CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Qiuhui Xu,Wenxiang Zhang,Quan Chi,Yuhang Yang,Xi Tan,Jikai Liu,Huaming Xiao,Xian Wang
Endocrine disrupting chemicals (EDCs) are pervasive emerging pollutants found in environmental water, stemming from their widespread use in personal consumer products. This study presents a novel magnetic Porous organic cage (POC) material, Fe 3 O 4 -COOH@CC3R-OH, which has been proven to be highly effective in eco-friendly eliminating EDCs. Featuring a tetrahedral morphology with core–shell structure, the new magnetic adsorbent boasts a substantial Brunauer-Emmett-Teller surface area of 94.02 m 2 /g and a particle pore size of 1.14 nm. Rigorous optimization of adsorption conditions for eight specific EDCs was conducted, complemented by insightful molecular docking simulations shedding light on the adsorption mechanisms. Furthermore, the developed Fe 3 O 4 -COOH@CC3R-OH magnetic solid phase extraction-assisted high performance liquid chromatography-tandem mass spectrometry (MSPE-HPLC-MS/MS) method exhibits good sensitivity and precision in the quantitative detection of EDCs in environmental water samples. This integrated approach provides a robust platform for both efficient removal and accurate detection of EDCs, advancing water quality control and safeguarding human health.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hui-Shan Meng,Shu-Zhen He,Mei-Mei Wang,Jia-Rui Xi,Jia-Tai Wen,Hong-Wei Luo,Wei-Kang Wang,Juan Xu
The activation of persulfate by heterogeneous catalysts is susceptible to background matrices present in wastewater, resulting in reduced catalytic efficiency during practical applications. Herein, a persulfate activation cell (PAC) is developed by spatially separating pollutants and persulfate into two independent chambers. The CuCoNi-NF catalyst is fabricated and utilized as the electrode of the PAC. The performance of the PAC is compared with a mixed persulfate activation system (PAM) concerning cyclic degradation of various phenolic pollutants and in the presence of different environmental matrices. The results indicate that phenol pollutants such as bisphenol A (BPA) can be degraded in the PAC via transferring electrons to persulfate. The PAC exhibits superior stability compared to the PAM during six cyclic BPA degradation experiments, with BPA degradation rate constant decreasing by 16.7% for PAC and 81.9% for PAM. Over the 192-hour continuous operation period, the PAC attains a BPA removal efficiency of 88.8 ± 5.6%, a TOC removal efficiency of 74.0 ± 4.6%., and a current output of 0.24 ± 0.04 mA. Furthermore, environmental matrices such as cations, anions, humic acid, and natural water environments demonstrate a slight enhancing effect on BPA degradation in the PAC while conversely displaying inhibition in the PAM. High solution conductivity benefits BPA degradation in the PAC by reducing internal resistance. The pH level of the environment (pH 6–9) has minimal impact on the degradation of BPA in the PAC. The pollutants begin to degrade in PAC when the anode potential reaches their oxidation potential, and the stable potential difference between the anode and cathode ensures the continuous oxidation of the pollutants. Our work proposes a novel persulfate activation strategy that can effectively degrade target pollutants by resisting environmental interferences.
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Ruli Xu,Xiaomin Qian,Zhiyuan Zhang,Fanshu Yuan,Yuqing Song,Jie Liu,Qianli Zhang,Jie Wei
A sensitive and selective carbon paste electrode (CPE) for the detection of bisphenol A (BPA) was prepared using N doped multi-walled carbon nanotubes (N-MWCNT) as the electron transport accelerator and molecularly imprinted polymer (MIP) as the recognition element of BPA. In presence of the initiator of 2, 2′-azobis(isobutyronitrile) (AIBN), BPA was imprinted using acrylonitrile as a functional monomer and ethylene glycol dimethacrylate (EGDMA) as a cross-linker. The polymers of MIP and non-molecularly imprinted polymer (NIP) were characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). Under the optimized conditions, the oxidation peak current increases linearly with the increase of BPA concentration in the range of 0.05 – 90 μmol/L (R = 0.9991), and the detection limit was 11.8 nmol/L. MIP/N-MWCNT/CPE successfully detected BPA in the elution solution of a plastic bottle.
✓ 已验证
产品关联
DOI
高影响因子
Materials Chemistry Frontiers
·
2023
·Vol. 7
·期 19
·4535-4546
·
IF 7
Qiaoqiao Ding,Mang Niu,Hong Su,Zhanyin Liu,Jianfei Gao,Yanhui Zhao,Chunlei Liu,Yuan Liu,Chunzhao Liu
Developing highly efficient catalysts to effectively activate peroxymonosulfate (PMS) is a key challenge for degrading polychlorinated phenols posing a long-term risk of toxicity to environmental water. Here, a novel surface hierarchically nanostructured Co3O4/hydrogen titanate (HTO) composite catalyst (Co3O4/HTO) was prepared using electrospinning technology followed by a low-temperature alkaline hydrothermal process. Such a structural design endows the Co-based composite catalysts with rich and efficient surface-active cobalt sites, and provides rich hydroxyl groups for the composite catalyst, both of which enhance the catalytic performance of the composite catalyst in PMS based reactions. As expected, the optimum Co3O4/HTO catalyst can efficiently catalyze PMS to produce large amounts of free radicals, enabling the degradation of 2,4-dichlorophenol (2,4-DCP) completely within a very short time period (nearly 10 min). Density functional theory calculation further demonstrated that the Co3O4/HTO catalyst helps to enrich the charge density of PMS for the easy breakdown of the O–OH bond to generate more free radicals than the single Co3O4 catalyst. By analyzing the free radicals and intermediate products generated in catalytic reactions, possible degradation mechanisms and pathways of 2,4-DCP were proposed. This work offers a new approach to design low-cost and highly active PMS activators for the purification of wastewater.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ye Yang,Fangbo Zhao,Liu Yang,Jiaming Zhang,Hee-Deung Park,Zhiguo Li,Hongxu Chen,Ximeng Zhang,Mingjin Gao
Most ultrafiltration (UF) membranes can hardly remove organic pollutants with low molecular weight, like Bisphenol A (BPA). This study effectively addressed the issue by immobilizing the GO-Ag nano-sheet catalyst within the finger-like pores of a polymer UF membrane using bottom cross-flow filtration. The catalytic membrane operated under a low pressure of 0.2 MPa and achieved a remarkable water flux of 368 L/(m 2 ·h). By filtering aqueous substrates with BPA and humic acid (HA), the UF membrane could effectively reject most of the high molecular weight HA (>90.8%). The BPA entered the membrane pores could be effectively decomposed (>99.4%) by the free radicals generated by the peroxydisulfate(PDS)/GO-Ag system. Also, the catalytic membrane exhibits significantly enhanced BPA degradation kinetics, up to 19.6 times higher than those of conventional suspension-based methods. Moreover, the GO-Ag catalytic membrane demonstrates excellent reusability, maintaining almost constant flux after multiple cycles with a flux recovery rate (FRR) of 90.1%. This is attributed to the in-situ degradation of pollutants attached to the membrane by the free radicals. In addition, it is proved that the GO-Ag catalytic membranes show significant antibacterial abilities. In summary, the GO-Ag/PES catalytic membrane offered significant advantages, such as a convenient fabrication process and the integration of membrane separation and advanced oxidation processes (AOPs) in a single step, eliminating pollutants quickly, saving catalysts and oxidants, and minimizing membrane fouling.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Linna Guo,Miao Tian,Zhi Li,Qianqian Wang,Qiuhua Wu,Lin Hao,Chun Wang
Wide use of phenylurea herbicide has caused serious residue problem and threaten human health. It is important to develop viable method for their sensitive determination. Herein, a multi-functionalized porous polymer was prepared by crosslinking hexafluorobisphenol A with pyromellitic dianhydride. Using the multi-functionalized porous polymer as solid phase extraction sorbent, combined with high performance liquid chromatography, a sensitive method was established for determining phenylurea herbicides in beverages and celtuces. High sensitivity was achieved, with method detection limit (S/N = 3) of 0.01–––0.025 ng mL −1 for beverages, 1.70 ng g −1 for celtuce, and quantitation limits of 0.03–––0.10 ng mL −1 for beverages, 5.00 ng g −1 for celtuce. The method recoveries were 80.5–––120.0 % with relative standard deviations lower than 6.1%. Adsorption mechanism mainly involved F-π, F-O, π-π, polar interactions and hydrogen-bonding interactions. This study offers a simple protocol to develop multi-functional sorbents for extraction of organic pollutants.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
WATER RESEARCH
·
2023
·
IF 12.8
Zhao Song,Yu Zhang,Xue Zhang,Xu Zhou,Yidi Chen,Xiaoguang Duan,Nanqi Ren
Peracetic acid is an emerging oxidant and disinfectant for wastewater purification. In this study, we first developed a comprehensive and accurate model to elucidate the reaction mechanisms and simulate reaction kinetics of peracetic acid (PAA, CH 3 C(=O)OOH) activated by chloride (Cl – ) based on experimental results and literature. A diversity of experiments methods (e.g., quenching experiments, probe compounds degradation, electron paramagnetic resonance (EPR) measurements) and kinetic modeling were used to determine the reactive species. As a result, carbon-centered radicals and free chlorine reactive species (Cl 2 and HClO) were devoted to BPA degradation in the PAA/Cl − system. The carbon-centered radicals CH 3 C(=O)OO • , CH 3 C(=O)O • , CH 3 OO • , and • CH 3 greatly accelerated BPA degradation with their corresponding kinetics of k CH 3 C(=O)OO•, BPA = 2 × 10 8 M − 1 s −1 , k CH 3C(= O)O• , BPA = 2 × 10 7 M − 1 s −1 , k •CH 3 , BPA = 2 × 10 6 M − 1 s −1 and k CH 3 OO•, BPA = 2 × 10 4 M − 1 s −1 . Dissolved Cl 2 (l) species was also important for BPA degradation with k Cl 2 , BPA of 2 × 10 7 M − 1 s −1 , much higher than HClO/ClO − of k HClO, BPA = 1.2 × 10 1 M − 1 s −1 and k ClO − , BPA = 9 × 10 −3 M − 1 s −1 . While free chlorine tends to transform BPA to estrogenic chlorinated organic products, the primary degradation of BPA by carbon-centered radicals results in chlorine-free products, reducing the production of disinfection byproducts during the treatment of saline wastewater. This study improves the knowledge of reaction kinetics and mechanism and reactive species generation in the PAA/Cl – system.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Li Zheng,Yajing Zhu
A novel magnesium oxide and poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) composite modified carbon paste electrode (MgO-PP/CPE) has been fabricated for the sensitive quantification of bisphenol A (BPA). The modified electrode was characterized by scanning electron microscopy (SEM), chronocoulometry and electrochemical impedance spectroscopy (EIS). Compared with MgO/CPE, PP/CPE, and CPE, MgO-PP/CPE exhibited enhanced electrochemical activity toward the oxidation of BPA, which was due to the high surface area of MgO and facile electron transfer ability of PEDOT:PSS. Under the optimum conditions, the linear sweep voltammetric oxidation peak current of BPA was linear with its concentration in the ranges from 1.0 nM to 0.4 µM and 0.4 to 10 µM, with a low detection limit of 0.5 nM (3S/N). The fabricated sensor was successively applied to the quantification of BPA content in water samples.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 31
·14828-14839
·
IF 3.3
Lin Dong,Yunlan Xu,Dengjie Zhong,Nianbing Zhong,Zhuofan Han,Yi Liu,Haixing Chang
The low electron–hole separation in the photoanode generally restricts the visible light response of photocatalytic fuel cell (PFCs). In this study, 5% NH2-MIL-125/g-C3N4/Bi2O3/Ti photoanode was synthesized and assembled with a PFC with Cu cathode to degrade rhodamine B and generate electricity. With visible light irritation, the maximum photocurrent density, maximum power density, and degradation rate of the PFC were 0.59 mA cm−2, 29.88 μW cm−2, and 97.48% (1 h), respectively. The major active species in the PFC were h+, ˙O2−, and ˙OH. The good performance of the PFC was ascribed to the formation of a double Z-type heterojunction in the 5% NH2-MIL-125/g-C3N4/Bi2O3/Ti photoanode so that the photoelectrons of NH2-MIL-125 and Bi2O3 directly combine with the photoholes of g-C3N4, making the photoholes of NH2-MIL-125 and Bi2O3 and the photoelectrons of g-C3N4 directly or indirectly involved in the RhB degradation process and generating electricity. Thus, the separation rate of the e−–h+ pairs in the photoanode and the capability of the PFC are greatly improved.
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Chao Hu,Yeqing Xu,Mingmin Wang,Shixuan Cui,Hangjun Zhang,Liping Lu
Bisphenol analogues are widely used in industrial and daily-use consumer products having imperfect thyroid hormones (THs) structures. Widespread exposure interferes with thyroid-related health outcomes in human. The mechanisms of disruption on TH synthesis and subsequent thyroid dysfunction by different bisphenol analogues remain unclear. Here, we evaluated bisphenol-induced thyroid endocrine disruption in C57BL/6 mice at doses of 0.002, 0.02, 2, and 20 mg/kg body weight/day (BW/d) for five consecutive weeks. Administration of 20 mg/kg BW/d bisphenol S (BPS) and 2 mg/kg BW/d tetrabromobisphenol S (TBBPS) significantly increased serum thyrotropin (TSH) levels to 1.21-fold and 1.20-fold of control group, respectively, indicating that bisphenols induced thyroid dysfunction in mice. Height of the thyroid follicle epithelium significantly increased to 1.27-, 1.24-, 1.26-, and 1.36-fold compared to control group with BPA, BPS, TBBPA, and TBBPS at 20 mg/kg BW/d, respectively, indicating impairment of the thyroid gland structure, and TBBPS showed potent effect. Exposure to bisphenol analogues of 0.02 mg/kg BW/d downregulated the protein expression levels of thyrotropin receptor, the sodium/iodide symporter, thyroperoxidase. The TH-dependent effects were further determined using the T-Screen assay at 10 −11 M to 10 −5 M concentrations. Bisphenol analogues significantly decreased TH-dependent GH3 cell proliferation, indicating the antagonistic activity of bisphenol analogues. The gene responsible for THs synthesis of thyrotropin releasing hormone receptor and TSH were upregulated, but downregulation of thyroid receptor β was observed. Our results suggest that bisphenol analogues distinctly induce thyroid dysfunction via TH synthesis, implying adverse effect of bisphenol analogues on TH homeostasis and subsequent physiological processes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Bing Wang,RuiQing Zhang,HuiYong Chen,Zhuo Li,EnZhou Liu,HaiXia Ma,Bo Zhou,Hong Hao,LinYu Jiao
Controllable fine-tuning of heterojunction interfaces at the atomic level represents a promising strategy for enhancing semiconductor photocatalytic performance. Herien, we propose a strategy to introduce hydrogen-bonded electron channels at the heterojunction interface to achieve rapid interfacial electron transfer. This S-scheme hydrogen-bonded supramolecular self-assembled H 12 SubPcB-OPhCH 2 COOH/Ag 3 PO 4 semiconductor heterojunction exhibits efficient and stable photocatalytic degradation of a wide range of pharmaceuticals and personal care products. Experimental results and theoretical simulations demonstrate that the interface O-H⋅⋅⋅O hydrogen bond at the heterojunction generates an internal electric field, which provides the driving force for accelerated S-scheme charge transfer and enhanced redox properties. Furthermore, the combination of TDDFT calculations and synchronous illumination XPS has revealed that hydrogen bonding acts as a suction electron pump in the excited state, transferring electrons from Ag 3 PO 4 to SubPc-2. These findings suggest that hydrogen-bonded supramolecular semiconductor can be used to develop high-performance photocatalytic materials for environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ronghao Wu,Xin Hu,Yihui Li,Yongfu Li,Yanjiang Cai,Peikun Jiang,Bing Yu
Constructing bimetallic nanostructures with specific crystalline phases provides an attractive strategy to develop highly efficient catalysts and explore structure-dependent catalytic properties. Herein, a new iron-based bimetallic catalyst consisting of amorphous MnO 2 and crystalline α-Fe 2 O 3 was synthesized for peroxymonosulfate (PMS) activation, named as a-MnO 2 /α-Fe 2 O 3 . The results show that the removal efficiency of sulfamethoxazole is over 90% within 120 min by the a-MnO 2 /α-Fe 2 O 3 in the presence of PMS at broad pH conditions ranging from 3 to 9. Furthermore, a complete degradation of bisphenol A (BPA) is achieved within 2 min in the a-MnO 2 /α-Fe 2 O 3 /PMS system under optimum conditions, and the BPA degradation rate constant of 1.67 min −1 outperforms most reported Fe- and Mn- based catalysts. The results of electron paramagnetic resonance analysis, quenching tests and Raman spectroscopy analysis show that the mechanism for the a-MnO 2 /α-Fe 2 O 3 -based PMS activation is dominated by the formation of activated surface-PMS complexes. ≡Mn(Ⅳ)–OH and ≡Fe(III)–OH of a-MnO 2 /α-Fe 2 O 3 are active sites for PMS adsorption to form inner-sphere complexes (≡Mn(Ⅳ)-OOSO 3 - ) through the replacement of surface hydroxyl groups. Finally, the a-MnO 2 /α-Fe 2 O 3 exhibits a remarkable removal efficiency of over 99% for BPA in column-bed tests conducted over 600 cycles, demonstrating its immense potential for practical applications.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）