Article
Engineering, Environmental
Paula Mayorga-Burrezo, Carmen C. Mayorga-Martinez, Jeonghyo Kim, Martin Pumera
Summary: Growing awareness of the harmful effects of sunlight overexposure has led to the regular use of sunscreens. However, the increasing concentration of related pollutants has caused major environmental side-effects. To address this global threat, magnetically-driven photoactive microrobots have been developed for water remediation, offering an efficient solution. These microrobots exhibit magnetic steering motion and easy retrieval, thanks to their modified surface. By combining adsorption and photocatalytic activity, they can effectively degrade organic UV filters in suntan lotions. The magnetically-driven navigation contributes to the enhanced degradation of these harmful substances.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
Feifei Sun, Mingru Yao, Hang Su, Qingli Yang, Wei Wu
Summary: Foodborne diseases caused by foodborne pathogens are common and influential worldwide, posing a great threat to food safety and human health. This research developed an aptamer fluorescent micromotor for accurate detection and in situ sterilization of pathogens in liquid food. The micromotor showed a detection limit of 4 CFU/mL, a bactericidal rate of 100%, and a detection recovery rate of 92.89-106.96% in milk samples. Furthermore, it exhibited better protein retention rate compared to traditional pasteurization, demonstrating its potential for practical application in food.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Environmental Sciences
Nafisur Rahman, Poornima Varshney
Summary: This study synthesized CuO nanoparticles decorated poly(2-acrylamido-2-methyl-1-propanesulfonic acid)/chitosan composite material for the uptake of doxycycline from water. The composite material showed a high removal efficiency of 98.84% under optimal conditions. Experimental data fitting revealed that the Langmuir isotherm and pseudo-second-order kinetic models best described the adsorption process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Lei Xu, Yani Liu, Jingang Wang, Ying Tang, Zhe Zhang
Summary: Both adsorption experiments and theoretical calculations showed that Pb2+ is more readily adsorbed by M-ATP due to its stability, making it challenging for Cu2+ to replace Pb2+ from M-ATP.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Applied
Ahmed I. A. Soliman, Jonathan A. Diaz Baca, Pedram Fatehi
Summary: A one-pot hydrothermal procedure was used to develop magnetic cellulose nanocrystal (MCNC) from microcrystalline cellulose (MCC) in the presence of ferric chloride, ferrous chloride, urea, and hydrochloric acid. The composite of MCNC with magnetite (Fe3O4) showed potential as an adsorbent for water treatment and environmental remediation. Post-treatment with chloroacetic acid (CAA), chlorosulfonic acid (CSA), or iodobenzene (IB) improved the adsorption capacity of MCNC for doxycycline hyclate (DOX) by introducing carboxylate, sulfonate, and phenyl groups.
CARBOHYDRATE POLYMERS
(2023)
Article
Environmental Sciences
Xiangyue Xu, Wenjin Ma, Boyu An, Kaixiang Zhou, Kun Mi, Meixia Huo, Haiyan Liu, Hanyu Wang, Zhenli Liu, Guyue Cheng, Lingli Huang
Summary: Veterinary antibiotics, such as doxycycline (DOX), are widely used in animal agriculture, but their environmental risks have been studied. Results showed that DOX rapidly adsorbed to agricultural soils, with factors like soil organic matter, clay ratio, and cation exchange capacity significantly influencing the adsorption. Soil properties and environmental conditions greatly affected the fate and transport of DOX into agricultural soils.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Chemistry, Multidisciplinary
Trung Tuyen Bui, Duc Cuong Nguyen, Si Hiep Hua, Hyungphil Chun, Yong Shin Kim
Summary: This study presents a novel method for synthesizing magnetic core-shell nanocomposites for environmental applications. The method involves encapsulating magnetic Fe3O4 nanoparticles with microporous zeolitic imidazolate framework-8 (ZIF-8) nanocrystals through ultrasonic activation. The synthesized Fe3O4@ZIF-8 nanoparticles exhibit a core-shell structure and have high content of ZIF-8, combined with micro/mesoporosity. The functional nanomaterial can be used as adsorbents that are easily separated using a magnet, and show excellent adsorption performance for the removal of copper ions from water.
Article
Chemistry, Multidisciplinary
Yuanhang Lei, Haibo Yang, Jiangqin Xie, Qi Chen, Wenxuan Quan, Anping Wang
Summary: With the acceleration of industrialization and urbanization, global water resources have been polluted, specifically by heavy metals which cause significant harm to the environment and organisms. In this study, MOF materials with unique properties, such as high chemical stability and specific surface area, were used to adsorb Cu2+. MOF-67 with the largest surface area and best crystal form, demonstrating a stronger magnetic response, was selected and successfully employed in rapidly adsorbing low-concentration Cu2+ in water for water purification. The magnetic adsorbent showed a high adsorption rate of 93.4% when the initial concentration of Cu2+ was 50 mg/L for 30 minutes, and it can be reused three times.
FRONTIERS IN CHEMISTRY
(2023)
Article
Environmental Sciences
Ting He, Jianguo Bao, Yifei Leng, Shuqiong Kong, Jiangkun Du, Xu Li
Summary: This study investigated the synergistic benefits of adsorption and biotransformation in removing DC from water using rice straw particles covered with DC degrading bacteria. The results demonstrated that DC can be quickly adsorbed onto the particles and subsequently biotransformed by the bacteria.
Article
Materials Science, Multidisciplinary
Fengying Qin, Juanyan Wu, Dongmei Fu, Ye Feng, Chao Gao, Dazhi Xie, Shaoming Fu, Suyi Liu, Daniela A. Wilson, Fei Peng
Summary: The study proposes a DNA detection system based on a magnetic helical hydrogel micromotor, which can detect tumor DNA in a non-invasive, quick, and simple manner, exhibiting excellent moving performance and high efficiency response.
APPLIED MATERIALS TODAY
(2022)
Article
Engineering, Environmental
Lu-Qing Xie, Sui Peng, Ya-Nan Xin, Bo Liu, Xin-Yu Jiang, Jin-Gang Yu
Summary: A novel 3D graphene oxide/2-mercaptothiazoline aerogel was successfully prepared and it showed high adsorption capacity for Cu2+ in aqueous solution. The aerogel also exhibited high selectivity for Cu2+ in a bicomponent system of Cu2+/Pb2+. The presence of nitrogen and sulfur heteroatoms in the aerogel promoted the assembly with Cu2+ through pi-pi stacking and hydrogen bonding interactions. The adsorption process followed linear pseudo-second-order kinetics and linear Langmuir isotherm model, and it was found to be non spontaneous and endothermic.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Xi Chen, Zhi Huang, Si-Yuan Luo, Min-Hua Zong, Wen-Yong Lou
Summary: The study successfully prepared magnetic hydrogels with high strength, high porosity, and macroporous structure, exhibiting excellent adsorption effect on both Cu2+ and Congo red. The adsorption processes for different substances followed different kinetics models, and the prepared hydrogels showed excellent reusability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
John Edward L. Sio, Erwin C. Escobar, Hern Kim, Wook-Jin Chung, Grace M. Nisola
Summary: A magnetic adsorbent HPCA@SiO2@Fe3O4 with high HPCA loading and good stability was developed for Co (II) recovery from liquid waste.
Article
Environmental Sciences
Lei Fang, Yunxia Miao, Dong Wei, Yan Zhang, Yongchao Zhou
Summary: The novel magnetic molecularly imprinted polymer has selective adsorption ability for fluoroquinolones, and can simultaneously degrade and regenerate pollutants, showing good reusability.
Review
Chemistry, Physical
Chukwunonso O. Aniagor, Chinenye Adaobi Igwegbe, Joshua O. Ighalo, Stephen N. Oba
Summary: This review examined the adsorption of doxycycline (DC) from aqueous media, revealing a maximum adsorption capacity of 835.45 mg/g and identifying electrostatic interaction and p-p interactions as the major mechanisms. The study concluded that DC can be efficiently mitigated from industrial effluents through adsorption techniques.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
