RSC Advances
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2024
·Vol. 14
·期 17
·12049-12057
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IF 3.9
Xiaofan Su,Yaqi Lin,Xingyu Hu,Xinzhi Tan,Yao Mai,Minyan Jiang,Ruitao Zhang,Fangjun Huo,Lei Liu,Weidong Tian,Li Xie
A novel sustained chlorine-releasing polydimethylsiloxane/Ca(ClO)2 (PDMS/Ca(ClO)2) material was fabricated by encapsulating Ca(ClO)2 in a PDMS matrix due to its high hydrophobicity and high chemical stability, which showed immediate-responsive and long-lasting antibacterial capabilities in aqueous conditions. Free chlorine could be released from the PDMS/Ca(ClO)2 after immersion in water for 2 min and could also be sustainedly released for 2 weeks, while the released concentration is negatively related to the duration time and positively with the initial Ca(ClO)2 contents. Additionally, Ca(ClO)2 powder as a filler significantly affects the crosslinking and pore size of PDMS. The PDMS/Ca(ClO)2 materials exhibited enduring antibacterial performance against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) in both planktonic and multispecies-biofilm status. It is expected that this PDMS/Ca(ClO)2 material and its similar composite would be promising candidates for wide sustainable disinfection applications in biomedical and industrial fields.
研究领域:
材料科学
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生物医学工程
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微生物学
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化学工程
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiao yuan Luo,Tianrui Zhou,Zhen Wang,Yuntong Liang,Lihua Fu,Chuanhui Xu,Bai Huang,Baofeng Lin
Eutectogels have emerged as promising materials for disinfection applications under complex environmental conditions, owing to their remarkable stability and adaptive properties. In this study, a deep eutectic solvent (DES)-activated eutectogel (PVA/CMC-ZE@NaClO 2 ) was developed through physical cross-linking of polyvinyl alcohol (PVA) and carboxymethyl cellulose (CMC) within a DES medium. The resulting gel exhibits dual-responsive behavior to both temperature (−20 to 50 °C) and humidity (55–90 % RH), enabling intelligent and sustained release of ClO₂ even under extreme environmental conditions. A key innovation lies in the role of DES as an activator, which reacts with NaClO₂ under moisture stimulation to continuously generate gaseous ClO₂. The eutectogel demonstrates high structural integrity across challenging environments—including cold, humid, and dry settings—maintaining stable ClO₂ release for over 20 days. This prolonged disinfectant delivery confers strong antibacterial efficacy, making the material suitable for broad public health applications. Additionally, the gel is readily reshapeable and reusable, while also being fully biodegradable within 20 days under ambient conditions. This work presents the first example of a eutectogel-based slow-release system for ClO₂, offering a new paradigm for designing intelligent, environmentally adaptive materials with extended release performance for disinfection in extreme settings.
研究领域:
材料科学
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环境化学
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抗菌技术
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智能响应材料
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可持续消毒
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高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 10
·1-11
·
IF 5.3
Wang Liu,Wang Mingli
A selective detection strategy is proposed for the determination of residual hypochlorite in drinking water. Flower-like Fe 3 O 4 @SiO 2 @Ag magnetic nanoparticles can aggregate on a silver film-coated magnetic substrate surface under a magnetic field, enabling the separation and enrichment of the analyte from the sample. 4-Mercaptophenol is functionalized on magnetic nanoparticles enabling quantitative detection of ClO − through a “signal off” mechanism. This substrate exhibits high sensitivity, with an analytical enhancement factor calculated using Rhodamine B (RhB) as an example reaching 1.89 × 10 5 , and a detection limit for ClO − as low as 0.0125 mg/L. The substrate also demonstrates good uniformity, reproducibility, and selectivity. Detection in actual drinking water samples indicates the potential application of this detection strategy in food safety. Graphical
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高影响因子
ANALYST
·
2020
·Vol. 145
·期 6
·2212-2218
·
IF 3.978
Huilin Zhang,Yifang Gao,Yuan Jiao,Wenjing Lu,Shaomin Shuang,Chuan Dong
A ratiometric fluorescent N,S co-doped carbon dots (N,S-CDs) probe for ClO− has been facilely obtained via a one-step hydrothermal method. The N,S-CDs revealed dual emission at 478 and 552 nm with excitation at 377 nm. The intensity of the fluorescence at 478 nm remained unchanged and the fluorescence at 552 nm was quenched dramatically in the presence of ClO−. The corresponding fluctuation of color occurred from yellow to blue upon exposure to a UV lamp. Oxidation reaction of functional groups on the surface of the N,S-CDs resulted in this evident quenching. The highly ratiometric fluorescent N,S-CDs probe exhibited excellent sensitivity and selectivity towards ClO−. The quantitative analysis of ClO− showed a linear range of 0.067–60 μmol L−1 with a detection limit of 9.1 nmol L−1 (S/N = 3). Furthermore, the N,S-CDs have promising applications in paper-based fluorogenic devices for fast and easy sensing of ClO−. The ratiometric fluorescent probe could also be further used in cellular imaging, due to low toxicity, good water solubility and biocompatibility, and also has great potential in biosensing and bioimaging.
研究领域:
分析化学
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生物医学
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材料科学
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PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Cheng-lu Zhang,Chang Liu,Shi-ru Nie,Xiang-ling Li,Yi-ming Wang,Yang Zhang,Jing-hao Guo,Yue-dong Sun
On the basis of classical Schiff base reaction, two novel and efficient fluorescent probes ( DQNS , DQNS1 ) were designed and synthesized by introducing Schiff base structure into dis-quinolinone unit for structural modification, which can be used to detect Al 3+ and ClO − . Because the power supply capacity of H is weaker than that of methoxy, DQNS shows better optical performance: a large Stokes Shift (132 nm), identify Al 3+ and ClO − with high sensitivity and selectivity, low detection limit (29.8 nM and 25 nM) and fast response time (10 min and 10 s). Through the working curve and NMR titration experiment, the recognition mechanism of Al 3+ and ClO − (PET and ICT) probes are confirmed. Meanwhile, it is speculated that the probe has continuity for the detection of Al 3+ and ClO − . Furthermore, DQNS detection of Al 3+ and ClO − was applied to real water samples and living cell imaging.
研究领域:
化学
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生物学
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高影响因子
JOURNAL OF FLUORESCENCE
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2024
·
IF 2.6
Ma Xue,Hu Qingqing,Yuan Jingxue,Feng Yao,Cheng Zhengjun
A selective and sensitive fluorescence method for hypochlorite (ClO − ) was designed using glutathione (GSH) modified silicon-doped carbon quantum dots (GSH@Si-CDs). Then a dual emission ratio fluorescence probe (RF-probe) was obtained based on carbodiimide-activated coupling reaction between GSH and Si-CDs. i.e., when the excitation wavelength was kept at 360 nm, the GSH@Si-CDs exhibited strong blue and weak yellow fluorescence at 430 and 580 nm. Meanwhile, the fluorescence of GSH@Si-CDs could be selectively quenched at 430 nm and enhanced at 580 nm in the presence of ClO − , and corresponding limit of detection (LOD) and linear range were measured to be 0.35 µM and 1.0-33.3 µM. The sensing mechanism of the system was also investigated in detail. Moreover, the RF-probe with good accuracy was successfully employed to monitor ClO − in real samples with satisfactory results compared to the standard iodometric method.
研究领域:
分析化学
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材料科学
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纳米技术
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Xin Li,Miao Kan,Tian Wang,Zhixiao Qin,Ting Zhang,Xufang Qian,Yasutaka Kuwahara,Kohsuke Mori,Hiromi Yamashita,Yixin Zhao
Photoelectrochemical generation of reactive chlorine species (PEC-RCS) is a promising approach for wastewater treatment . However, the inevitable byproduct of harmful oxychloride (such as ClO 3 − and ClO 4 − ) severely limits the practical applications of full-spectrum solar-driven PEC-RCS systems. Herein, we investigated three typical photoelectrodes including TiO 2 , WO 3 and BiVO 4 for PEC-RCS system and the formation of RCS and toxic oxychlorides. In BiVO 4 photoelectrochemical cell, the concentration of ClO 3 − was lower than 0.2 mg/L and the ClO 4 − was undetectable within 2 h of reaction. In contrast, the concentrations of ClO 3 − were 2.3 mg/L and 2.7 mg/L in the widely used WO 3 and TiO 2 PEC-RCS processes, respectively, which exceeded the health standard of 0.7 mg/L raised by the European Food Safety Authority (EFSA). We proposed that the valence band dependent photoelectrochemical properties of BiVO 4 photoelectrodes could lead to the restricted HO· radical production and the non-HO·-mediated RCS generation, which synergistically inhibited the ClO 3 − formation in the RCS activation process.
研究领域:
环境科学
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材料科学
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化学工程
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2020
·
IF 9.038
Jingyang Luo,Wenxuan Huang,Qin Zhang,Yang Wu,Fang Fang,Jiashun Cao,Yinglong Su
The effectiveness of hypochlorites (NaClO and Ca(ClO) 2 ) on the reduction of antibiotic resistance genes (ARGs) during waste activated sludge (WAS) fermentation was determined by the quantitative PCR. NaClO and Ca(ClO) 2 exhibited distinct effects on ARGs fates. Ca(ClO) 2 was effective in removing all investigated ARGs, and the efficiency was highly dose-dependent. Unexpectedly, the NaClO treatment attenuated ARGs with lower efficiency and even caused the propagation of certain ARGs (i.e . , aad A1 and tet Q) at higher doses. The extracellular polymeric substances dissolution and membrane integrity suggested that unstable NaClO had acute effects on bacteria initially, while it was ineffective to further attenuate ARGs released from hosts due to the rapid consumption of oxidative ClO - . Without lasting and strong oxidative stress , the microbial activities of tolerant ARGs hosts will partially recover and then contribute to the ARGs dissemination across genera. In contrast, solid-state Ca(ClO) 2 was slowly released and exhibited prolonged effects on bacteria by disrupting cell membranes and removing the susceptible ARGs released from hosts. Furthermore, bacterial taxa-ARG network analysis indicated that Ca(ClO) 2 reduced the abundance of potential hosts, and the metabolic pathway and gene expression related to ARGs propagation were significantly downregulated by Ca(ClO) 2 , which contributed to efficient ARGs attenuation.
研究领域:
环境工程
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微生物学
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遗传学
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2020
·
IF 3.232
Yuanyuan Li,Lei Liu,Yong Tang,Yun Wang,Juan Han,Liang Ni
In this study, a new fluorescence probe HMAQ based on quinazoline and diaminomaleonitrile was constructed for sensing ClO − and Al 3+ . A fluorescence blue-shift with 102 nm together with a color change from golden-yellow to colorless was found by hypochlorite-induced hydrolysis of –CH=N- group to release the initial fluorophore. Besides, Al 3+ could cause a 72-nm blue-shifted emission spectra and a color change from golden-yellow to brown. As expected, HMAQ exhibited a satisfactory selectivity and sensitivity to ClO − /Al 3+ with a quick response. Most notably, the reversibility of the [HMAQ+Al 3+ ] complex could be used to detect ClO − and Al 3+ simultaneously without mutual interferences. The detection limits of HMAQ for ClO − and Al 3+ were turned out to be 10.2 nM and 1.56 nM, respectively. The high-performance results of real-time detections demonstrated the enormous potential of HMAQ in real-water samples and living cells.
研究领域:
分析化学
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生物医学
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材料科学
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2020
·
IF 3.594
Qiwen Jiang,Yi jing,Yeyan Ni,Ruoshi Gao,Pingyan Zhou
Chitin, a functional carbohydrate derived from waste products of seafood industry, contains abundant nitrogen, which makes it become a very suitable carbon precursor for the synthesis of carbon quantum dots (CQDs). Demonstrated in this work was synthesizing CQDs using this N-enriched primary feed-stock. The as-prepared N-doped carbon quantum dot( N-CQDs ) showed both photoluminescence exposed to UV radiation and a good potentiality in fluorescent sensor for detecting of ClO − . Significantly, the detection limit of ClO − was 1.47 μM and its linear range was 0–50 μM (R 2 = 0.9922). In addition, the structures and properties of the N-CQDs were further investigated. As indicated in the results, the N-CQDs exhibited a spheroidal morphology with an average diameter of 4.21 nm. Its quantum yield was 25.8%. Moreover, the N content of this N-CQDs increased to 9.89%, consisting of multiple functional groups such as N , C N and N H.
研究领域:
材料科学
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生物化学
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高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2024
·
IF 4.1
Duanyang Wu,Shengnan Zhang,Jing Xu,Wei Cheng
Carbamazepine (CBZ) is a ubiquitous persistent micropollutant in water. This study evaluated the degradation of CBZ by UV/Chlorine process. The influencing factors, such as chlorine dosage, solution pH, and water matrix constituents (Cl − , HCO 3 – and NOM) on CBZ removal were systematically investigated. The reactive HO•, Cl• and ClO• species were mainly responsible for the degradation of CBZ, and their contributions determined by probes (Benzoic acid, Nitrobenzene and 1,4-Dimethoxybenzene) varied with pH. Theoretical quantum calculations involving a total of 79 transition states suggested that HO• attack CBZ by hydrogen atom transfer (HAT) and radical adduct formation (RAF) mechanisms, while Cl• and ClO• proceed mainly through HAT and RAF mechanism, respectively. The reaction rates between CBZ and free radicals were calculated by evaluating the energy barriers and transition states. Furthermore, the proposed formation pathways and reaction mechanisms of main hydroxylated products and chlorine substituted products were unequivocally authenticated by transition states calculations. Overall, this study combined experimental and computational approaches to provide an in-depth degradation mechanism of CBZ in UV/Chlorine process.
研究领域:
环境科学
·
化学工程
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高影响因子
RSC Advances
·
2024
·Vol. 14
·期 39
·28957-28964
·
IF 3.9
Lu Yang,Yanglin Jiang,Ailin Sun,Mingqing Chen,Qiwei Li,Peng Wang,Jianping Zhang
Two styryl BODIPY derivatives, BOH and BOE, with different hydrophilic properties, were investigated for their reaction mechanisms in lipid bilayers against aqueous ClO−, by both experimental and theoretical methods. Density functional theory (DFT) calculations confirmed their identical conformations in solution. Fluorescence spectra and high-resolution mass spectra corroborated the central vinyl group as a common antioxidation moiety against ClO− oxidation. In giant unilamellar vesicles (GUVs), distinct reaction kinetics with ClO− suggested that BOE provided superior protective effects compared to BOH on lipids. Molecular dynamics simulations indicated that the lipophilic octyloxy group in BOE led to its deeper localization within the lipid phase, bringing it closer to the corresponding lipid target group. This study establishes the two styryl BODIPYs as promising fluorescent probes for detecting aqueous ClO− in lipid-water polyphasic systems.
研究领域:
生物化学
·
分子生物学
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高影响因子
危险品化学品经营许可证（带存储）