ENVIRONMENTAL POLLUTION
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2017
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IF 5.099
Shuai Liu,Pingxiao Wu,Meiqing Chen,Langfeng Yu,Chunxi Kang,Nengwu Zhu,Zhi Dang
Three novel organic vermiculites (VER) modified by amphoteric surfactants (BS, SB and PBS) with different negatively charged groups (carboxylate, sulfonate and phosphate) were demonstrated and used for removal of bisphenol A (BPA) and tetrabromobisphenol A (TBBPA). The difference in the structure and surface properties of modified vermiculites were investigated using a series of characterization methods. BS and SB surfactant mainly adsorbed on the surface and hard to intercalate into the interlayer of VER, while both adsorption and intercalation occurred in PBS modification. This difference resulted in different packing density of surfactant and hydrophobicity according to the results of contact angle, and affect the adsorption capacities ultimately. The adsorption of two pollutants onto these modified vermiculites were very fast and well fitted with pseudo-second-order kinetic model and Langmuir isotherm . PBS-VER exhibited the highest adsorption capacity (92.67 and 88.87 mg g −1 for BPA and TBBPA, respectively) than other two modified vermiculites in this order PBS-VER > BS-VER > SB-VER. The ionic strength (Na + , Ca 2+ ) and coexisting compounds (Pb 2+ , humic acid) have different effects on the adsorption. PBS-VER had a good reusability and could remove ionic (methylene blue and orange G) and molecular (BPA) pollutants simultaneously and effectively due to the function of amphoteric hydrophilic groups and alkyl chains. The results might provide novel information for developing low-cost and effective adsorbents for removal of neutral and charged organic pollutants .
研究领域:
环境科学
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吸附材料
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污染控制
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环境化学
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功能材料
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2018
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IF 6.735
Mantang Chen,Zhimin Zhang,Lihua Zhu,Nan Wang,Heqing Tang
The present work aimed at using bisulfites (HSO 3 − ) to enhance the oxidative degradation of bisphenol A (BPA) in a Fenton process based on the Fe 3+ -H 2 O 2 reagents. It was confirmed that both the degradation and mineralization of BPA were drastically enhanced by the addition of HSO 3 − . Typically, the use of 0.1 mmol L −1 Fe 3+ , 0.3 mmol L −1 HSO 3 − and 10 mmol L −1 H 2 O 2 achieved a complete degradation of BPA (0.05 mmol L −1 ) in only 2 min. The addition of HSO 3 − increased the BPA degradation rate constant from 0.045 min −1 in the Fe 3+ -H 2 O 2 system to 2.71 min −1 in the Fe 3+ -HSO 3 − -H 2 O 2 system by 60 times. This drastic enhancement effect of HSO 3 − was attributed to its complexing and reducing abilities. The formation of FeSO 3 + complex prevented the precipitation of Fe 3+ and accelerated the cycling of Fe 3+ /Fe 2+ ; the reducing ability of HSO 3 − further favored the transformation of Fe 3+ to Fe 2+ . Several reactive species, including OH, SO 3 − and SO 4 − were responsible for the degradation of BPA, among which OH was the dominant one. The proposed Fe 3+ -HSO 3 − -H 2 O 2 system is suggested be able to act as the followed stage of a traditional Fe 2+ -H 2 O 2 system in the engineering setting.
研究领域:
环境科学
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化学工程
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污染控制
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高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 13
·期 2
·1556-1567
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IF 1.5
Zhihong Yan,Bo Fu,Jincheng Chen,Tailin Liu,Kang Li
Bisphenol A (BPA) was successfully electrodeposited on glassy carbon electrode modified with the chitosan-graphene (Chit-GR/GCE) by multiple sweep voltammetry under ultraviolet (UV) irradiation. The experimental conditions of the BPA deposits and the probable oxidation mechanism were investigated. Two oxidation peaks (peakII=0.12 V, peakIII=0.20 V) appeared in a suitable potential range of 0.0V and 0.2V at the Chit-GR/GC eletrode in the presence of UV light, and it could be seen that the oxidation peak current increased with the increase of UV irradiation time. The emerging peakIII was reported firstly in the work, which showed that the Chit-GR modified electrode had catalytic activity on the oxidation of BPA. Based on the oxidation peak (III) of BPA oxidative porducts on the Chit-GR/GC electrode under UV irradiation, the electrochemical sensor was fabiracated for determination of BPA. The calibration curve was obtained in the range of 5.0 to 200.0 μM with the limit of detection of 0.34 μM (S/N=3) and the response sensitivity of 0.33 μA μM -1 , which was higher than those of the method of determining BPA based on the direct oxidtation of BPA (0.98 μM (S/N=3), 0.12 μA μM -1 ). It was applied successfully for determination of BPA in lake, soil and plastic bottle samples. The new strategy, based on anodic electrodeposition and photocatalytic oxidation of BPA oxidation porducts, was provided for determination of BPA under UV irradiation. It was green, evironmental and effective.
研究领域:
分析化学
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环境监测
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电化学传感
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污染物检测
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材料科学
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高影响因子
RSC Advances
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2025
·Vol. 15
·期 48
·40789-40800
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IF 4.6
Wei Zhang,Min Liu,Honghui Cheng,Jiafeng Di,Geng Huang,Hua Lai
The application of reactive macromolecular flame retardants in polymers is gaining increasing attention. In this study, the polymer PBOZ-DOPO was readily synthesized via nucleophilic addition between 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and a main-chain benzoxazine polymer (PBOZ). It was utilized as both a co-curing agent and polymeric flame retardant for epoxy resin, yielding epoxy thermosets designated as Pn, where n represented the phosphorus content in the cured polymers (n wt%). While all epoxy thermosets retained good transparency, the addition of PBOZ-DOPO reduced thermal stability, as indicated by thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA). Fortunately, the macromolecular structure and the presence of active OH groups in PBOZ-DOPO helped alleviate the decline in glass transition temperature (Tg). When the phosphorus content was below 0.5 wt%, the Tg loss was less than 10 °C. PBOZ-DOPO imparted highly efficient flame retardancy to the epoxy resin. With a phosphorus content of only 0.3 wt%, the epoxy thermoset P3 achieved a limiting oxygen index (LOI) of 34.1% and met the vertical burning (UL-94) V-0 rating. Cone calorimetry tests demonstrated a progressive decrease in heat release rate (HRR), total heat release (THR), and total smoke production (TSP) from P0 to P5. Scanning electron microscopy (SEM) and Raman spectroscopy further revealed that the amount of graphitized carbon layers formed during combustion increased consistently from P0 to P5, supporting the enhanced flame-retardant performance. Tensile tests indicated that the incorporation of PBOZ-DOPO did not significantly compromise tensile strength or elongation at break, particularly in the case of P3. Overall, the results confirmed that PBOZ-DOPO was an excellent flame retardant with well-balanced properties for epoxy resin.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Dongyun Que,Zihan Li,Fan Chen,Youwei Zeng,Junchi Liu,Yuyuan Yao
Designing highly efficient iron-based catalysts with adsorption and degradation of pollutants is a great challenge in the field of environmental remediation. Herein, a dual strategy of anchoring-separation was adopted to prepare novel iron-based nitrogen doped porous carbon catalysts (Fe-pNC). Arginine was innovatively selected as the anchoring agent to coordinate with Fe 3+ and even form oligomers with glucose, which was conducive to the dispersion of iron species during high-temperature pyrolysis. Fe-pNC achieved high iron loading of 16.48 wt% and large specific surface area of 480.19 m 2 /g. The Freundlich model determined a maximum SMX adsorption capacity (Qm) of 82.38 mg/g for Fe-pNC, surpassing most of recently reported SMX adsorbents. Interestingly, even after multiple PMS regenerations, Fe-pNC still exhibited excellent adsorption performance. Surprisingly, Fe-pNC exhibited better adsorption performance at low temperature, achieving 90.58 % adsorption rate at 0 °C. More importantly, the Fe-pNC/PMS system achieved 99.11 % SMX removal in 15 min with a superior apparent rate constant (k obs ) of 0.54 min −1 . Of particular significance, Cl − markedly enhanced the catalytic efficacy of the Fe-pNC for SMX removal, remarkably enhancing the catalytic degradation performance even at high concentrations. Quenching experiments combined with electron paramagnetic resonance (EPR) detections demonstrated that single-linear oxygen 1 O 2 ) and superoxide radicals (O 2 •− ) were the major reactive oxygen species (ROSs). This study provides a significant guidance into developing efficient iron-based catalysts for adsorption and removal of organic pollutants.
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Environmental Science-Nano
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2025
·
IF 5.1
A. Hefnawy,Mona A. Aziz Aljar,Hisham S. M. Abd-Rabboh,Ayman H. Kamel
A novel potentiometric sensor based on molecularly imprinted polymer (MIP) beads embedded in an asymmetric membrane configuration was developed for the trace monitoring of tetrabromobisphenol A (TBBPA), a widely used brominated flame retardant and persistent environmental pollutant. The sensor was fabricated by incorporating TBBPA-imprinted beads into a poly(vinyl chloride) (PVC) membrane plasticized with dioctyl phthalate (DOP) and drop-cast onto a reduced graphene oxide (rGO)-modified screen-printed electrode. The asymmetric design featured a surface-enriched ion-exchange layer, enabling enhanced accumulation of deprotonated TBBPA at the membrane interface. Under optimized conditions, the sensor exhibited a near-Nernstian slope of −56.6 ± 1.2 mV per decade over a linear range of 5.0 × 10−6 to 10−3 M and a detection limit of 5.5 × 10−7 M. The sensor demonstrated high selectivity toward TBBPA over structurally related phenols and common anions, with the enhanced discrimination attributed to the imprinting effect and nano-scale recognition features. Application to spiked environmental samples including wastewater, sediment, and plastic leachates yielded recoveries between 95.6% and 102.3%, with no significant deviation from high-performance liquid chromatography (HPLC) results (p > 0.05). The proposed MIP-based asymmetric membrane sensor offers a portable, cost-effective, and highly selective platform for on-site environmental monitoring of TBBPA.
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CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Yuanjie Teng,Pei Xu,Zihang Zhou,Ning Xu,Jiayi Qiu,Yi Zhong,Jie Li,Haimin Shen,Zaifa Pan,Tianyu Hu,Xingchen Zhang,Yantao Lou
The selective detection of weakly adsorbing, low-abundance molecules in complex biological environments remains a fundamental limitation of conventional surface-enhanced Raman scattering (SERS) technology. Here, we engineered a macrocyclic supramolecular pillararene-bridged gold nanoparticle assembly to create sub-nanometer plasmonic gaps with intense electromagnetic hotspots, enabling ultrasensitive molecule detection in complex matrix. The pillararene-functionalized interface not only enhanced SERS signals (with enhancement factor of 1.3 × 10 7 for curcumin, a model phenolic drug), but also provided selective recognition of phenolic biomarkers through host–guest chemistry, effectively suppressing background noise in water, cell lysate and serum environments. Combined with single-molecule counting, the detection limit reached to 1.03 × 10 −12 mol/L for curcumin. Cellular imaging experiments demonstrated that the pillararene linker facilitated intracellular delivery of curcumin while simultaneously amplifying its Raman signal, enabling real-time tracking of drug distribution at subcellular resolution. This work establishes a versatile detecting platform that integrates supramolecular targeting with plasmonic enhancement, advancing spatially resolved detection of low-abundance molecules in complex biological environments for precision diagnostics and therapeutic evaluation.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Jintao Dong,Jing Hong,Zhishuai Wang,Pengjun Liu,Gaopeng Liu,Lina Li,Shengqun Cao,Bin Wang,Jiexiang Xia
For achieving the broad-spectrum removal ability of g-C 3 N 4 materials for various contaminants, it is assessed as critical core by synchronously enhancing the solar absorption-conversion and PMS adsorption-activation process of g-C 3 N 4 materials. In this manuscript, S-scheme high-entropy FeMnCoNiCu-LDHs/self-assembly carbon nitride nanotubes (LDHs/SCN) heterojunction were established by mechanical-assisted ball milling, calcination, and hydrothermal method. Contributed to the synergistic effect of multi-metal elements in FeMnCoNiCu-LDHs materials, the photocatalytic PMS activation efficiency of LDHs/SCN composites is benefit from the efficient conversion of Fe 3+ /Fe 2+ , Mn 4+ /Mn 3+ , Co 3+ /Co 2+ , Ni 3+ /Ni 2+ , and Cu 2+ /Cu + redox cycles. So, under 0.1 mM PMS and visible light irradiation, the removal efficiency of bisphenol A (BPA), ciprofloxacin (CIP), 2-mercaptobenzothiazole (MBT), oxytetracycline (OTC), tetracyclines (TC), and sulfadiazine (SD) pollutants in LDHs/SCN-0.2/PMS/Light system reach to 91.1 %, 82.8 %, 94.7 %, 86.8 %, 91.4 % and 63.0 %, respectively. Furthermore, the enhancement mechanism of the photocatalytic PMS activation performance of LDHs/SCN-0.2/PMS/Light system has been elucidated through ESR, UPS, ROS quenching experiments, and band structure analysis. The LC-MS and T.E.S.T. software was successively employed for intermediates transformation pathways and bio-toxicity during BPA degradation. Consequently, this work lays a foundational basis for the design and construction of highly efficient S-scheme heterojunctions for advanced wastewater purification.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Rui Feng,Linyuan Song,Haodong Wang,Shixuan Gong,Yangguo Su,Shudong Zhang,Ning Li,Zhao Zhang
Bisphenol A (BPA) and cadmium (Cd 2 + ) are typical endocrine-disrupting compounds (EDCs) that often coexist in aquatic environments and disrupt hormonal pathways, causing adverse effects on organisms. This study showed that both BPA and Cd 2+ exhibited hormesis effects on Chromochloris zofingiensis , with promoting concentrations of 0.1 mg L −1 and 0.05 mg L −1 , while inhibiting concentrations of 10 mg L −1 and 2.5 mg L −1 , respectively. The combination of inhibiting concentrations of BPA and Cd 2+ significantly elevated intracellular reactive oxygen species level, which resulted in more severe growth inhibition and storage substances accumulation. Additionally, the presence of Cd 2+ significantly enhanced the degradation rate of BPA by a minimum of 11.8 %, simultaneously shifting the degradation pathway from glycosylation to hydroxylation products. Notably, co-exposure to 0.1 mg L −1 BPA alleviated the inhibitory effects caused by 2.5 mg L −1 Cd 2+ , while weakened the promotion effects caused by 0.05 mg L −1 Cd 2+ . Comparative transcriptome analysis revealed that 0.1 mg L −1 BPA attenuated Cd 2+ inhibitory effects by upregulating the expression of the DNA mismatch repair ATPase MLH1 gene involved in mismatch repair. This study provides insights into toxic mechanisms of BPA and Cd 2+ to microalgae together with their biodegradation patterns, which offers a theoretical basis for the assessment of the risks of coexisted EDCs in the aquatic ecosystems .
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Shuang Ma,Zhipeng Zhang,Huizi Zheng,Qi Feng,Jiao Qu,Xiaolin Zhu
Tetrabromobisphenol A (TBBPA), a hazardous brominated flame retardant prevalent in aquatic environments, poses risks to ecological systems and public health, underscoring the need for advanced and reliable monitoring tools. In this study, an electrochemical sensor based on a graphite carbon nitride/cuprous oxide (g-C 3 N 4 /Cu 2 O) nanocomposite was developed for sensitive TBBPA detection. The g-C 3 N 4 /Cu 2 O composite, uniformly modified onto a glassy carbon electrode, improved the dispersion of Cu 2 O, facilitated interfacial electron transfer, and provided abundant electroactive sites, thereby markedly improving the electrocatalytic oxidation of TBBPA. Density functional theory calculations indicated strong adsorption interactions and interfacial charge transfer between TBBPA and the composite, helping explain the enhanced sensing performance. Under optimized conditions, the sensor exhibited a wide linear detection range from 0.01 nM to 1 μM with an ultralow detection limit of 3.98 pM. This performance demonstrated the superior sensitivity of the sensor compared with most previously reported electrochemical sensors for TBBPA and confirmed its suitability for trace-level environmental analysis. The sensor also exhibited remarkable selectivity toward TBBPA in the presence of common interfering species, including ubiquitous inorganic ions (Na + , K + , Fe 2+ ), as well as structurally related phenolic compounds such as bisphenol A, hydroquinone, and catechol. In addition, the sensor displayed outstanding repeatability, reproducibility, and long-term stability. Its practical applicability was successfully validated through accurate determination of TBBPA in real river water samples from the Yitong River, demonstrating its reliability and strong potential for on-site environmental monitoring.
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WATER RESEARCH
·
2026
·
IF 12.8
Ying Liu,Zhenyu Wang,Ducheng Yao,Chengcheng Chu,Zhong Chen,Wei Xiaojie,Jinguo Wang,Shun Mao
The widespread adoption of donor-acceptor polymer photocatalysts remains constrained by two fundamental limitations: inefficient charge carrier separation and the practical drawbacks of powdered catalysts. To overcome these challenges, we implement a synergistic local polarization and mass-transfer engineering strategy. Through rational molecular design, we developed a thiazole-bridged d -A polymer (TATZ) with strong π-conjugation and an enhanced built-in electric field. This molecular architecture not only promotes exceptionally efficient electron-hole separation but also directs the oxygen reduction pathway almost exclusively toward superoxide radical (•O 2 ⁻) formation, responsible for 96.7% of the observed photocatalytic activity. The optimized material achieves a tenfold improvement in photo-oxidation kinetics, enabling complete degradation of ciprofloxacin within 25 min. To translate these molecular advantages into practical implementation, we constructed a macroscopic, scalable sponge-based reactor (20 × 20 cm) through controlled deformation of a TATZ-incorporated hydrogel. This integrated system demonstrates excellent contaminant removal efficiency under continuous-flow operation using natural sunlight, confirming its potential for real-world application. Our work establishes a comprehensive design framework for advancing photocatalytic technology across multiple scales—from molecular motifs to functional macroscopic systems.
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高影响因子
TALANTA
·
2026
·
IF 6.7
Chenhuan Wang,Zhimei Liu,Yang Zhu,Jiayi Zhang,Zhi Li
Herein, a boronic acid-functionalized porous organic polymer (B-TC-POP) was synthesized via a two-step Friedel-Crafts reaction. The B-TC-POP showed remarkable adsorption capability for phenolic endocrine disrupting compounds (EDCs-OH). The adsorption mechanism of B-TC-POP mainly depends on the strong hydrogen bonding and π-π interactions. The B-TC-POP was utilized as a solid-phase extraction adsorbent in combination with high-performance liquid chromatography-mass spectrometry (HPLC-MS) to construct a new analysis approach for highly sensitive determination of several EDCs-OH in chicken and shrimp matrices. The proposed method demonstrated excellent performance, achieving low detection limits (S/N = 3) of 0.30-1.50 ng g −1 (chicken sample) and 0.25-1.30 ng g −1 (shrimp sample), high accuracy (spiked recovery of 86.2 %–108 %), and good precision (relative standard deviation < 7.4 %). This work not only elucidates the potential of boronic acid-functionalized adsorbents in contaminant monitoring but also provides a strategy for designing advanced functional adsorbents with enhanced adsorption efficiency.
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危险品化学品经营许可证（带存储）