Article
Engineering, Chemical
Wentao Li, Jianwei Guo, Haojie Du, Dong Wang, Jianwei Cao, Zhi Wang
Summary: In this study, an aluminum ion imprinted polymer (Al (III)-IIP) was fabricated using the surface-imprinting method. The adsorption performance and selectivity properties of Al (III)-IIP for Al3+ in rare earth solutions were investigated. The results showed that the polymer had a high adsorption capacity and selectivity, indicating its great potential for the selective separation of aluminum ions from rare earth solutions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
Zijian Zhao, Hui Jiang, Lang Wu, Ning Yu, Zhengwei Luo, Wenhua Geng
Summary: A novel cobalt ion-imprinted polymer material with high selectivity and adsorption capacity for cobalt ions was successfully prepared in this study. The experimental results demonstrated that the material exhibited good saturation speed and adsorption-desorption cycle stability during the adsorption process.
Article
Environmental Sciences
Mariam Khan, Mohammad A. Al-Ghouti, Majeda Khraisheh, Basem Shomar, Yousef Hijji, Yongfeng Tong, Said Mansour, Mustafa Saleh Nasser
Summary: This study aimed to prepare an ion-imprinted polymer (IIP) called IIP-Cu, using copper sulfate as a template and potassium persulfate as an initiator, and tested its effectiveness in selectively adsorbing copper ions (Cu2+) and strontium ions (Sr2+) from aqueous solutions. Various characterizations confirmed the successful removal of the template, revealing a rough and porous topology of the IIP-Cu. The adsorption of Cu2+ onto IIP-Cu was best explained using Langmuir models, with a maximum adsorption capacity of 159 mg/g. Furthermore, the efficiency of the prepared IIP-Cu was tested in real brine water, showing promising results in removing Cu2+ and competing ions.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Yi Su, Marco Wenzel, Markus Seifert, Jan J. Weigand
Summary: In this study, a highly selective ion-imprinted brewer's spent grain (IIP-BSG) adsorbent was prepared using a high monomer/template molar ratio for efficient removal of uranyl ions from wastewater. The IIP-BSG exhibited high adsorption capacity, selectivity, and reusability, and showed potential for selective separation and concentration of U(VI) from nuclear wastewater and mine water.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Analytical
Lanbo Bi, Jimin Shen, Zhuoran Yao, Jing Kang, Shengxin Zhao, Pengwei Yan, Binyuan Wang, Zhonglin Chen
Summary: In this study, magnetic molecularly imprinted polymers (MMIPs) were successfully fabricated on Fe3O4 surface using surface molecular imprinting technology for selective adsorption of 17 beta-estradiol (E2). The optimized experimental conditions resulted in MMIPs with high adsorption capacity and good reusability. The prepared MMIPs can be applied for selective recognition and removal of E2.
Review
Biochemistry & Molecular Biology
Maria Marinela Lazar, Claudiu-Augustin Ghiorghita, Ecaterina Stela Dragan, Doina Humelnicu, Maria Valentina Dinu
Summary: The introduction of ion-imprinted polymers (IIPs) based on the molecular imprinting methodology has provided an innovative solution for the selective recognition of heavy metal ions (HMIs). Recent advances have demonstrated that IIPs exhibit higher selectivity coefficients, enabling various environmental applications such as extraction, monitoring, detection, and quantification of HMIs. This review critically analyzes relevant literature studies from the past decade, focusing on the selective removal of transition metal ions using IIPs. It discusses the chemical components, ion-imprinting technologies, characterization methods, synthesis parameters, adsorption performance, and solid phase extraction of heavy metal ions by different IIPs.
Article
Chemistry, Applied
Nadia H. Elsayed, Raedah A. S. Alatawi, M. Monier
Summary: The ion-imprinting strategy was used to develop a UO2(II) imprinted sorbent that can selectively remove UO2(II) ions from water. The sorbent showed high selectivity in multi-ionic solutions and maintained a high efficiency even after multiple regeneration and reuse cycles.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Chemical
Thabiso C. Maponya, Kwena D. Modibane, Thabang R. Somo, Katlego Makgopa
Summary: Novel ion-imprinted MIL-101(Cr) has been synthesized for selective recognition and removal of Pd2+ from aqueous solution. The adsorption behavior of Pd2+ on IPMIL-101(Cr) and NIMIL-101(Cr) was investigated, showing high removal efficiency and selectivity for Pd2+. The IPMIL-101(Cr) exhibited a maximum adsorption capacity of 193.2 mg.g-1 and followed a Langmuir isotherm. The adsorption process was endothermic and spontaneous according to the positive Delta H and negative Delta G values.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Mengdie Zhou, Pan Wang, Yulin Song, Hao Li, Jianquan Luo, Jianming Pan
Summary: In this study, Janus single hole hollow nanoparticles (J-HNPs) encapsulating molecularly imprinted polymers (MIPs) were successfully designed and applied for the effective and selective separation of 2'-deoxyadenosine (dA) in complex biological samples. The hybrid sorbent showed fast adsorption equilibrium for dA within 40 minutes and maintained 88% of the initial capacity after four consecutive adsorption-desorption cycles, demonstrating excellent recognition ability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Lihui Gao, Lizhang Wang, Yijun Cao, Shulei Li
Summary: A gallium ion-imprinted material was successfully prepared from waste persimmon peel and exhibited excellent selective adsorption performance for the recovery of gallium ions from aqueous solutions.
MINERALS ENGINEERING
(2022)
Article
Chemistry, Applied
Nadia H. Elsayed, M. Monier, Raedah A. S. Alatawi, Menier Al-Anazi
Summary: Cellulose was used as raw material for the production of sorbent microspheres for selective separation of uranyl ions. An amidoxime cellulosic derivative (AOCE) was synthesized by Michael addition followed by amidoximation reaction, and microspheres of ion-imprinted U-AOCE sorbent were made by crosslinking the UO22+ polymer complex with glyoxal and eluting the coordinated ions with H+/EDTA. The adsorption capacity of U-AOCE was significantly higher with enhanced adsorption selectivity for UO22+. The primary adsorption process involved coordination between UO22+ and the-NH2 and-OH groups of the amidoxime units.
CARBOHYDRATE POLYMERS
(2023)
Article
Biochemistry & Molecular Biology
Nadia H. Elsayed, M. Monier, Raedah A. S. Alatawi, Menier Al-Anazi, Mody Albalawi, Maher J. Alatawi
Summary: Amino-phenolic chitosan derivative was used to imprint uranyl ions, resulting in a high-efficiency sorbent material (U-APCS) with improved selectivity and adsorption capacity for UO22+. The adsorption mechanism was determined to be chemisorption or coordination, and the adsorption followed a pseudo-second-order kinetic model and a Langmuir isotherm model. Thermodynamic analysis indicated that the adsorption of UO22+ was endothermic and spontaneous.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Applied
Nadia H. Elsayed, M. Monier, Raedah A. S. Alatawi, Marzough A. Albalawi, Aliyah S. Alhawiti
Summary: The main aim of this work is to prepare azo dye modified chitosan and use it for the ion imprinting of Cr(III) ions in order to selectively combine with the ions in water. Through a series of chemical reactions, spatial and geometrical shape of the resulting Cr(III) ions chelating sites are successfully preserved.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Environmental
Dagang Qi, Hewei Zhang, Zhiyong Zhou, Zhongqi Ren
Summary: In this study, adsorption enrichment combined with detection was used to rapidly detect cadmium ions in water. Cd(II)-IIPs with good adsorption properties and selectivity were prepared by optimizing the preparation conditions. The detection performance of Cd(II)-IIPs was investigated using digital image colorimetric and ultraviolet spectrophotometric methods, allowing for quantitative detection within a certain concentration range.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Applied
Minxin Shi, Tianren Lu, Xiancai Li, Yifeng Yang
Summary: In this study, lanthanum ion-imprinted polymer La-IIP-MAA/Fe3O4-GO was prepared using ion-imprinting technology. The material showed good adsorption effects and selectivity for lanthanum ions, and maintained good performance after repeated use five times.
JOURNAL OF RARE EARTHS
(2022)
Article
Engineering, Chemical
Dimitrios Meimaroglou, Daniela Florez, Guo-Hua Hu
Summary: A novel modeling framework is presented for the peroxide-initiated radical polymerization of styrene in the presence of ground-tire rubber particles. The model takes into account the effects of rubber particles and their additives on the reaction, successfully predicting the behavior under different conditions.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Wei-Chen Gao, Wei Wu, Chang-Zhou Chen, Hui Zhao, Yang Liu, Qing Li, Chong-Xing Huang, Guo-hua Hu, Shuang-Fei Wang, Dean Shi, Qun-Chao Zhang
Summary: The newly designed PU/rGO/PDA/PFDT strain sensor possesses advantages such as superhydrophobicity, wide working strain range, and high gauge factor, and can effectively detect human movement signals even in high humidity environments.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Cheng Chang, Lian-Fang Feng, Xue-Ping Gu, Cai-Liang Zhang, Xi Chen, Guo-Hua Hu
Summary: Molecular weight distribution is an important factor in optimizing and controlling industrial polymerization processes. This study presents a segment probability method to calculate the MWD of polycondensates, and the results show good agreement with experimental measurements.
Article
Polymer Science
Tian-Tian Li, Si-Bo Cheng, Lian-Fang Feng, Xue-Ping Gu, Cai-Liang Zhang, Guo-Hua Hu
Summary: This study explores and optimizes a new atomic force microscopy (AFM) system to quantitatively measure the interfacial thickness of immiscible polymer blends, and proposes optimal sample surface preparation procedures.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Chemistry, Physical
Hui Zhao, Wei-Chen Gao, Qing Li, Muhammad Rafiullah Khan, Guo-Hua Hu, Yang Liu, Wei Wu, Chong-Xing Huang, Robert K. Y. Li
Summary: This review presents the recent preparation methods for superhydrophobic polyurethane (SHPU) and discusses its potential applications in various fields.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Chemical
Wei-Yun Ji, Tian-Tian Li, Si-Bo Cheng, Lian-Fang Feng, Xue-Ping Gu, Cai-Liang Zhang, Guo-Hua Hu
Summary: This study reveals that in reactive polymer blending, flow/mixing can both promote copolymer formation by creating interfaces and enhance collisions between reactive groups, as well as potentially pull the copolymer out of the interfaces and migrate it to one of the two polymer components of the blend, reducing its compatibilization efficiency.
Article
Chemistry, Applied
Yiheng Song, Tao Wu, Jiangkai Bao, Menghan Xu, Quanling Yang, Liping Zhu, Zhuqun Shi, Guo-Hua Hu, Chuanxi Xiong
Summary: Flexible porous piezoelectric aerogel films based on TOCN and Mo-S2 nanosheets were developed, exhibiting good piezoelectric properties. The aerogel film with 6 wt% MoS2 showed the best output performance, generating high open circuit voltage and short-circuit current.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Chemical
Heng-Kuan Zhang, Ya-Ran Yin, Xu-Qi Pan, Xian-Ming Zhang, Wen-Xing Chen, Guo-Hua Hu
Summary: This study investigates the evolution of normal force on a smooth plate immersed in Newtonian and yield stress fluids during dip coating, considering factors like withdrawal velocity, liquid rheological property, and plate roughness. The control forces for coating in each of the four stages of force variation are determined, providing insight into the film-formation mechanism and surface tension measurement in dip coating.
POLYMER ENGINEERING AND SCIENCE
(2022)
Article
Engineering, Chemical
Huang-He Feng, Xi Chen, Xue-Ping Gu, Lian-Fang Feng, Deng-Fei Wang, Guo-Xing Yang, Yu-Xin Gao, Cai-Liang Zhang, Guo-Hua Hu
Summary: Molecular weight distribution (MWD) and short chain branching distribution (SCBD) have a significant impact on the performance of linear low-density polyethylene (LLDPE). A model based on a non-standard polymerization reaction scheme is developed for the copolymerization of ethylene and alpha-olefin in a gas phase reactor. Experimental MWD and SCBD are simultaneously deconvoluted, leading to physically more relevant results. Parameter reduction and parameter estimability analysis are conducted to obtain a subset of reliable parameter estimation. The model based on the estimated parameters accurately predicts the MWD and SCBD of LLDPE grades obtained from a pilot-scale gas phase polymerization process.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Rui Xue, Hui Zhao, Ze-Wei An, Wei Wu, Yan Jiang, Peng Li, Chong-Xing Huang, Dean Shi, Robert K. Y. Li, Guo-Hua Hu, Shuang-Fei Wang
Summary: A flexible photonic film with selfhealing ability (FPFS) was prepared by combining waterborne polyurethane containing dynamic covalent disulfide bonds (SSWPU) with cellulose nanocrystals (CNC). The FPFS exhibited excellent toughness under various mechanical actions and could self-heal within 2 hours at room temperature. It also showed reversible color change when soaked in solvents and could form visible patterns under polarized light when painted with ethanol ink. This study provides new perspectives in the areas of self-healing, biological anticounterfeiting, solvent response, and flexible photonic materials.
Article
Polymer Science
Lan Guo, Yunsheng Xu, Xianming Zhang, Guo-Hua Hu
Summary: Nanoparticles are used to compatibilize immiscible polymer blends. Silica nanoparticles (SiO2) were used in this study to compatibilize polyamide 6 (PA6)/polycarbonate (PC) blends. The localization of SiO2 at the interfaces between PA6 and PC was achieved through grafting a methacrylic monomer onto SiO2 and copolymerizing it with styrene (St) and 3-isopropenyl-alpha,alpha'-dimethylbenzyl isocyanate (TMI). The presence of SiO2-PST significantly decreased the PC domain diameter and improved the mechanical properties of the PA6/PC blend.
Article
Engineering, Chemical
Huiwen Yu, Zhongwen Zhao, Baiping Xu, Guo-Hua Hu, Cecile Lemaitre, Yanhong Feng
Summary: This study investigates the residence time distribution (RTD) and flow patterns in an asymmetrical twin-screw extruder (ATSE) through visualizing the process using a transparent barrel. The results show that the mean residence time (t) in the ATSE is larger than that in a classical TSE, indicating the occurrence of backflow in the intermeshing regions between the low flight and the inner wall of the barrel.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Hong-Wei Li, Jia-Le Zhang, Rui Xue, Ze-Wei An, Wei Wu, Yang Liu, Guo-Hua Hu, Hui Zhao
Summary: This research proposes a novel solvent etching deposition method to combine waterborne polyurethane with MOF to prepare a self-healable and recyclable adsorption membrane. The results show that the WPU-SS-MOF membrane has excellent mechanical and self-healing properties, and it also exhibits outstanding adsorption and recycling capacity for anionic dyes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Shuai Tang, Jiao Li, Runguo Wang, Jichuan Zhang, Yonglai Lu, Guo-Hua Hu, Zhao Wang, Liqun Zhang
Summary: Elastomers, including natural rubber and bio-based synthetic elastomers, play a crucial role in society. While natural rubber has unique properties, its limited variety of molecular structures may not meet increasing demands. On the other hand, bio-based synthetic elastomers offer a wider range of molecular structures and have less impact on environmental pollution, promoting the sustainable development of the elastomer industry.
Article
Polymer Science
Dongdong Ren, Shiwei Wang, Xiaoxu Dong, Tiantian Wang, Tong Song, Yanxin Wang, Guo-Hua Hu, Qian Li
Summary: The study demonstrates that hydrogels prepared using acrylamide, acrylic acid, and hexamethylene diisocyanate trimer exhibit ultra-high strain, good self-recovery, and strong adhesion properties. These hydrogels show strong adhesion to various materials and the adhesion ability increases over time as water gradually evaporates. They are expected to have a promising future in the fields of flexible wearable materials and adhesives.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2022)
