REACTIVE & FUNCTIONAL POLYMERS
·
2025
·
IF 5.1
Yipeng Zhang,Yani Wang,Kewei Wang,Xiaopeng Xiong
The persistent presence of antibiotic contaminants, such as fluoroquinolones (FQs), in aquatic environments poses significant environmental risks. In this study, a porous poly(glycidyl methacrylate) (PPGMA) microsphere adsorbent was designed for the efficient removal of FQs. Acrylate monomers were dispersed in water to prepare an oil-in-water high internal phase emulsion, which was subsequently subjected to ultraviolet (UV) irradiation for 3 min to prepare the microsphere with high yield. To template the porous structure, cyclohexane, a poor solvent for the polymer, was introduced into the initial monomer oil phase, and its influence on the evolution of porous morphology was systematically investigated. Thereafter, the porous microsphere was modified through grafting with polyethyleneimine to facilitate the in-situ growth of a metal-organic framework, UiO-66-NH 2 . The modification progress was monitored, and the final UiO@PPGMA microspheres were comprehensively characterized. Based on adsorption kinetics and thermodynamics, the microsphere containing only 2.78 % UiO-66-NH 2 exhibits significantly enhanced adsorption rate and capacity, which can be attributed to the in-situ grown UiO-66-NH 2 nanoparticles. Furthermore, the UiO@PPGMA microsphere can be easily regenerated, allowing it to be packed in a column for cyclic fixed-bed adsorption. Consequently, our results demonstrate a facile strategy for preparing porous microsphere adsorbents, which may have promising applications in the removal of antibiotic contaminants from water sources.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xiaoyun Qin,Qinyuan Lou,Yiying Ling,Zhihao Zheng,Xiaomei Qin,Fenghua Chen,Jianbo Zhao,Yanghai Gui,Huishi Guo,Chao Zhao,Zhen Zhang
In the process of industrial wastewater discharge, water pollution remains a pressing challenge, with heavy metal pollution being the most critical issue. Electrochemical sensors offer advantages such as rapid response time, ease of integration with microprocessors for on-site testing. This paper proposes the use of self-assembled polystyrene (PS) microspheres as electrode modification materials, leveraging their ordered assembly structure to reduce signal differences between electrodes from different batches, thereby preparing an electrochemical sensor with good repeatability for the determination of heavy metal ions (HMIs) Cu(II), Zn(II), and Pb(II). The experiment employed square wave anodic stripping voltammetry (SWASV) to collect the stripping currents. The designed sensor exhibited sensitivities of 0.905 μA/μM, 0.408 μA/μM, and 0.264 μA/μM, as well as limits of detection (LODs) of 0.13 μM, 0.25 μM, and 0.29 μM (S/N = 3) for Cu(II), Zn(II), and Pb(II), respectively. To enhance detection accuracy, peak current, full stripping current, and feature current were respectively input combined with machine learning (ML) algorithms to construct prediction models to evaluate the performance of the sensor. The results demonstrated that the constructed RF-Feature model significantly improved detection accuracy. It demonstrated excellent reliability, with R 2 values of 0.9952, 0.9973, and 0.9976, and root mean square error (RMSE) values of 0.6580 μM, 0.5838 μM, and 0.8164 μM, for Cu(II), Zn(II), and Pb(II), respectively. The detection range was 1 μM to 70 μM. Furthermore, the effectiveness of the sensor in practical applications was validated by detection in real wastewater samples from industrial and hospital emissions. These results were validated using an inductively coupled plasma mass spectrometry (ICP-MS) method.
研究领域:
环境监测
·
电分析化学
·
传感器与生物传感器
·
机器学习应用
·
水污染控制
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2023
·Vol. 21
·期 1
·1-19
·
IF 10.2
Qiu Lei,Shen Renbin,Wei Lei,Xu Shujuan,Xia Wei,Hou Yan,Cui Jinxin,Qu Rong,Luo Jiale,Cao Jian,Yang Jie,Sun Jing,Ma Ronglin,Yu Qiang
Patients with inflammatory bowel disease (IBD) always suffer from severe abdominal pain and appear to be at high risk for colorectal cancer. Recently, the co-delivery of targeted drugs and gut microbiota has developed into an attractive strategy. A new strategy using gut microbiota fermentation to overcome the interspace diffuse resistance from the mucus layer to control drug release in inflammatory bowel sites (IBS sites) has not yet been available. Here, we designed an alginate hydrogel microsphere encapsulating bifidobacterium (Bac) and drug-modified nanoscale dietary fibers (NDFs). The hydrogel microsphere is responsible for protecting drugs from acidic and multi-enzymatic environments and delivering drugs to the colorectum. Subsequently, the fermentation of Bac by digesting NDFs and proteins as carbon and nitrogen sources can promote drug release and play a probiotic role in the gut microbiota. In vitro evidence indicated that small-sized NDF (NDF-1) could significantly promote short-chain fatty acid (SCFA) expression. Notably, NDF-1 hydrogel microspheres showed a boost release of 5-ASA in the IBS sites, resulting in the amelioration of gut inflammation and remodeling of gut microbiota in chronic colitis mice. This study developed a controlled release system based on microbial fermentation for the treatment of IBD.
研究领域:
药学
·
生物技术
·
胃肠病学
·
微生物学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Hongyang Liu,Tiancheng Gao,Jian Zhang,Xin Cheng,Zheng Xing,Lina Li,Haina Bai
Constructed MOF-in-LDHs to regulate morphology and anchor active sites. • Ternary metal redox cycles coupled with ETP boosted PMS activation. • Ion resistance and cycling stability enable continuous-flow application. Although the development of catalysts with high activity and stability is still a major problem, advanced oxidation processes based on peroxymonosulfate (PMS-AOPs) show promise for the degradation of antibiotics. In this work, FeCu-LDH with an initial fish-scale embroidered spherical morphology was reconstructed during ZIF-67 growth, forming a unique 3D structure with ZIF-67 nanoparticles confined on lamellar substrates. This structure not only provides ideal anchoring sites for ZIF-67 but also alleviates its self-agglomeration and metal ion leaching via spatial confinement. Under optimized conditions, 2 mg of the catalyst achieved 95.12% norfloxacin (NOR) removal within 30 min; positively charged LDHs stabilized negatively charged PMS, while ZIF-67 Co sites triggered the continual production of reactive oxygen species (ROS). DFT calculations showed ZIF-67/FeCu-LDH efficiently activates PMS by enhancing adsorption and interfacial electron transfer. A continuous-flow reactor with this catalyst maintained >90% NOR removal for 8 h, showing good practical potential. Quenching experiments and EPR confirmed SO 4 ·- , ·OH, ·O 2 − and 1 O 2 generation; electrochemical tests verified the participation of type III electron transfer pathway (ETP(III)), with radical-non-radical coupling promoting NOR degradation. Mechanistically, FeCu-LDH lamellar confinement enhances Fe/Cu/Co redox cycles and accelerates electron transfer, supplying sufficient electrons for PMS activation. This study proposes a potential method for designing MOF-in-LDHs composites, providing a reference for the treatment of water contaminated by antibiotics.
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Peng Xu,Tianguan Wang,Jingsha Tan,Wenfeng Ge,Huixuan Qian,Yanwei Zeng,Bing Lei,Honglei Guo,Zhiyuan Feng,Guozhe Meng
In this work, a new type of hollow mesoporous CeO 2 microsphere (HMCM), synthesized through a template-free approach, was utilized as both an inhibitor and a nanocontainer for loading the corrosion inhibitor benzotriazole (BTA). These microspheres were encapsulated with a co -deposition layer composed of polydopamine (PDA) and polyethyleneimine (PEI) to construct smart containers (PDA-PEI@HMCM-BTA) with pH-responsive release properties. The corrosion inhibition effect of PDA-PEI@HMCM-BTA nanocontainers was assessed and the release rate of BTA and Ce ions from the nanocontainers was greatly accelerated in the presence of acidic solutions. Electrochemical impedance spectroscopy (EIS) was conducted to evaluate the barrier properties and active anti-corrosion performance of the coatings. The results showed that the integration of nanocontainers within the waterborne epoxy coating significantly improved the corrosion resistance and self-healing capabilities, thereby providing efficient corrosion protection for carbon steels. The method offered a simplified synthesis route for Ce-based nanocontainers and presented a strategy for producing waterborne epoxy coatings with active anticorrosive properties.
研究领域:
材料科学
·
腐蚀与防护
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2021
·
IF 9.147
Sunan Gao,Mingyi Yang,Zisheng Luo,Zhaojun Ban,Ya Pan,Mengyun Tu,Quan Ma,Xingyu Lin,Yanqun Xu,Li Li
In this work, the soy protein/chitosan-based microsphere (SCM), as a stable biocompatible vehicle of oleanolic acid (OA), was constructed for the first time under acidic conditions, and OA was firstly used for quality maintenance of minimally processed products. The effect of soybean protein isolate/chitosan ratio, particle concentration and oil fraction on emulsion stability was studied. Additionally, the interfacial characteristics of SCM with and without loading OA were determined by cryo-SEM. Results demonstrated that the encapsulation efficiency of SCM embedded with 0.15% OA (SCM-OA 0.15% ) rated up to 87.53% ± 2.23%, and SCM-OA showed smaller particle size, greater stability, and better liquid-state behavior, as well as the enhanced antibacterial and antioxidant properties in comparison to the control and SCM group. The minimally processed apples were used to evaluate the potential application of SCM-OA delivery system and it was evident that SCM-OA contributed to reducing weight loss, maintaining total phenol content and inhibiting color browning of minimally process apples. These findings shed new light on the emerging biocompatible vehicles of plant-derived bioactive substance.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2020
·Vol. 8
·期 37
·12984-12992
·
IF 7.059
Awais Siddique Saleemi,Muhammad Hafeez,Aqsa Munawar,Naeem Akhtar,Waseem Abbas,Muhammad Ehsan Mazhar,Zahid Shafiq,Anthony P. Davis,Shern-Long Lee
Arsenic(III) poisoning may lead to neurological disorders, heart diseases or carcinogenic effects due to long-term exposure. The presence of arsenic in drinking water is a widespread problem and presents an important analytical challenge. Among the methods for As(III) monitoring, electrochemical analysis offers fast response, low detection limits and high sensitivity. Here we report a novel system, which achieves exceptional performance without use of expensive noble metals by exploiting a metal oxide rich in oxygen vacancies (OVs). Novel OV-rich spinel ZnFe2O4 microspheres (ZF-Ms) were synthesized and applied to electrochemical monitoring of As(III) in underground drinking water by square wave anodic stripping voltammetry (SWASV) in acetate buffer (pH 6.0). To boost sensing capability, the surface of ZF-Ms was further wrapped with carbon and nitrogen rich nanodots (CNs) and modified with benzimidazolium-1-acetate ionic liquid (IL). The designed CN-wrapped IL-modified ZF-Ms (CN@ZF-Ms-IL) sensor offered an ultra-low detection limit of 0.0006 ppb (based on the 3σ method), high sensitivity (41.08 μA ppb−1) and a wide linear range (∼1–60 ppb) including the World Health Organization (WHO)'s desirable range (10 ppb). To the best of our knowledge, the system outperforms most alternatives based on noble metal electrodes and almost all those based on the reported metal-free electrochemical sensors. A possible sensing mechanism is proposed and supported with experimental evidence. Additionally, the system has been successfully applied to monitor arsenic-contaminated real ground drinking water collected from a flood-affected area, Muzaffargarh, Punjab, Pakistan.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Xiu Wang,Wei Li,Shijie Dai,Menghua Dou,Saisai Jiao,Jing Yang,Weiwei Li,Ya Su,Qianjin Li,Jianlin Li
The aim of this research was to develop a simple, rapid, sensitive, high-throughput detection method for foodborne Escherichia coli (E. coli) O157:H7 based on the aptamer-modified gold nanoparticles@macroporous magnetic silica photonic microsphere (Au@MMSPM). Such Au@MMSPM array system for E. coli O157:H7 not only integrated sample pretreatment with rapid detection, but also showed highly enhanced effect to develop a highly sensitive SERS assay. The established SERS assay platform gave a wide linear detection range (10–10 6 CFU/mL) and low limit of detection (2.20 CFU/mL) for E. coli O157:H7. The whole analysis time including sample pretreatment and detection was 110 min. This SERS-based assay platform provided a new high-throughput, highly sensitive and fast detection technology for monitoring E. coli O157:H7 in real samples from the fields of food industry, medicine and environment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Dongsheng Chen,Xiangyang Xu,Pengtao Lei,Jianyu Ge,Yuanlin Tong,Chenyu Huang,Xianghui Fu
Morphology control and heterostructure construction are two essential aspects in designing and synthesizing photocatalysts . Herein, hollow microsphere heterojunctions of CeO 2 and Ce 3+ doped BiOBr (Ce-BiOBr) were fabricated adopting a facile one-pot solvothermal approach. Owing to the positively charged Ce species, the interlamellar repulsion can be reduced and the specific surface area of these microsphere can be increased. The as-generated Ce 4+ /Ce 3+ redox centers can synergistically improve the transfer and separation efficiency of photogenerated carriers. When used to treat Congo red (CR), 0.1CBOB with a Ce/Bi molar ratio of 0.1:1 exhibits the best photodegradation efficiency (94.63%) and kinetic rate (0.01119 min −1 ) under visible light-emitting diode (LED) light irradiation , which are remarkably superior to pure BiOBr and CeO 2 . The results of radical capture experiment show that photogenerated hole (h + ), superoxide radical (·O 2 − ) are the main active species in the process of photocatalytic degradation.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Zilun Hao,Daoyuan Nie,Meng Zhang,Weiwei Wang,Dong Zou,Guangze Nie
The engineering of macroscopic architectures by loading MoS 2 nanosheets onto larger framework materials is an efficient strategy to overcome the limitations preventing the application of nanosized MoS 2 -based adsorbents for Pb(II) removal. However, the large-scale utilization of these nanocomposites still faces several challenges as a result of their poor stability, slow adsorption kinetics, and low MoS 2 utilization. Herein, a practical and efficient nanocomposite (MoS 2 /PDA/MPS) was prepared by coating MoS 2 nanoflowers onto micron-sized polystyrene beads (MPS) via the construction of a strong adhesive polydopamine (PDA) interlayer. The PDA interface can adhere to the MPS surface and immobilize the MoS 2 nanopartices, thus facilitating the application of MoS 2 /PDA/MPS in flow-through systems. Further, the flower-like structure of the MoS 2 on the outer surface of the host exposes active sites and facilitates mass transfer compared to those of traditional nanocomposites. Meanwhile, the R-SO 3 - groups of MPS can enhance permeation and preconcentrate the Pb(II) ions via the Donnan membrane effect, resulting in improved adsorption kinetics and capacity. Batch adsorption experiments revealed that MoS 2 /PDA/MPS shows fast adsorption kinetics (<45 min), exceptional adsorption capacity (371.7 mg/g, calculated from the Langmuir model at 298 K), and high adsorption selectivity for Pb(II) uptake. The excellent stabilities and reusability of the nanocomposite were tested over 10 adsorption–desorption cycles. In addition, a considerable working capacity (approximately 2000 BV) in synthetic wastewater was observed in fixed-bed column tests, and the used adsorbent could be readily regenerated with a binary NaCl–EDTANa 2 solution for reuse without significant capacity loss. Thus, MoS 2 /PDA/MPS has great applications for the remediation of lead-containing wastewater, and our findings provide new insights into the preparation of efficient MoS 2 -based adsorbents having practical applications.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2016
·
IF 3.15
Meng Tian,Xueliang Cui,Chunxu Dong,Zhengping Dong
In this study, a novel catalyst has been prepared through supporting Pd nanoparticles (NPs) on the surface of boehmite (γ-AlOOH) based hollow aluminosilicate microspheres (HAM@γ-AlOOH). The prepared Pd/HAM@γ-AlOOH catalyst has high catalytic activity for the hydrogenation of nitroarenes to their corresponding amino derivatives with high yields at ambient conditions. The high catalytic efficiency is attributed to the large pore size of the flower-like hierarchical flakes structure of HAM@γ-AlOOH, that gives Pd NPs on the support surface easy accessibility. Moreover, the Pd/HAM@γ-AlOOH catalyst can also be easily recycled at least five times without obvious decrease of catalytic activity. This work may provide a useful method for the fabrication of supported noble metal NP-based catalysts on the surface of mesoporous hierarchical structure materials with easy accessibility and superior activity.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2013
·
IF 4.612
Weina Wang,Ruiyang Ma,Qiuhua Wu,Chun Wang,Zhi Wang
In this paper, a magnetic microsphere-confined graphene adsorbent (Fe 3 O 4 @SiO 2 -G) was fabricated and used for the extraction of five polycyclic aromatic hydrocarbons (fluorene, anthracene, phenanthrene, fluoranthene and pyrene) from environmental water samples prior to high performance liquid chromatography with fluorescence detection. The Fe 3 O 4 @SiO 2 -G was characterized by various instrumental methods. Various experimental parameters that could affect the extraction efficiencies, such as the amount of Fe 3 O 4 @SiO 2 -G, the pH and ionic strength of sample solution, the extraction time and the desorption conditions, were investigated. Due to the high surface area and excellent adsorption capacity of the Fe 3 O 4 @SiO 2 -G, satisfactory extraction can be achieved with only 15 mg of the adsorbent per 250 mL solution and 5 min extraction. Under the optimum conditions, a linear response was observed in the concentration range of 5–1500 ng L −1 for fluorene, 2.5–1500 ng L −1 for anthracene and 15–1500 ng L −1 for phenanthrene, fluoranthene and pyrene, with the correlation coefficients ( r ) ranging from 0.9897 to 0.9961. The limits of detection (S/N = 3) of the method were between 0.5 and 5.0 ng L −1 . The relative standard deviations (RSDs) were less than 5.6%. The recoveries of the method were in the range between 83.2% and 108.2%. The results indicated that this graphene-based magnetic nanocomposite had a great adsorptive ability toward the five polycyclic aromatic hydrocarbons from environmental water samples.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）