Article
Polymer Science
Sabry A. El-Naggar, Ahmed A. El-Barbary, Wesam M. Salama, Hazem M. Elkholy
Summary: Polyvinyl alcohol (PVA), chitosan (CS), and cellulose (CL) are promising polymers for chemical functionalization and biomedical applications. This study aimed to synthesize folic acid (FA) conjugates with PVA, CS, and CL to enhance their biomedical applications. The conjugates showed good antifungal and antitumor activities, making them potential carrier systems for drug delivery.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Hyun Gyu Shin, Tapas R. Pradhan, Jin Kyoon Park, Jeung Gon Kim
Summary: The postpolymerization modification of acrylic acid copolymers is demonstrated in this study. A library of functional acrylate polymers was produced by direct addition of polymeric carboxylic acid to allene sulfonamides. Sterically congested methacrylic acid copolymers and acrylic acid copolymers were found to participate in the postpolymerization modification process with good conversions.
Article
Chemistry, Multidisciplinary
Helal Abujubara, Jie Yang, A. Birsen Otyakmaz, Anais F. M. Noisier, Werngard Czechtizky, Malin Lemurell, Alesia A. A. Tietze
Summary: We report a mild ionic liquid (IL)-mediated thiolation technique using 1,3-ethyl-methyl imidazolium acetate as a solvent and precursor to generate activated IL for the conjugation reaction of small molecules and peptides. Interestingly, a bifunctional active IL could also be successfully employed as a linker for peptides lacking cysteine. This study lays the foundation for further investigation of the use of active ILs in modifying larger and more complex therapeutic modalities.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Polymer Science
Yu-Hang Zhang, Shan Zhang, Jin Liu, Ju-Fang Hao, Bao-Jiang He, Zheng-Wu Bai
Summary: By developing a practical pathway, 6-amino-6-deoxy amylose was successfully prepared. Through a series of NMR and X-ray diffraction analyses, the structure and properties of the product were determined.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Physical
Daniele Polidoro, Alina M. Balu, Maurizio Selva, Rafael Luque, Sameh M. Osman, Tripti Chhabra
Summary: Microwave (MW) and conventional heating (CH) methods were compared for the synthesis of fuel additives from levulinic acid. Phosphomolybdic acid (PMA) and phosphotungstic acid (PTA)-containing graphitic carbon nitride (GCN) were synthesized and optimized to achieve high yields. MW significantly reduced reaction times and is a more sustainable approach for the synthesis of various fuel additives. Scale-up experiments showed that MW with optimum GCN-PMA achieved higher productivity compared to CH conditions.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Physical
Cheng Zong, Ruizhuan Wang, Hao Qin, Lifang Chen, Zhiwen Qi
Summary: This study proposes an intensified synthesis of glycerol monocaprylin using an ionic liquid as a dual solvent and catalyst. By selecting an ionic liquid with good solubility and temperature-responsive behavior, the selectivity, separation, and recycling of the product can be improved. The optimized reaction conditions achieve high conversion and yield. Furthermore, the ionic liquid maintains its catalytic performance after multiple cycles.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Polymer Science
Kevin Nixon, Rui Sun, Yossef A. Elabd
Summary: In this study, 3-, 4-, and 6-arm star poly(vinylbenzyl methylimidazolium chloride) were synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization with a core-first approach, resulting in uniform number and length of polymer arms. The effect of initial radical initiator concentration and number of functional groups per multifunctional RAFT agent on polymerization reaction kinetics was investigated. Increasing the initial radical initiator concentration led to faster monomer conversion, while decreasing the number of functional groups per multifunctional RAFT agent resulted in a decrease in the initial rate retardation in reaction kinetics. This work demonstrates a facile method for synthesizing ion-containing star polymers with uniform number and length of polymer arms, showing potential as a new material for electrochemical energy devices due to property enhancements associated with their star polymer architecture.
Article
Engineering, Environmental
Akbar Ali, Showkat Ali Ganie, Tariq A. Mir, Nasreen Mazumdar
Summary: An effective water-soluble polysaccharide-based disinfectant was produced by chemically modifying gum arabic. The modification involved tosylation, azidation, and reduction reactions to introduce amino groups into gum arabic. The resulting amino-functionalized gum was then quaternized with iodomethane to produce polycationic derivatives. These derivatives showed significant antibacterial activity and good disinfection efficiency.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Energy & Fuels
Shucui Han, Jinbei Yang, Hui Huang
Summary: Two double-site acidic ionic liquids were synthesized and one of them showed excellent catalytic performance and recyclability in esterification reactions. Under optimized conditions, this ionic liquid achieved a conversion rate of 98.65% for oleic acid and maintained high catalytic activity for 9 cycles.
Article
Biochemistry & Molecular Biology
Hongfei Ni, Yiwei Zhang, Chuhong Zong, Zhengbo Hou, Hang Song, Yong Chen, Xuesong Liu, Tengfei Xu, Yingjie Luo
Summary: In this study, new tropine-based functionalized acidic ionic liquids (FAILs) were synthesized and demonstrated excellent catalytic performance in the synthesis of aspirin. The ionic liquid [Trps][OTs] exhibited high yield and selectivity, proving its potential as an ideal green solvent for esterification reactions and a suitable substitute for traditional catalysts.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Chemistry, Medicinal
Jianan Lin, Guangling Jiao, Azadeh Kermanshahi-pour
Summary: Algal polysaccharides are naturally abundant and possess biocompatible and biodegradable properties, making them promising building blocks for hydrogel fabrication in various applications such as drug delivery and tissue engineering.
Article
Chemistry, Physical
Chiara Dalla Valle, Francesco Sandri, Marco Zecca, Federico Rastrelli, Sandro Campestrini, Paolo Centomo
Summary: A new synthetic method for functionalizing styrenic cross-linked polymers with perfluorinated acyl chains has been reported, and the successful grafting of fluorinated moieties has been confirmed by {H-1}-C-13 and {F-19}-C-13 NMR characterizations. This type of polymer shows promise as a catalytic support for various reactions that require a highly lipophilic catalyst. Increasing the lipophilicity of the materials results in improved catalytic properties in the esterification reaction of stearic acid with methanol in a vegetable oil solution.
Article
Engineering, Chemical
Meng Shi, Kelei Huang, Ruining He, Yinghua Jiang, Yun Zou, Jing Xu, Zhangfa Tong
Summary: The study found that the Bronsted acidic ionic liquid [HSO3-PMPY][CF3SO3] exhibited good catalytic activity and reusability in the production of isobutyl acetate. The NIH-M kinetic model established in this study showed satisfactory prediction of the esterification reaction kinetics and was validated under various conditions.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Yuhang Bian, Junyang Liu, Guoliang Zhang, Zhijian Peng, Chunshan Li
Summary: In this study, a solid acid catalyst was prepared by using functionalized copolymer for the esterification reaction of methacrylic acid and methanol. The catalyst exhibited high catalytic activity and good stability under the optimized conditions.
Article
Multidisciplinary Sciences
Le Yao, Chengjiang Lin, Xiaozheng Duan, Xiaoqing Ming, Zhixuan Chen, He Zhu, Shiping Zhu, Qi Zhang
Summary: This article reports a new type of underwater adhesive based on a polymeric matrix and hydrophobic ionic liquid, which has autonomous underwater adhesion capability. Research shows that the adhesion energy of this adhesive on PET substrate will increase more than 5 times after 24 hours.
NATURE COMMUNICATIONS
(2023)
Article
Thermodynamics
Wenlei Xie, Fei Wan
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Engineering, Environmental
Junmin Ji, Wenlei Xie
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Green & Sustainable Science & Technology
Wenlei Xie, Hao Wang
Article
Chemistry, Multidisciplinary
Wenlei Xie, Hao Wang
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2020)
Article
Green & Sustainable Science & Technology
Wenlei Xie, Mengyun Huang
Article
Chemistry, Physical
Wenlei Xie, Chunli Gao, Hongyan Wang
Article
Energy & Fuels
Wenlei Xie, Hao Wang
Summary: The study aims to prepare an efficient and magnetically separable Bronsted acid catalyst for converting low-quality oils to biodiesel. By coating silica shells on magnetic Fe3O4 nanoparticles and grafting copolymerization of dual acidic ionic liquids, a solid catalyst with strong catalytic activity was obtained. This catalyst shows good catalytic activities towards transesterification of soybean oil and esterification of free fatty acids, making it a robust solid acid catalyst for one-pot biodiesel production from low-quality acidic oils.
Article
Chemistry, Applied
Junmin Ji, Wenlei Xie
Summary: The efficient magnetic adsorbent Fe3O4@ATP, prepared by dispersing Fe3O4 nanoparticles on attapulgite, showed a high removal efficiency of 86.82% for AFB(1) from contaminated oils. With paramagnetic properties and good adsorption kinetics, it exhibited potential for practical applications in AFB(1) elimination from oils.
Article
Green & Sustainable Science & Technology
Wenlei Xie, Chunli Gao, Jiangbo Li
Summary: Efficient and reusable catalysts are desired for improved biodiesel production, and a solid catalyst was successfully developed by incorporating ZIF-8 MOF into Fe3O4 nanoparticles and encapsulating a vanadium-substituted heteropolyacid. The catalyst showed good magnetic responsiveness and achieved simultaneous transesterification of soybean oil and esterification of free fatty acids, with high conversion rates and good reusability.
Article
Green & Sustainable Science & Technology
Wenlei Xie, Yunfei Xiong, Hongyan Wang
Summary: This study developed an efficient and reusable solid base catalyst for biodiesel production, showing excellent catalytic activity and magnetic responsiveness. The catalyst has potential for sustainable and clean biodiesel production, with successful transesterification of soybean oil to biodiesel.
Article
Energy & Fuels
Lihong Guo, Wenlei Xie, Chunli Gao
Summary: The heterogenization of Keggin-structure heteropoly acids (HPAs) on activated carbon modified with metal ions (Cs+, K+ and Ag+) resulted in efficient solid catalysts for biodiesel production. The 35%H6PV3MoW8O40/AC-Ag hybrid catalyst showed high catalytic performance in transesterification of soybean oil, with good recyclability and resistance to impurities. This novel solid catalyst offers an efficient and sustainable approach for biodiesel production, particularly from low-quality oils.
Article
Green & Sustainable Science & Technology
Quan Wang, Wenlei Xie, Lihong Guo
Summary: The development of feasible and ecofriendly processes for biodiesel production is of great importance for green chemistry and sustainable development. In this study, a one-pot heterogeneous catalytic system using MoO3/ZrO2/KIT-6 catalyst was developed for the synthesis of high-performance biodiesel. The optimized catalyst showed excellent tolerance and reusability.
Article
Green & Sustainable Science & Technology
Gaoqiang Zhang, Wenlei Xie
Summary: Ameliorating reactant mass transfer and fabricating multiple active sites are effective strategies for synthesizing efficient biodiesel catalysts using acidic oils as feedstocks. In this study, hierarchical porous solid acids with Zr and Mo oxides as active sites were prepared and showed improved catalytic performances due to mass transfer enhancement and more accessible active sites. The solid catalyst displayed high water and FFA resistance and could be easily recycled, making it suitable for cost-effective biodiesel production from low-grade acidic oils.
JOURNAL OF CLEANER PRODUCTION
(2023)
Review
Green & Sustainable Science & Technology
Wenlei Xie, Jiangbo Li
Summary: Biodiesel has gained attention as a potential alternative energy source. The use of heterogeneous catalysts for biodiesel production offers a more eco-friendly and attractive process. Magnetic solid catalysts have become a recent research focus due to their easy separation and minimal mass loss. This review discusses various magnetic solid catalysts, their preparation, catalytic performances, and future development trends, with a focus on their active species, surface properties, and synergisms. The review also presents possible reaction mechanisms and influential parameters for improved catalytic performances.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Green & Sustainable Science & Technology
Qiaofei Zhang, Wenlei Xie, Jiangbo Li, Lihong Guo
Summary: Bimetallic silica mesoporous composites with different Zr/Al molar ratios were synthesized via a one-step hydrothermal method and sulfated with sulfuric acid to obtain a series of sulfated Zrx-Aly-KIT-6 catalysts. The catalysts exhibited a large amount of acidic sites derived from Zr and Al incorporation and further sulfation, and the acidic strength was greatly influenced by the inductive effect of SO42- species. The interconnected mesoporous structure and enhanced mass transfer facilitated efficient transesterification reactions.
