Article
Engineering, Environmental
Xuefeng Zhang, Jiayu Ouyang, Xinmiao Qi, Ze Li, Qiang Ma, Xin Guo, Shanshan Jia
Summary: A photocatalytic adsorbent, CCCZ, was synthesized for effective removal of hexavalent chromium contamination. CCCZ exhibited exceptional adsorption capacity for Cr(VI), surpassing that of original chitosan gel bead by a factor of 3.4. Additionally, CCCZ showed efficient regeneration capacity and long-term stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Mai O. Abdelmigeed, Ahmed H. Sadek, Tamer S. Ahmed
Summary: A new Fe3O4/PVP/ZIF-8 nanostructure adsorbent was synthesized and used for the removal of Fosfomycin antibiotic from synthetic pharmaceutical wastewater. The adsorbent showed high adsorption capacity for Fosfomycin and followed the Freundlich isotherm and pseudo-second-order kinetic model.
Article
Multidisciplinary Sciences
Emad K. Radwan, Rehab A. Omar, Ahmed S. Moursy
Summary: A commercial carbon cloth oxidized by HNO3 acid was evaluated. The oxidization process duplicated the oxygen-containing functional groups and increased the surface area of the carbon cloth. The oxidized carbon cloth exhibited better adsorption performance towards benzotriazole (BTR), with quick adsorption occurring at pH 9 and improved adsorption when NaCl or CaCl2 was added to the BTR solution. The adsorption of BTR on the oxidized carbon cloth followed a physical process, forming multilayer adsorption on the heterogeneous surface. The oxidized carbon cloth could be regenerated using deionized water and reused for five cycles without loss of performance.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Environmental
Xinmiao Qi, Haoxuan Cai, Xuefeng Zhang, Jiayu Ouyang, Danqing Lu, Xin Guo, Shanshan Jia
Summary: In this study, a novel photocatalytic adsorbent, QNIW, was synthesized to remove Cr(VI) pollution in water resources. QNIW exhibited long-term stability, easy separability, and remarkable adsorption and photocatalytic performance. The study provides valuable insights into the development of high-efficiency, enduringly stable, and easily separable photocatalytic adsorbents.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yi-Tao Xu, Joyce Li, Mark J. MacLachlan
Summary: This study demonstrates the first preparation of stable hydrophobic graphene oxide (GO) photonic liquids, which can achieve tunable reflection wavelength in different hydrophobic liquid media with improved stability compared to aqueous GO suspensions. Hydrophobic additives effectively mediate the self-assembly of GO through an entropy-driven depletion mechanism, allowing the production of tunable photonic liquids without adjusting GO concentrations. Additionally, simultaneous reflection of infrared and visible light can be achieved, enabling infrared photonic GO liquids to display visible colors.
NANOSCALE HORIZONS
(2022)
Article
Engineering, Chemical
Rafal Sitko, Marcin Musielak, Maciej Serda, Ewa Talik, Beata Zawisza, Anna Gagor, Malgorzata Malecka
Summary: A superior nanoadsorbent (GO-TSC) for highly effective removal of mercury ions from water solutions was developed by grafting thiosemicarbazide molecules onto graphene oxide nanosheets. The adsorption on GO-TSC is significant across a broad pH range, with a maximum adsorption capacity of 231 mg g(-1) at pH 3.5 and impressive selectivity towards Hg(II) ions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Xin Zheng, Chunjun Ni, Wenwen Xiao, Yuanyuan Liang, Yongjin Li
Summary: Ionic liquid grafted Polyethersulfone nanofibrous membranes (PES-g-IL NFMs) prepared by combining radiation induced grafting method and electrospinning strategy showed excellent adsorption ability for dyes and heavy metal ions, as well as great antibacterial capability, making them promising candidates for wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Mahendra Kumar, Hanaa M. Baniowda, N. Sreedhar, Efrem Curcio, Hassan A. Arafat
Summary: The study introduced a novel fouling resistant, high flux, and high rejection hybrid ultrafiltration polysulfone membranes with charge tunable channels using functionalized polymer chains grafted graphene oxide (SPK-g-GO) nanosheets for natural organic matter removal. The membranes exhibited altered surface texture and hydrophilicity with SPK-g-GO incorporation, resulting in significantly improved water flux and fouling resistance. The hybrid membrane with 4% SPK-g-GO loading showed remarkable performance in natural organic matter removal and maintained stable retention rate during long-term filtration tests.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
R. M. Waliullah, Ariyan Islam Rehan, Mrs Eti Awual, Adiba Islam Rasee, Md. Chanmiya Sheikh, Md. Shad Salman, Mohammed Sohrab Hossain, Md. Munjur Hasan, Khadiza Tul Kubra, Md. Nazmul Hasan, Hadi M. Marwani, Aminul Islam, Mohammed M. Rahman, Md. Abdul Khaleque, Md. Rabiul Awual
Summary: In this study, chitosan-treated nanocomposite was used as an effective adsorbent to remove methyl orange dye from contaminated water. The introduction of chitosan improved the adsorption capacity and rate effectively, and the nanocomposite adsorbent exhibited high reusability. Therefore, chitosan-based fibrous nanocomposite adsorbent is expected to become one of the best candidate materials for future industrial wastewater treatment.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Paper & Wood
Daning Lang, Ming Shi, Xia Xu, Shixue He, Chao Yang, Lu Wang, Ronglan Wu, Wei Wang, Jide Wang
Summary: This study investigated the selective adsorption of 4-nitrophenol using molecularly imprinted polymers (MIPs), demonstrating excellent adsorption capacity and recyclability. The MIP showed fast adsorption of 4-nitrophenol and had a much higher selectivity coefficient for 4-nitrophenol compared to other phenolic compounds.
Article
Chemistry, Multidisciplinary
Mohammed Al-Yaari, Tawfik A. Saleh
Summary: Polyethyleneimine-grafted graphene oxide (PEI/GO) was synthesized by using graphene, polyethyleneimine, and trimesoyl chloride. The characterization results confirm the successful synthesis of PEI/GO and its strong interaction with lead (Pb2+) ions. The isotherm study reveals the adsorption process follows the Freundlich isotherm model, with a high maximum adsorption capacity. The prepared PEI/GO adsorbent shows promise for wastewater treatment due to its fast and high uptake removal capacity for Pb2+ ions and other heavy metals.
Article
Polymer Science
Chengyu Shi, Yulei Zhang, Xinyuan Lu, Zaozhen He, Aizhao Pan, Gang Chang, Ling He
Summary: In this study, a graphene-based copolymer was prepared to fabricate highly-durable protective coatings. The copolymer exhibited high transmittance, high hydrophobicity, and strong adhesion. The coatings could be applied to various substrates and maintained their performance even under extreme conditions.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Paper & Wood
Kazim Kose, Miran Mavlan, Lokman Uzun, Jeffry P. Youngblood
Summary: A novel cyclodextrin-modified nanocomposite adsorbent was successfully synthesized for the removal of cholesterol and low-density lipoprotein. Experimental results demonstrated excellent adsorption performance, with agreement between experimental data and mathematical models.
Article
Engineering, Chemical
Yiheng Miao, Weijun Peng, Wei Wang, Yijun Cao, Huiyong Li, Luping Chang, Yukun Huang, Guixia Fan, Hao Yi, Yuliang Zhao, Tingting Zhang
Summary: In this study, a three-dimensional porous hydrogel with high Pb(II) handling capacity and specific geometry was synthesized using montmorillonite nanosheets, gelatin, and sodium alginate as raw materials through 3D printing technology. The hydrogel demonstrated excellent adsorption performance for Pb(II) removal through a monolayer chemisorption process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Hongzhi Chen, Ke Tian, Taiping Qing, Xiaoqing Liu, Jiangling Mao, Jingxi Qin, Shunfeng Jiang
Summary: The development of efficient and environmentally friendly catalysts for activating persulfate is crucial for the advanced oxidation treatment of organic contaminants. In this study, alpha-MnO2 nanofiber coated with graphene oxide was prepared and used as a peroxmonsulfate activator for efficient degradation of TBBPA. The results showed that under optimal conditions, the catalyst achieved a removal ratio of TBBPA of up to 100%.
APPLIED SURFACE SCIENCE
(2023)
