Article
Engineering, Environmental
May N. Bin Jumah, Mohamed Hamdy Eid, Arwa Abdulkreem AL-Huqail, Maha Abdullah Mohammad, Nouf Saleh Bin-Murdhi, Gasem M. Abu-Taweel, Naif Altoom, Ahmed A. Allam, Mostafa R. AbuKhadra
Summary: The hybrid structure of mesoporous silica and beta-cyclodextrin polymer showed promising uptake affinities for As (V) and Hg (II) ions, with maximum capacities reached at 265.6 mg/g and 207.9 mg/g, respectively. The adsorption process followed Pseudo-First order kinetic behavior and Langmuir equilibrium properties, with physical nature emphasized by Gaussian energy values. Thermodynamic studies demonstrated spontaneous, favorable, and exothermic reactions during adsorption. In column systems, the composite achieved total removal percentages of 72.8% (As (V)) and 60.4% (Hg (II)), making it a promising material for decontamination purposes.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Jinmao Ma, Dongrun Wang, Wei Zhang, Xiangyu Wang, Xia Ma, Minsheng Liu, Quanlin Zhao, Lincheng Zhou, Sanxiang Sun, Zhengfang Ye
Summary: This study reports a method using PPDI to fabricate CD-modified PCMS resin. PCMS@PPDI-CD exhibits excellent renewability and availability, and its morphology and structural properties were investigated by SEM mapping, FTIR, TG, BET, and XPS analyses. Experimental results show that PCMS@PPDI-CD has outstanding adsorption performance with high adsorption capacity and recyclability. The possible mechanism was also revealed.
PROCESS BIOCHEMISTRY
(2022)
Article
Engineering, Environmental
Zhike Wang, Ting-Ting Li, Hao-Kai Peng, Hai-Tao Ren, Ching-Wen Lou, Jia-Horng Lin
Summary: This study improved the preparation method of hydrogels, enhancing their strength and adsorption capacity, making them have great potential for wastewater treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Jian Wang, Zheng Jiang, Ran Ma
Summary: Wastewater contaminated by radionuclides is a significant environmental concern that poses a threat to human health. In this study, beta-cyclodextrin modified molybdenum disulfide was investigated as an adsorbent to remove europium from aqueous solutions. The experimental results indicated that the adsorption of Europium(III) relied on pH and temperature. The Langmuir model better described the removal process, which was found to be a monolayer adsorption. The adsorption capacity of beta-CD-MoS2 for Europium(III) reached 107.1 mg/g and the adsorption process was endothermic. The surface hydroxyl groups controlled the retention of Europium(III). These findings provide important information for environmental pollution control and the elimination of Europium(III).
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Engineering, Environmental
Jie Liu, Jun Zhou, Zhihuan Wu, Xue Tian, Xiangyu An, Ying Zhang, Guangshan Zhang, Fengxia Deng, Xianlin Meng, Jianhua Qu
Summary: In this study, a beta-cyclodextrin modified magnetic rice husk-derived cellulose adsorbent was synthesized and demonstrated to effectively bind heavy metals and endocrine disrupting compounds in polluted water. The adsorbent exhibited superior adsorption performance and could be easily recovered due to its magnetic properties.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Stefan Bucur, Aurel Diacon, Ionel Mangalagiu, Alexandra Mocanu, Florica Rizea, Adrian Dinescu, Adi Ghebaur, Aurelian Cristian Boscornea, Georgeta Voicu, Edina Rusen
Summary: This study successfully synthesized silica particles bearing two beta-cyclodextrin (BCD) groups and confirmed the successful synthesis through FT-IR and TGA. The possible formation mechanism of silica particles bearing BCD derivatives on their surface was highlighted using contact angle measurements, BET analysis, and SEM characterization. The modified silica showed the ability to remove bisphenol A (BPA) from wastewater due to the presence of BCD moieties on the surface. Kinetic analysis demonstrated that the adsorption reached equilibrium after 180 minutes, with qe values of 107 mg BPA/g for SiO2-BCD-OH and 112 mg BPA/g for SiO2-BCD-NH2. The process followed Ho's pseudo-second-order adsorption model, indicating the existence of adsorption sites with different activities. The fitting of the Freundlich isotherm model confirmed the influence of BCD on the materials' adsorption properties.
Article
Polymer Science
Xiangbin Sun, Peng Cao, Xue Bai, Yufeng He, Pengfei Song, Rongmin Wang
Summary: In this study, a series of double-armed antibacterial polymers (CD-QPS) were successfully synthesized via Steglich esterification and reversible addition-fragmentation chain transfer polymerization (RAFT). These polymers exhibited exceptional antibacterial activity against Escherichia coli and Staphylococcus aureus, with bacteriostatic rates reaching 100% and 99.9%, respectively. CD-QPS also demonstrated long-term antibacterial effects in preservation tests and showed good biocompatibility in cytotoxicity tests.
Article
Materials Science, Multidisciplinary
Q. A. Alsulami, M. A. Hussein, S. Z. Alsheheri, E. A. Elshehy, W. A. El-Said
Summary: This study focuses on the industrial application of silica/thiourea-formaldehyde composite monoliths for recovering silver and mercury ions from contaminated samples. The fabricated composite shows unique surface properties and high adsorption capacities for the target ions. The findings demonstrate the potential of the designed composite for efficient and reproducible adsorption of silver and mercury ions in environmental and waste disposal samples.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Bastien Michel, Anne Imberty, Ellinor B. Heggset, Kristin Syverud, Julien Bras, Alain Dufresne
Summary: TEMPO-oxidized cellulose nanofibrils (toCNF), in the form of entangled networks like membranes or cryogels, have attracted attention for applications such as drug release and purification. Utilizing beta-cyclodextrins (beta-CDs) for inclusion complex formation with hydrophobic molecules can enhance the functionalities of these materials. This study focuses on the adsorption of beta-CDs onto toCNF cryogels, analyzing interactions through various methods and quantifying the binding capacity, which is crucial for optimizing the design of toCNF/beta-CDs materials.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2021)
Article
Chemistry, Physical
Lidia Bandura, Monika Bialoszewska, Szymon Malinowski, Wojciech Franus
Summary: In this study, synthetic zeolite modified with beta-cyclodextrin showed enhanced adsorption capacity for IBU, BPA, and CFN from aqueous solutions. The adsorption mechanism involved electron sharing/exchange, hydrogen bond formation, and pi-pi interactions, with maximum adsorption capacities ranging from 11.8 to 32.7 mg/g. The modified zeolite proved to be an efficient adsorbent for the removal of organic micropollutants from water.
APPLIED SURFACE SCIENCE
(2021)
Article
Construction & Building Technology
YaChao Wang, Xiaofei Kou, Hongxing Shi, JiangPing Zhao, Jun Deng, Xin A
Summary: A novel beta-cyclodextrin (beta-CD)/silica fume-based coating was prepared using the sol-gel method to enhance the flame retardancy of plywood. The microstructure and pyrolysis kinetics were studied to understand the flame-retarding mechanism. The results showed that the coating exhibited improved flame retardancy, which can be attributed to the hydrogen-bonding crosslinking and blocking of heat or mass transfer. This study provides an efficient approach for designing fireproof coatings using biomaterials and metallurgical waste.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Menghao Jiang, Rena Simayi, Amatjan Sawut, Junxiao Wang, Tingxiang Wu, Xuankun Gong
Summary: In this study, a novel composite hydrogel was developed as an efficient adsorbent for selective adsorption of cationic dyes. The hydrogel exhibited excellent removal efficiency towards methylene blue (MB) and showed selective adsorption in different dye mixture solutions. The desorption performance of the hydrogel was also investigated and achieved high efficiency under eco-friendly conditions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Environmental Sciences
Jianhua Qu, Qingjuan Meng, Xiufeng Lin, Wei Han, Qun Jiang, Lei Wang, Qi Hu, Lin Zhang, Ying Zhang
Summary: In this study, beta-cyclodextrin was efficiently grafted onto rice husk-based celluloses using microwave irradiation, leading to fast adsorption equilibrium and superior reusability for Pb(II) removal. The synthesized adsorbents exhibited excellent adsorption capacities and could effectively purify acid battery effluent containing Pb(II), showing great potential for tailored adsorbents development in wastewater treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Yuancai Lv, Jiachen Ma, Kaiyang Liu, Yanting Jiang, Guifang Yang, Yifan Liu, Chunxiang Lin, Xiaoxia Ye, Yongqian Shi, Minghua Liu, Lihui Chen
Summary: A porous beta-cyclodextrin modified cellulose nano-fiber membrane was successfully fabricated and employed to treat trace bisphenol pollutants in water, showing excellent adsorption performance and dynamic treatment capability. Under experimental conditions, CA-P-CDP effectively removed bisphenol pollutants from water, demonstrating its potential for practical application.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Lin Feng, Qingge Feng, Qihua Liang, Yuan Qi, Fanghong Qin, Kao Chen, Xiaoxiao Huang, Junyi Liu, Zhuoyan Huang
Summary: Amine-modified silica aerogel was synthesized as an efficient and environmentally friendly adsorbent for removing nanoparticles. Doping with 3-aminopropyltriethoxysilanes enhanced the adsorption capacity, making it 19 times more efficient than unmodified aerogel. The study provides a reliable adsorption approach for nanoparticle removal and investigates the intricate adsorption mechanism.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
