JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
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IF 4.598
Yang Zhou,Xiaoyan She,Qiong Wu,Jiangrong Xiao,Tianyou Peng
A novel and sensitive electrochemical sensor based on monoclinic tungsten trioxide (WO 3 ) nanosheets-carbon nanotubes nanocomposite (WO 3 -CNT) modified glass carbon electrode (GCE) is developed for the direct detection of endocrine disruptor bisphenol A (BPA) in textile sample for the first time. The electrochemical behavior of BPA on the resultant WO 3 -CNT/GCE sensor is investigated using electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and chronocoulometry (CC). Under the optimized conditions, the proposed sensor can be adopted to the quantification of BPA using differential pulse voltammetry (DPV), and the electro-oxidation peak current is proportional to the BPA concentration in the range of 0.03–3.0 μM and 3.0–100 μM with a correlation coefficient of 0.9993 and 0.9992, respectively. Moreover, the proposed sensor with a detection limit of 16.3 nM (S/N = 3) exhibits good reproducibility, selectivity and stability, and can be successfully applied to detect the BPA concentrations in real samples (textile, plastic and tap water) with satisfactory recovery (99.4%-110.1%). The present strategy on the hybridization of CNTs and WO 3 enables more opportunities for the electrochemical detection of BPA in the practical applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Zhuoyue Wang,Ji Li,Wei Song,Rui Ma,Jingxin Yang,Xiaolei Zhang,Fan Huang,Wenyi Dong
Recently, (bi)sulfite as the precursor of SO x − generation has drawn significant attention in advance oxidation process based on SO 4 − (SR-AOP) due to its low cost and conforming to waste utilization. The current activation on (bi)sulfite mainly employs the transition metals and their composite materials, which limited its application. In this study, chlorine dioxide (ClO 2 ) was employed to activate bisulfite (BS). It was found that the dominant radicals in BS/ClO 2 process were ClO and SO 4 − according to scavenger experiments and ESR detection. To investigate the performance of the established BS/ClO 2 system, atrazine (ATZ) was used as target pollutant. The degradation efficiency of ATZ reached 86.8% within 3 min and nearly half of the degradation occurred at the first 10 s. The optimum ClO 2 dosage for the ATZ degradation was 100 μM when the BS dosage was 200 μM. The effects of pH, temperature and coexisting substances including halide ions, bicarbonate ion and humic acid on ATZ degradation by BS/ClO 2 were investigated. It is predicted that the degradation pathway of ATZ in this study involved olefination, dealkylation and the combination of dichlorination with hydroxylation according to the final products identified after degradation. The system has also shown the ability on degradation of four pharmaceuticals and personal care products (PPCPs) including ibuprofen, bisphenol A, sulfamethoxazole and carbamazepine. This study reveals that ClO 2 is capable of activating BS and provides a method for effectively degrading refractory organic contaminants .
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高影响因子
Journal of Environmental Chemical Engineering
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2022
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IF 7.968
Xiurong Zhu,Lei Ge,Wei Yan,Shengjiong Yang,Gen Wang,Delu Miao,Pengkang Jin
Heterogeneous activation of peroxymonosulfate (PMS) has been frequently proposed for the degradation of organic pollutants via the generation of reactive oxygen species (ROS). Spinel ferrite such as CoFe 2 O 4 shows great advantage for PMS activation but suffers from aggregation problem and lack of microstructure. Herein, network-like CoFe 2 O 4 immobilized on volcanic rock was synthesized for PMS activation for degrading sulfamethoxazole (SMX). The immobilized CoFe 2 O 4 network exhibited good catalytic performance for SMX removal. Systematic investigations, including in situ ATR-FTIR and Raman spectroscopy analysis, chemical quenching experiments and electron paramagnetic resonance (EPR) tests, revealed that a redox cycle of Co 2+ /Co 3+ induced the generation of ROS (SO 4 •− , OH • and 1 O 2 ) that participated in the degradation of SMX. Background constituents (e.g., inorganic ions and natural organic matters) exhibited limited influence on SMX removal. A continuous flow-through reaction in a fixed-bed column revealed the immobilized CoFe 2 O 4 network could efficient degrade SMX with long-term durability, which therefore can be a promising catalyst for PMS activation for the degradation of SMX.
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高影响因子
POLYMER
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2022
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IF 4.432
Hongyu Jiang,Hong Zhang,Yaqing Wen,Liyun Tan,Xingzhong Fang,Guofei Chen
Mixed isopropylidenebis(1,4-phenylene-oxy) bis(phthalic anhydride)s with different ratios ( Mixed-BPADA 1-3 ) were synthesized successfully via aromatic nucleophilic substitution from nitrophthalonitrile and bisphenol A. The corresponding copolyetherimides (CoPEIs) were prepared with two representative aromatic diamines (4,4′-oxydianiline (4,4′-ODA) and m -phenylenediamine ( m -PDA)) via two-step procedure and chemical imidization. CoPEIs showed T g s from 222 to 256 °C and T d5% s from 486 to 505 °C in argon, good mechanical properties (tensile moduli of 2.5–2.9 GPa, tensile strengths of 69–96 MPa, and elongations at break of 3.3–6.3%), and good solubility. With the introduction of 3-substituted phthalimide unit, CoPEIs displayed higher T g values, lower elongations, better solubility and larger d -spacings. The rheological properties of thermoplastic polyimide resins based on the Mixed-BPADA were investigated. CoPEI-b series displayed good melt processibility, and the CoPEI-3b derived from Mixed-BPADA 3 and m -PDA had the lowest melt viscosity among the copolymers . Compared to isomeric PEIs derived from BPADA isomers, CoPEIs displayed lower melt viscosities, indicating that the melt processibility had been greatly improved.
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高影响因子
Nanomaterials
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2022
·Vol. 12
·期 8
·1382
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IF 5.719
Qi Zeng,Chu-Ya Wang,Bo-Xing Xu,Jianyu Han,Xin Fang,Guangcan Zhu
Bismuth oxybromide (BiOBr), with its special layered structure, is known to have potential as a visible-light-driven photocatalyst. However, the rapid recombination and short lifetime of the photogenerated carriers of BiOBr restrict its photocatalytic efficiency for the degradation of organic pollutants. Given the similar ionic size of Ce and Bi, Ce atoms might be easily introduced into the crystal of BiOBr to tailor its band structure. In this study, Ce doped BiOBr (Ce-BiOBr) samples with different percentages of Ce contents were prepared via a hydrothermal method. The intrinsic photocatalytic efficiency of Ce0.2-BiOBr for the degradation of bisphenol A (BPA) was 3.66 times higher than that of pristine BiOBr under visible light irradiation. The mechanism of Ce-doping modification for the enhanced photocatalytic performance was demonstrated based on a series of experiments and DFT calculation. The narrowed bandgap, the enhanced charge separation efficiency and Ce-doping energy level contributed to the remarkable photocatalytic performance of Ce-BiOBr.Keywords:bismuth oxybromide (BiOBr);Ce-doping modification;doping energy level;visible light;bisphenol A (BPA)
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PubMed
高影响因子
APPLIED CLAY SCIENCE
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2022
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IF 5.907
Wenyu Zhang,Xin Yan,ZhiliangLiu,Chunfang Du
Copper oxide/ halloysite nanotubes (CuO/HNTs) served as excellent catalysts for bisphenol A (BPA) removal were prepared through a hydrothermal method . The influences of catalyst dosage, peroxymonosulfate (PMS) concentration, pH value, initial BPA concentration, temperature, inorganic anions, and humic acid on the degradation efficiency were investigated. The degradation results indicated that the catalyst 70% CuO/HNTs (70% represented the weight ratio of CuO to HNTs) displayed an extraordinary TOC removal efficiency of 96%, which was 1.2 times higher than that of CuO. The mechanism studies suggested that the abundant hydroxyl groups of HNTs mostly contributed to the superior degradation efficiency of CuO/HNTs. The singlet oxygen ( 1 O 2 ) produced in the CuO/HNTs/PMS system acted as the predominant active specie in the degradation process . Moreover, the formed Cu-O-Al bond constrained the growth of CuO and improved the cycle performance of CuO/HNTs. This work provides an efficient catalyst for contaminant removal and contributes an innovative strategy for constructing functional mineral composites with abundant hydroxyl groups.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2022
·Vol. 414
·期 17
·4897-4907
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IF 4.478
Yang Zhenglun,Chen Yihui,Jia Jianggang,Hou Chunyan,Xuan Rongrong,Wang Tingting
In the current study, the C18-modified halloysite was fabricated via silylation reaction and subsequently used as sorbent in matrix solid-phase dispersion (MSPD) for the extraction of bisphenol A and diethylstilbestrol from human placenta, followed by high-performance liquid chromatography-tandem mass spectrometry analysis. The as-prepared sorbent was characterized by scanning electron microscopy, energy-dispersive spectrometry, Fourier transform infrared spectroscopy, X-ray diffraction, and thermo-gravimetric analysis. Varied parameters such as methanol concentration in wash solvent, pH and salt concentration in elution solvent, elution volume, and mass ratio of sample to sorbent were optimized. The adsorption capacities of bisphenol A and diethylstilbestrol on the developed C18-modified halloysite were 6.3 and 14.2 mg g −1 , respectively, higher than those on the commercial C18 silica gel. Under the optimal condition, the average recoveries of bisphenol A and diethylstilbestrol by MSPD varied from 91.0 to 106.0%, and the relative standard deviations were less than 10.6% for human placenta samples. The limits of detection in the human placenta were 0.2 μg kg −1 for bisphenol A and diethylstilbestrol. The simple C18-modified halloysite-based MSPD method holds great potential for the determination of trace bisphenol A and diethylstilbestrol in the human placenta and other tissues of pregnant women with high sensitivity, accuracy, and reliability. Graphical abstract
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Li Chen,Tahir Maqbool,Ghazanfar Nazir,Congyu Hou,Yulong Yang,Jianning Guo,Xihui Zhang
Endocrine disrupting compounds (EDCs) in the aquatic systems are of growing concerns that could undermine drinking water safety. In this study, manganese (III) oxide (Mn 2 O 3 ) based catalytic ceramic membrane (CCM) was developed for the activation of peroxymonosulfate (PMS), and its applicability has been tested in degrading the ten different EDCs (including bisphenol analogs (BPs)) in drinking water. The CCMs were synthesized at different calcination temperatures i.e., 850, 950, and 1150 °C. Optimal performance of CCMs/PMS was achieved at a higher degree of calcination. The CCMs/PMS has shown a potential to effectively degrade the EDCs at higher concentrations (mg/L) to trace levels (ng/L). The CCMs/PMS system adopted a non-radical pathway of degrading the EDCs through the extensive generation of singlet oxygen ( 1 O 2 ), as confirmed using quenching experiments and electron paramagnetic resonance (EPR) spectroscopy. 1 O 2 -based oxidation process showed special selectivity for the decontamination of phenols and bisphenols. The long-term performance of CCMs/PMS showed good stability in degradation of the EDCs in drinking water, also with efficient mineralization (TOC removal >55%) and negligible release of Mn (0.004 wt%Mn/min). CCMs/PMS system also showed high potential in improving water quality by reducing the disinfection byproducts (DBPs) formation potential, highest recorded for bromodichloromethane (CHCl 2 Br, 100%) and lowest for dichloroacetic acids (TCAA, ∼50%). The study provided a highly efficient catalytic ceramic membrane based advanced oxidation process (AOPs) for effective degradation multiple of EDCs in drinking water, and the findings of this work can be a baseline for full-scale water treatment applications.
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DESALINATION
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2022
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IF 11.211
Shiqiang Liang,Jinghui Wu,Chi Wang,Xiaoxuan Zhao,Chuang Wang,Xia Yang,Hongliang Huo,Tong Wang,Zhi Geng,Xianze Wang
The emerging self-supporting symmetric membrane has shown great promise in the field of forward osmosis (FO) separation due to the elimination of internal concentration polarization (ICP). The selective permeability and mechanical properties of membrane materials are the keys to determining the comprehensive properties of such ultra-thin membranes. In this study, a series of carboxylated poly (aryl ether sulfone) (PAES-COOH) materials were designed and synthesized for the fabrication of high performance self-supporting symmetric FO membranes. Owing to the superior character of polymer materials and the introduction of hydrophilic charged carboxylic groups in their molecular structure, these prepared self-supporting symmetric FO membranes with a thickness of ~2.5 μm exhibited excellent mechanical robustness and outstanding permselectivity , so that they could maintain structural integrity and show a high water/salt selectivity in the process of long-term forward osmosis separation. The series of fabricated PAES-COOH membranes displayed the Young's modulus surpass 1.76 GPa, the tensile strength exceed 72.6 MPa, and the elongation at break overtop 70.2%. Additionally, the optimal PAES-COOH-80 membrane sample demonstrated a remarkable H 2 O/Na 2 SO 4 selectivity of 1673.8 L mol −1 . This study provides an effective strategy for conveniently fabricating high-performance self-supporting symmetric FO membrane.
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高影响因子
ANALYTICAL LETTERS
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2022
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IF 2.267
Caifen Chen,Dan Li,Baokang Jin
A selective, sensitive electrochemical biosensor is reported to determine bisphenol A (2,2-bis(4-hydroxyphenyl) propane, BPA) based on target-induced chain release. A gold electrode was premodified with dendritic gold nanoparticles (AuNPs) by direct electrochemical deposition to increase the active surface area of the electrode to immobilize hydrosulfonyl group-containing capture DNA (C-DNA). C-DNA was hybridized with a BPA-specific aptamer (T-DNA) to form a double helical structure. After the embedding of methylene blue (MB), this structure emitted measurable electrochemical signals. BPA specifically binds to T-DNA to form a stable BPA G-tetrad structure, thereby inducing the release of the aptamer chain and the embedded MB from the surface into solution, resulting in the reduction of the current signal. The constructed electrochemical biosensor provided a linear response to BPA concentration from 1.0 × 10−9 M to 5.0 × 10−7 M with a detection limit of 9.8 × 10−10 M. This strategy also provided good selectivity for BPA compared to similar interferents.
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高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2022
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IF 10.753
Xiao-Qiu Lin,Jia-Mei You,Ling-Yu Meng,Naoko Yoshida,Jing-Long Han,Cong-Ju Li,Ai-Jie Wang,Zhi-Ling Li
Tetrabromobisphenol A (TBBPA), a hazardous and persistent flame retardant , has been widely detected in the natural aquatic system. The acceleration of reductive debromination (rate-limiting process) is vital during the decomposition and detoxification of TBBPA. This study achieved superior TBBPA electrochemical reductive debromination performance by nano Pd doped Ni foam electrode (4.8 times higher than Ni foam electrode). The optimal TBBPA reductive debromination performance was obtained under −1.2 V of cathode potential, 1.2 wt% of Pd loading, 10 mg L −1 of TBBPA and 100 mM of Na 2 SO 4 as the electrolyte solution. UPLC-QTOF-MS verified that Br atoms in TBBPA were removed sequentially to form bisphenol A as the major product. Most TBBPA was reductively debrominated by atomic H* through indirect hydrodebromination, evidenced by the atomic H* quenching test. The higher solution conductivity and appropriate TBBPA concentration would contribute to the debromination efficiency. Excessive H 2 generation whether by over negative potential or H atom richness electrolyte largely disturbed the reaction process and restricted the debromination. The improved generation of reductant (H*) ads Pd was the most significant, while excessive Pd loading would make aggregation and limit the debromination efficiency. The study confirmed the optimization strategies of conditions for Pd/Ni foam electrode and revealed the related function mechanism for stimulating TBBPA electrochemical reduction, giving suggestions for the efficient removal of TBBPA in the aquatic environment.
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PubMed
高影响因子
RADIATION PHYSICS AND CHEMISTRY
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2022
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IF 2.776
Yan Wu,Xue-Qi Zhang,Xiao-Jing Guo,Ling-Hui Kong,Rong-Fang Shen,Jiang-Tao Hu,Xi Yan,Yan Chen,Wan-Zhong Lang
Herein, a convenient and environment-friendly grafting strategy was used to anchor beta-cyclodextrin (β-CD) on polypropylene (PP) fabric, which includes grafting of GMA onto PP nonwoven fabric via 60 Co γ-ray and introduction of β-CD by the ring-opening reaction between the hydroxyl group of β-CD and the epoxy group of GMA. The as-prepared fabric composite (PP-g-GMA-βCD) showed a bisphenol A (BPA) adsorption amount of 27.72 mg/g in the single BPA solution (75 ppm). The BPA adsorption amount by PP-g-GMA-βCD was not sensitive to pH condition, and the anti-interference ability to ions was also strong. The Langmuir isotherm model was found to be suitable for the adsorption of BPA, and the entire adsorption process followed the pseudo-second-order kinetics. PP-g-GMA-βCD showed excellent stability and reusability that the BPA adsorption amount remained almost unchanged after 10 successive recycles. In the BPA and methyl orange (MO) mixed solution (BPA: 75 ppm; MO: 50 ppm), the adsorption amounts of BPA and MO by PP-g-GMA-βCD were 23.88 and 20.83 mg/g, respectively. The presence of MO resulted in a little decrease in the adsorption amount of BPA, as β-CD can also form host–guest complexes with MO, and there would also be π-π and H-bond interactions between BPA and MO.
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高影响因子
危险品化学品经营许可证（带存储）