CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2025
·
IF 3.7
Xiao Wei,Xuan Fang,Shuming Ma,Huaqiang He,Zhixin Wu,Silin Li,Shihao Zhang,Pei Nian,Wenlan Ji,Yibin Wei
Addressing the contamination of antibiotics has attracted ever-increasing and imperative attention due to their widespread existence, easy-to-cause drug-resistant bacteria infection, coupled with their intrinsic toxicity and hazard to environments and human health. Herein, a novel CC/CoNi-LDH-10%Ce anode material was directly constructed through a simple and rapid electrodeposition strategy, serving as an efficacious electrocatalyst for removing ciprofloxacin (CIP) from aqueous solution. Such novel CC/CoNi-LDH-10%Ce anode delivered a higher charge transfer, relatively abundant oxygen vacancies, and a higher electrochemical active area. The as-fabricated CC/CoNi-LDH-10%Ce electrode achieved a substantially boosted CIP removal efficiency of 52.5% relative to that of pure CC at about 23.9%. Notably, doping an appropriate amount of Ce 3+ can endow the pristine CC/CoNi-LDH with richer oxygen vacancies and excellent electrocatalytic performance. Additionally, the electrocatalytic oxidation of CIP was attributed to both direct oxidation on the electrode surface and indirect oxidation induced by the generated active species (superoxide radicals and hydroxyl radicals). This study provides a simple, universal and flexible tactic for other researchers in designing and manufacturing avenues of electrodes.
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高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jingjing Wang,Xiaoyuan Wang,Dacheng Zhong
In this study, zwitterionic polyelectrolyte brushes poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) were grafted on poly (vinyl alcohol)/graphene oxide (PVA/GO) nanofibrous membranes by surface-initiated activators generated by electron transfer for atom transfer radical polymerization (AGET ATRP). The obtained PVA/GO@PMPC nanofibrous membranes were used as adsorbents for removal of ciprofloxacin hydrochloride. The membrane prepared with the most amount of GO in the electrospinning solution and the highest MPC concentration during grafting polymerization displayed the largest adsorption amount of ciprofloxacin hydrochloride (245.6 mg/g). Within 15 h, the adsorption achieved equilibrium, and the removal process agreed well with pseudo-second-order kinetic model. At pH = 7.0, the maximum adsorption capacity was attained, and the adsorption capacity increased gradually with temperature. Study on adsorption mechanism revealed that π-π interactions, hydrogen bonding interactions and electrostatic interactions might be involved for removal of ciprofloxacin hydrochloride. After being repeatedly used for six times, binding affinity of the membrane did not change significantly. This study provided a general method for creating nanofibrous membranes with superior adsorption performance for removal of organic pollutants.
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ENVIRONMENTAL TECHNOLOGY
·
2012
·
IF 1.406
Xiaojie Zhang,Xiaoyan Gao,Pengwei Huo,Yongsheng Yan
Molecularly imprinted polymers (MIPs) for selective removal of ciprofloxacin (CIP) was prepared by a surface imprinting technique. The MIPs was characterized by Fourier transform infrared spectroscopy and scanning electron microscopy (SEM). The selectivity of the sorbent was investigated by a batch competitive binding experiment using aqueous CIP and gatifloxacin, CIP and chloramphenicol, and CIP and tetracycline mixtures, respectively. The static uptake capacity and selectivity coefficient of the MIPs are higher than those of the non-imprinted sorbent. The imprinted functionalized sorbent offered a fast kinetics for the extraction of CIP, which was obtained within 12 min. In a test of five extraction cycles, the adsorption capacity of the sorbent was above 92% of that of the fresh sorbent. Experimental results showed the potential of MIPs for selectivity removal of CIP.
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高影响因子
Coatings
·
2024
·Vol. 14
·期 2
·192
·
IF 2.9
Danye Zuo,Yuhong Yin,Liming Jiang,Zhi Xia,Chong Tan,Junsheng Li,Jinlong Zuo,Yuyang Wang
This study focuses on synthesizing a composite material of Ag/ZnO/BiOCl using Ag, ZnO, and BiOCl as raw materials. The material was prepared by loading Ag and BiOCl onto ZnO nanofilms, aiming to enhance the photocatalytic degradation of ciprofloxacin (CIP). Optimization of the photocatalytic degradation process through single-factor experiments revealed that under conditions of an initial CIP pH of 9, an Ag/ZnO/BiOCl dosage of 1 g/L, and an initial CIP concentration of 5 mg/L the conversion efficiency of CIP reached 98.79% after 150 min of exposure to a 250 W xenon lamp simulating sunlight. Furthermore, the composite material maintained a conversion efficiency of 86.17% for CIP even after five cycles of reuse, demonstrating its excellent stability. The optical properties, elemental composition, valence state, crystallinity, and morphology of the samples were analyzed using techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), UV–visible diffuse reflectance spectroscopy (UV-vis DRS), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The results indicate that the introduction of Ag expanded the light response range of ZnO, while the addition of BiOCl improved the separation efficiency of electron–hole pairs in the composite nanomaterial. The photocatalytic mechanism was further elucidated through radical scavenging experiments, confirming that ·OH and h+are the main active species in the degradation process.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shengtao Jiang,Xiaoli Liu,Deman Han,Jianqiang Zhu,Ru Jiang,Xiaohuan Liu,Haoyang Liu,Yanbiao Liu
Advanced oxidation processes are promising strategies for treating antibiotic-containing wastewater. However, poor anti-interference ability, inherent catalyst limitations, and “low-concentration barrier” (at concentrations of <20 mg L −1 ) restrict their applications. This study developed a CoFe layered double hydroxide (CoFe-LDH) membrane (CoFe-LDHm) for removing low-concentration ciprofloxacin hydrochloride (CIP·HCl·H 2 O). A CoFe-LDHm/peroxymonosulfate (PMS) system was developed, which exhibited exceptional catalytic performance with high stability for 100 h, achieving a maximum CIP·HCl·H 2 O removal efficiency (RE) of 96 % with an ultrashort retention time of 3.6 ms and a first-order rate constant of 1.61 ms −1 . The CoFe-LDHm/PMS system demonstrated strong anti-interference capability, maintaining a CIP·HCl·H 2 O RE of ≥88 % across a pH range of 4–8 and in complex water matrices. The CoFe-LDHm/PMS system also efficiently removed other recalcitrant micropollutants, including enrofloxacin, ranitidine, sulfamethoxazole, methyl orange, and bisphenol A, with RE values of ≥92 %. Mechanistic studies revealed that sulfate and hydroxyl radicals dominated CIP·HCl·H 2 O degradation, which was facilitated by the redox cycling of Co 2+ /Co 3+ and Fe 2+ /Fe 3+ . Density functional theory calculations further elucidated PMS adsorption and activation pathways on the CoFe-LDH surface. Toxicity assessments confirmed reduced ecological risks of associated intermediates. Life cycle assessment revealed that the CoFe-LDHm/PMS system represents an environmentally favorable wastewater treatment technology. This study advances the design of nanocatalytic membranes for the sustainable treatment of recalcitrant pharmaceutical contaminants.
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Xiangyu Wang,Yuwei Li,Hongjiao Chen,Luyao Zhang,Chengfeng Zhou,Jiaqi Cong,Cunzhen Geng,Bin Hui
Developing high-performance and sustainable carbon catalysts for enhancing the degradation of organic antibiotics remains a great challenge. Herein, a delignified wood-derived carbon embedded with nitrogen (DLWC@N) was designed to enhance peroxymonosulfate (PMS) activation for the degradation of aqueous ciprofloxacin (CIP). The removal of lignin and hemicellulose in poplar wood was found to facilitate the formation of a more porous architecture and tailed the permeability of channels in the carbon. N species and N content were regulated on this hydrophilic cellulose skeleton through a simple pyrolysis strategy. The resulting DLWC@N-700 achieved 97.49% CIP removal within 60 min and exhibited 79.64 % removal efficiency after four consecutive cycles. The unique three-dimensional network structure in the derived carbon promoted the diffusion of the solution and exposed much more active sites. Graphitic N and N-O bonds as main active sites during PMS activation were revealed. The quenching experiments combined with electron paramagnetic resonance and electrochemical analysis unveiled that the degradation process was dominated by a non-radical pathway of singlet oxygen and electron transfer. Liquid chromatography-mass spectrometer results demonstrated that the main degradation pathway of CIP included hydroxylation, cleavage of the piperazine ring, and cyclopropane shedding, resulting in the formation of seventeen reaction intermediates. This work proposes an advanced free-metal wood-derived carbon catalyst to enhance PMS activation for antibiotics degradation, facilitating the development of wastewater treatment technology.
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高影响因子
JOURNAL OF CONTROLLED RELEASE
·
2022
·
IF 11.467
Lu Han,Xu-Wei Liu,Tao Zang,Hao Ren,Dun-Sheng Liang,Shuan-Cheng Bai,Cang Li,Xiao-Ping Liao,Ya-Hong Liu,Chaoqun Zhang,Jian Sun
Targeted antibiotic delivery system would be an ideal solution for the treatment of enteropathogenic infections since it avoids the excessive usage of antibiotics clinically, which may lead to threat on public health and food safety. Salmonella spp . are Enteropathogens , but they are also robust H 2 S producers in the intestinal tracts of hosts. To this end, the PEGylated poly (α lipoic acid) (PEG-PALA) copolymer nanoparticles with hydrophilic exterior and hydrophobic interior were designated in this study to encapsulate the antibiotics and release them in response to H 2 S produced by Salmonella spp. The PEG-PALA nanoparticles demonstrated excellent stability in vitro and biocompatibility toward mammalian Caco-2 and 293 T cells . The release of ciprofloxacin from PEG-PALA nanoparticle was only 25.44 ± 0.57% and 26.98 ± 1.93% ( w /w) in simulated gastric fluid (SGF) and simulated intestinal fluid (SIF) solutions without H 2 S stimulation. However, the release amounts of ciprofloxacin were up to 73.68 ± 1.63% (w/w) in the presence of 1 mM Na 2 S as H 2 S source. In the mouse infection model, PEG-PALA nanoparticles encapsulated with ciprofloxacin ( [email protected] ) reduced the Salmonella colonization in the heart, liver, spleen, lung, cecum, and faeces, prolonged ciprofloxacin persistence in the intestine while reducing its absorption into the blood. More importantly, these nanoparticles reduced 3.4-fold of Enterobacteriaceae levels and increased 1.5-fold of the Lactobacillaceae levels compared with the drug administered in the free form. Moreover, these nanoparticles resulted in only minimal signs of intestinal tract inflammation. The H 2 S-responsive antibiotic delivery systems reported in this study demonstrating a variety of advantages including protected the drug from deactivation by gastric and intestinal fluids, maintained a high concentration in the intestinal tract and maximally kept the gut microbiota homeostasis. As such, this targeted antibiotic delivery systems are for the encapsulation of antibiotics to target specific enteropathogens.
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高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2022
·
IF 7.129
Li-Juan Feng,Kai-Xin Zhang,Zong-Lin Shi,Fan-Ping Zhu,Xian-Zheng Yuan,Wan-Song Zong,Chao Song
Microplastics (MPs) in natural environments undergo complex aging processes, changing their interactions with coexisting antibiotics, and posing unpredictable ecological risks. However, the joint toxicity of aged MPs (aMPs) and antibiotics to bacteria, especially at the molecular level, is unclear. In this study, non-thermal plasma technology was used to simultaneously simulate various radical oxidation and physical reactions that occur naturally in the environment, breaking the limitation of simple aging process in laboratory aging technologies. After aging, we investigated the altered properties of aMPs, their interactions with ciprofloxacin (CIP), and the molecular responses of E. coli exposed to pristine MPs (13.5 mg/L), aMPs (13.5 mg/L), and CIP (2 μg/L) individually or simultaneously. aMPs bound far more CIP to their surfaces than pristine MPs, especially in freshwater ecosystems. Notably, the growth of E. coli exposed to aMPs alone was inhibited, whereas pristine MPs exposure didn’t affect the growth of E. coli . Moreover, the most differentially expressed genes in E. coli were induced by the coexposure of aMPs and CIP. Although E. coli depended on chemotaxis to improve its flagellar rotation and escaped the stress of pollutants, the coexposure of aMPs and CIP still caused cell membrane damage, oxidative stress, obstruction of DNA replication, and osmotic imbalance in E. coli . This study filled the knowledge gap between the toxicity of aMPs and pristine MPs coexisting with antibiotics at the transcription level, helping in the accurate assessment of the potential risks of MPs to the environment.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Zhiman Yang,Xiaoshuang Shi,Meng Dai,Lin Wang,Xiaohui Xu,Rongbo Guo
Potential of effluents from biological hydrogen production process to improve ciprofloxacin (CIP) removal was investigated using ciprofloxacin-degrading enrichments in the presence of Fe 3 O 4 nanoparticles . Effluent addition clearly promoted CIP removal, which was 61%, 38% and 16% higher than those in the enrichments amended with fecal sewage , biogas digestate and water, respectively. Experiments of sterilization and organic components of effluents indicated that the organic substances served as co-metabolic substrate to facilitate CIP removal, where ethanol was the preferred co-metabolic substrate. Although the effluent addition changed the bacterial community composition which corresponded to the changes in the relative abundances of dominant genera in the enrichments, CIP removal performance remained unchanged. The increased Fe (II) concentrations indicated that there might be a positive relationship of CIP removal with the microbial reduction of Fe (III) to Fe (II) in Fe 3 O 4 in the effluents-amended enrichments. It was proposed that the organic substances in the effluents might serve as the co-metabolic substrate to promote CIP removal by CIP-degrading and Fe (III)-reducing bacteria.
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高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 29
·e73906
·
IF 2.3
Yanhong Mo,Yueli Wang,Qinghong Zhou,Xiaoyong Jin,Yonglei Xing,Beibei Kou,Juan Peng,Gang Ni
A novel Z-scheme heterojunction photoanode, CoWO 4 /BiVO 4 , was synthesized by in situ growth of cobalt tungstate on 3D coral-like bismuth vanadate via a hydrothermal method. This photoanode was applied to degrade ciprofloxacin (CIP) in a photoelectrochemical (PEC) system coupled with peroxymonosulfate (PMS) activation. Material characterization confirmed the successful formation of the heterojunction, which broadened visible-light absorption and enhanced the separation of photogenerated charges through a built-in electric field. Under optimized conditions, the CoWO 4 /BiVO 4 photoanode degraded 82.6% of 20 ppm CIP within 30 min, exhibiting a kinetic rate constant approximately 7.1 times higher than that of pure BiVO 4 , along with good stability and broad degradation capability. Mechanistic studies revealed that holes (h + ) and superoxide radicals ( • O 2 − ) were the dominant active species, while sulfate (SO 4 •− ) and hydroxyl ( • OH) radicals contributed synergistically. This study provides a feasible strategy for designing efficient heterojunction-based PEC systems for wastewater treatment. Graphical The proposed Z‑scheme charge transfer mechanism and CIP degradation pathway over the CoWO 4 /BiVO 4 heterojunction under visible-light irradiation.
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Solids
·
2026
·Vol. 7
·期 3
·26
·
IF 2.1
Chuanjin Wang,Junshu Wu,Jinshu Wang
The persistent accumulation of antibiotic pollutants in aquatic environments poses potential threats to ecological safety and human health, highlighting the importance of developing low-cost, high-performance adsorbents for their efficient removal. In this study, a hydrothermal method was employed to prepare highly dispersed coal gangue-based calcium silicate hydrate (CSH) adsorbents. The structural characteristics, adsorption performance, and adsorption mechanisms of the material were systematically investigated. The as-prepared CSH exhibited an interwoven nanorod/nanosheet composite morphology with a more developed pore structure and a higher specific surface area. Kinetic analysis indicated that the adsorption process followed a pseudo-second-order model and involved both Boyd diffusion and intraparticle diffusion, with liquid-film diffusion likely serving as the primary rate-limiting step. Isotherm analysis revealed that the adsorption behavior was well described by the Langmuir model, suggesting monolayer adsorption, with a theoretical adsorption capacity (Qm) of 129.29 mg/g. Thermodynamic analysis further demonstrated that the adsorption of CIP onto CSH was a spontaneous and endothermic process. Combined characterization results and theoretical calculations suggested that the adsorption of CIP by CSH was mainly governed by surface oxygen containing active sites, accompanied by electrostatic interactions, hydrogen bonding, and possible surface coordination effects. In addition, CSH maintained excellent adsorption performance and structural stability in the presence of coexisting ions, in tap water systems, and after repeated adsorption–desorption cycles. This study not only enables the high-value utilization of coal gangue but also provides new insights into the development of low-cost adsorbent materials for antibiotic removal.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 21
·1648
·
IF 3.2
Shi Min,Sun Yangang,Li Hao,Zhang Yu,Wen Zhaoxia,Pan Luyao
The remediation of antibiotic-contaminated water relies critically on the rational design and development of high-efficiency photocatalysts capable of operating under visible light. This study aimed to develop calcium-doped BiOCl nanocomposites for visible-light photocatalysis. Samples with adjustable Ca 2+ concentrations were prepared via hydrothermal synthesis followed by calcination, and their effectiveness in decomposing CIP was systematically investigated. The experimental results show a 1.51 times enhancement in CIP degradation efficiency for the Ca-doped sample (BOCl/Ca-10) compared to pristine BOCl. Characterization results reveal that Ca 2+ doping induces beneficial adjustments in the electronic configuration and microstructure of BOCl, thereby optimizing its functional properties. The identification of •O 2 − as the primary reactive species was achieved through radical trapping experiments. Furthermore, calcium doping is established as an effective strategy for modifying BiOCl. As demonstrated by the high-performance BOCl/Ca-10 composite, this approach facilitates the design of efficient photocatalysts for the remediation of antibiotic pollutants in water.
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