang Lv, An-ming Li, Wei-chao Xu, Xue-han Zhang
Summary: This study reports the synthesis of a novel methyltrimethoxysilane-coated loofah-chitin aerogel (MLCA) for the removal of benzene and toluene from an aqueous phase. The MLCA exhibited good adsorption capacities due to its large specific surface area and abundant pores and adsorption sites. The adsorption isotherm data were accurately fitted using the Langmuir model, and the adsorption kinetic model was consistent with the pseudo-first order model. The thermodynamic parameters provided insights into the adsorption equilibrium and mechanism. The MLCA, made from low-cost loofah sponge, shows promise as an efficient adsorbent for removing organic pollutants from seawater.
Article
Energy & Fuels
Qiang Lv, Hong Liu, Weichao Xu, Anming Li, Xuehan Zhang, Yuhang Yi, Kunhao Guo, Feng Guo
Summary: The development of efficient catalytic systems is crucial for producing high-value chemicals from low-cost glucose. In this study, MOF-5 was evaluated as a promising support for a heterogeneous catalyst with both Brensted acid and Lewis acid sites. The catalyst demonstrated high activity for the production of levulinic acid from glucose in green deep eutectic solvent media. Adjusting the ratio of Bronsted acid sites to Lewis acid sites improved the efficiency of the entire reaction chain.
Article
Chemistry, Multidisciplinary
Anming Li, Xinhang Cong, Haotong Qin, Weichao Xu, Xuehan Zhang, Wenzhuang Wang, Feng Guo
Summary: S-doped g-C3N4 was synthesized using a high-pressure microwave-assisted sol-gel method. After 180 min of UV irradiation or 360 min of visible light irradiation, the toluene removal by S-doped g-C3N4 with a S/g-C3N4 mass ratio of 1 : 1 was nearly 100%. S-doping decreases layer spacing and induces the formation of g-C3N4 lattice defects, enhancing the effective separation of photo-generated electron-hole pairs. The optimized S-doping ratio strikes a favorable compromise between improving the photo-generated electron-hole separation efficiency and lowering the surface electron conductivity. DFT calculations and analysis of the energy band structure and electronic properties of S-doped g-C3N4 provide insights into the mechanism of S-doping to enhance the photocatalytic activity of g-C3N4. S-doped g-C3N4 exhibits efficient catalytic activity and excellent photo-corrosion resistance, demonstrating potential practical applications for VOC removal.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zihan Zhu, Xuehan Zhang, Wenzhuang Wang, Xinhang Cong, Haotong Qin, Feng Guo
Summary: By using a rational design, a heterojunction interface can overcome the limitations of a single photocatalyst structure and enable the separation and transport of photogenerated carriers. In this study, p-n heterojunctions of BiOI/ZnO nano-flakes were successfully synthesized via a simple hydrothermal process, and they showed significantly improved photocatalytic efficiency for metronidazole degradation under visible light compared to pristine ZnO and BiOI. The excellent stability and reusability of BiOI/ZnO further highlights the importance of heterostructure construction in overcoming the shortcomings of traditional semiconductor materials.
Article
Chemistry, Multidisciplinary
Zihan Zhu, Feng Guo, Zhonghao Xu, Xiaoxuan Di, Qian Zhang
Article
Chemistry, Multidisciplinary
Xiaoxuan Di, Feng Guo, Zihan Zhu, Zhonghao Xu, Ziqi Qian, Qian Zhang
