Environmental Science-Nano
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2023
·Vol. 10
·期 5
·1284-1296
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IF 7.3
Yuxuan Lin,Weihua Qin,Yuwei Lu,Mingye Ren,Pan Gao,Feng Xiao,Shaoxia Yang
Improving the performance of single-atom catalysts (SACs) is still challenging in Fenton-like reactions for degrading refractory organic pollutants. Here, we designed P and N co-doped Fe SACs to regulate the electronic structure of Fe active sites and enhance the reaction kinetics of peroxymonosulfate (PMS) activation. The obtained heteroatom-doped Fe SACs for the first time exhibited an ultra-low activation energy (ca. 3.7 kJ mol−1) and excellent degradation efficiency for bisphenol A (BPA) in a wide pH range (4.3–9.2). The superior reaction kinetics of the Fe SACs were attributed to enriching the electron density of atomic Fe and then forming dual electron-rich/-deficient sites, which accelerated the electron transformation to generate reactive oxygen species (ROS). In this study the heteroatom-doped Fe SACs with rapid reaction kinetics are achieved, and provides an idea to design SACs with superior performance in heterogeneous Fenton-like reactions.
研究领域:
环境科学
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催化
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化学工程
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材料科学
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高影响因子
Nature Communications
·
2017
·Vol. 8
·期 1
·1-13
·
IF 12.124
Zhang Zhaobin,Hu Ying,Guo Jilong,Yu Tong,Sun Libei,Xiao Xuan,Zhu Desheng,Nakanishi Tsuyoshi,Hiromori Youhei,Li Junyu,Fan Xiaolin,Wan Yi,Cheng Siyu,Li Jun,Guo Xuan,Hu Jianying
Bisphenol A (BPA) is used in the production of plastic but has oestrogenic activity. Therefore, BPA substitutes, such as fluorene-9-bisphenol (BHPF), have been introduced for the production of so-called ‘BPA-free’ plastics. Here we show that BHPF is released from commercial ‘BPA-free’ plastic bottles into drinking water and has anti-oestrogenic effects in mice. We demonstrate that BHPF has anti-oestrogenic activity in vitro and, in an uterotrophic assay in mice, induces low uterine weight, atrophic endometria and causes adverse pregnancy outcomes, even at doses lower than those of BPA for which no observed adverse effect have been reported. Female mice given water containing BHPF released from plastic bottles, have detectable levels of BHPF in serum, low uterine weights and show decreased expressions of oestrogen-responsive genes. We also detect BHPF in the plasma of 7/100 individuals, who regularly drink water from plastic bottles. Our data suggest that BPA substitutes should be tested for anti-oestrogenic activity and call for further study of the toxicological effects of BHPF on human health.
研究领域:
环境科学
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毒理学
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生殖生物学
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PubMed
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.
研究领域:
环境科学
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催化
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材料科学
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化学工程
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DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Xiaohan Zhou,Bo Li,Yujia Liu,Yuyu Zhang,Lishuai Song,Nan Liu,Zequan Li
Using melamine-cyanuric acid (MCA) supramolecular polymer as a precursor, a method was employed to synthesize graphitic carbon nitride with a large specific surface area and controllable band structure . The band structure and morphology of graphitic carbon nitride (g-C 3 N 4 ) are closely related to the type of solvent used. By treating it with hypophosphorous acid and subsequent high-temperature treatment for 10 h , the precursor material was calcined to produce graphitic carbon nitride with a hollow tubular morphology. Experimental results demonstrate that this material exhibits outstanding performance in photocatalytic degradation of Rhodamine B and Bisphenol A. This work provides a new and effective strategy for achieving visible-light photocatalytic degradation of organic compounds.
研究领域:
材料科学
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环境科学
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化学
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高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
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IF 4.4
Mengxia Ji,Zhen Tao,Tiange Wei,Yifan Shao,Qing Xu,Jinman Yang,Jiexiang Xia,Huaming Li
A direct Z -scheme heterojunction was constructed between carbon nitride and BiOBr 0.5 I 0.5 ultrathin nanosheets. • The optimized composite achieved 84% BPA removal efficiency under visible light irradiation within 40 min. • The internal electric field at the heterointerface drives a direct Z-scheme charge transfer pathway. • The h + , •O 2 − , and •OH were identified as dominant active species via ESR and scavenging experiments. • Enhanced spatial carrier separation and preserved redox ability synergistically boost photocatalytic degradation activity. Bismuth oxyhalide-based solid solutions have excellent visible light absorption and oxidation capabilities, but limited charge separation efficiency hinders their applications. In this study, a Z-scheme heterojunction involved ultrathin polymeric carbon nitride (CN) and BiOBr 0.5 I 0.5 solid solution (BOBI) nanosheets was synthesized for BPA photodegradation. The well-matched energy bands and work function difference between CN and BOBI promote efficient separation and transfer of photogenerated carriers. Meanwhile, CN/BOBI retains the strong reduction capacity of CN and the strong oxidation capacity of BOBI, which is conducive to the generation of more reactive oxygen species (ROS, •OH and •O 2 − ) and holes. Based on these advantages, CN/BOBI exhibits excellent bisphenol A (BPA) removal performance. The optimized CN/BOBI-2 composite achieves an 84% BPA removal efficiency under visible light irradiation. This work establishes a scalable strategy for modulating solid solution photocatalysts via heterojunction engineering, which can be applied to sustainable environmental remediation. Download: Download high-res image (213KB) Download: Download full-size image
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高影响因子
Catalysts
·
2025
·Vol. 15
·期 8
·788
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IF 4
Jingjing Liu,Guilong Gao,Lu Gan
Herein, carbon nanofiber (CNF) was prepared by pyrolyzing electrospun cellulose nanofiber, which was further used to incorporate with graphitic carbon nitride (g-C3N4) to prepare metal-free photocatalyst (CNF/g-C3N4). CNF/g-C3N4was then used to degrade bisphenol A (BPA) under visible light with the assistance of peroxymonosulfate (PMS). It was illustrated from the results that CNF with conjugated aromatic structure could significantly enhance the light absorption range and capability. At the existence of PMS, 0.5 g/L of CNF/g-C3N4could efficiently degrade 0.05 mM of BPA within 45 min with a high total organic carbon removal rate of >70% under visible light. It was found that the reaction system could generate various reactive oxygen species (ROSs) including hydroxyl radical, superoxide radical and singlet oxygen for BPA degradation. Due to the existence of these species, the reaction system exhibited high performance adaptability towards abundant water matrices and high stability under consecutive runs. This work prospects a new strategy to develop a high-performance advanced oxidation system for quick organic pollutant degradation and mineralization.
研究领域:
环境催化
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材料科学
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光化学
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水处理技术
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纳米材料
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高级氧化工艺
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高影响因子
Journal of Water Process Engineering
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2025
·
IF 6.7
Danni Deng,Rong Chen,Qianqian Zhong,Binbin Xiong,Jia Deng,Na Zhang,Shiwei Xie
Bicarbonate ions (HCO 3 − ), commonly present in natural water sources, exert complex influences on peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs). This study investigates the role of HCO 3 − in a novel electrochemical system using a stainless-steel scrubber cathode (SSSC) for PMS activation. The buffering effect of HCO 3 − shifts the dominant Fe(II) species from dissolved Fe 2+ ions to surface-bound Fe(II) (≡Fe(II)) within the HCO 3 − /PMS/SSSC system. Furthermore, HCO 3 − promotes ≡Fe(II)/≡Fe(III) redox cycling on the SSSC surface. These synergistic effects significantly enhance PMS activation, generating singlet oxygen ( 1 O 2 ) and Fe IV O as the primary oxidants responsible for BPA degradation. Identification of degradation intermediates elucidated two dominant pathways: hydroxylation and radical coupling. Toxicity assessment of these intermediates confirmed reduced environmental risks. The SSSC exhibited long-term stability and effective performance in real water matrices, demonstrating its practical applicability.
研究领域:
环境科学
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电化学
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水处理
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高级氧化技术
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材料科学
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DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2025
·
IF 7.8
Yuan Chen,Dongdong Jia,Yu Gao,Wang Yuan,Yongyue Sun
To develop an efficient bifunctional material for bisphenol A (BPA) removal, a nitrogen-rich hierarchical porous Cu x @N-CM composite was synthesized by pyrolyzing Cu@ZIF-8 encapsulated with dicyandiamide (DCD). DCD introduced more pyridinic N, graphitic N, and Cu-N x active sites, and enhanced the material’s surface area and pore size. This unique structure endows the material with both superior adsorption capacity and peroxymonosulfate (PMS) activation ability, enabling efficient BPA removal from water. Specifically, after adsorption enrichment, 0.1 g L −1 of Cu x @N-CM can remove 75 % of BPA (20 mg L −1 ). Subsequent addition of 0.1 mmol L −1 PMS achieves complete BPA removal within 15 min. Furthermore, this material and process effectively minimize PMS consumption, exhibit a broad pH application range, and good cycling stability. Mechanistic studies show that adsorption occurs through pore filling, hydrophobic interactions, π-π electron donor-acceptor (EDA) interactions, and complexation. PMS activation is driven by radical and non-radical synergies. In addition, the adsorption active sites and PMS activation sites do not overlap, and the adsorption process prolongs the residence time of pollutants on the catalyst surface, thereby promoting the degradation process. This study provides valuable insights into designing catalysts for removing high-concentration, refractory organic pollutants from water.
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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水处理技术
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催化
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
·
IF 10.588
Jiafu Li,Jiahui He,Md. Tareq Aziz,Xiaocui Song,Ying Zhang,Zhiguang Niu
As a well known endocrine-disrupting and model chemical, bisphenol A (BPA) may pose a serious threat to human health, since it and its disinfection by-products (DBPs) have been detected in drinking water , urine, human colostrum, adipose tissue , and placenta samples. Although chlorinated BPAs (Cl-BPAs) and iodinated BPAs (I-BPAs) have been well studied, brominated BPAs (Br-BPAs), and mixed halogenated DBPs like bromo-iodo-BPAs (Br-I-BPAs), and bromo-chloro-iodo-BPAs (Cl-Br-I-BPAs) are less well understood. Notably, the role of iodide (I - ) during chlorination is not well understood, since the studies of the I-DBPs mainly focus on their genotoxicity and cytotoxicity. To understand the formation mechanisms of halogenated bisphenol A (HBPs) during chlorination with bromide (Br - ) and/or I - , and the role of I - during chlorination, three set of reactions were performed in the laboratory (“BPA + chlorine + Br - ”, “BPA + chlorine + I - ” and “BPA + chlorine + Br - +I - ” assigned as group A, B and C respectively). Thirty HBPs were identified and 18 of them were never reported before. I - increases the transformation rate of BPA into HBPs as I-BPAs act as intermediate HBPs during chlorination that easily react with HClO/ClO - and HBrO/BrO - to form Cl-BPAs and Br-BPAs. HIO/IO - showed higher reactivity towards BPA and HBPs than that of HBrO/BrO - and HClO/ClO - . The recycling of I - was observed in the reactions of “BPA + chlorine + I - ” and “BPA + chlorine + Br - +I - ”, which may explain why I - can induce BPA to transform into HBPs and suggests that I - may act as a catalyst during the BPA chlorination reactions. The reaction pathways are proposed which present the reactions of BPA and HBPs with HClO/ClO - , HBrO/BrO - , and HIO/IO - , as well as the recycling of I - . This study describes the potential DBP formation and transformation mechanisms of BPA and its 16 alternatives, as well as the role of I - on the transformation of phenol compounds during chlorination.
研究领域:
环境科学
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化学
·
公共卫生
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Tian-Yu Liu,Cong Wang,Yong-Zhe Han,Chang Bai,Hai-Tao Ren,Yong Liu,Xu Han
Bi 2+x WO 6 are a group of reactive photocatalysts in the photooxidation of various contaminants. However, their catalytic reactivity in the persulfate (PS)-based oxidation processes in the absence of light is still unknown. In this study, Bi 2.15 WO 6 shows a high reactivity in the catalytic oxidation of bisphenol A (BPA) by PS in the absence of light under alkaline conditions, and 20 mg L -1 BPA can be rapidly removed within 30 min at pH 10.0 with the low stoichiometry ratio of 1.79 between consumed PS and removed BPA. Characterizations of the oxidation products indicate that 98.4% of soluble BPA has been oxidatively polymerized to BPA polymers, instead of being oxidized to CO 2 and H 2 O. FTIR, Raman, XPS and electrochemical analyses confirm that surface Bi(III) is the reactive site for the adsorption of BPA and PS, which then initiates reactions between BPA and PS. DFT calculations reveal that the O-O bond in PS is moderately activated via the nonradical pathway after adsorbing on Bi(III), instead of being decomposed to SO 4 •− , followed by H-abstraction from BPA by the activated PS with the formation of phenoxyl radicals and the subsequent polymerization to BPA polymers. The apparently lower energy barrier from adsorbed BPA (Δ G = 0.056 eV) than that from dissolved BPA (Δ G = 0.263 eV) further reveals that H-abstraction from adsorbed BPA to the activated PS on the surface of Bi 2.15 WO 6 is more favorable than that from dissolved BPA. This study gives new insight on the efficient removal of recalcitrant contaminants via the H-abstraction pathway.
研究领域:
环境科学
·
化学工程
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高影响因子
AQUATIC TOXICOLOGY
·
2022
·
IF 5.202
Long Zhu,Yongjing Guan,Xuening Li,Xiaofan Xiong,Jialin Liu,Zaizhao Wang
Bisphenol-A (BPA) has been reported to disrupt blood-testis barrier (BTB) integrity in mammals. However, its effects on fish testis sertoli cell (SC) barrier and the underlying mechanisms have been largely unknown to date. To study the SC barrier toxicity induced by BPA, male rare minnows ( Gobiocypris rarus ) were exposed to 15 μg L − 1 BPA for 7, 14 and 21 d. Meanwhile, a 25 ng L −1 17α-ethynyl estradiol (EE2) group was set up as the positive control. Results showed that BPA induced immune response in the testes and decreased offspring hatching rate. The biotin tracer assay showed that BPA exposure destroyed the integrity of the testis SC barrier. In addition, BPA exposure decreased the expressions of occludin, ZO-1, CX43 and N-cadherin proteins. The transcripts of CX43 and occludin were significantly decreased and SP1 recruitment in each gene promoter was repressed after BPA exposure. Moreover, the cytokines (TNFα and IL-1β) were significantly increased while the JNK signal pathway was activated after BPA exposure. BPA also increased the matrix metalloproteinases 1 (MMP1) and MMP2 levels in the testes. In addition, estrogenic effect did not entirely explain the mechanism by which BPA disrupted the SC barrier in G. rarus testes. These results suggested that BPA disrupted the SC barrier integrity by inhibiting SP1 enrichments within CX43 and occludin 5′ flanking regions through activated cytokines/JNK signaling pathway. MMPs were also involved in the disruption of SC barrier caused by BPA exposure.
研究领域:
环境毒理学
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生殖生物学
·
水生毒理学
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DOI
PubMed
高影响因子
FOOD AND CHEMICAL TOXICOLOGY
·
2023
·
IF 4.3
Xin Xie,Yan Zhu,Huimin Cheng,Haili Li,Yadi Zhang,Rong Wang,Wenyong Li,Fengrui Wu
Long-term exposure to bisphenol A (BPA) in humans may promote ovarian cancer development. In present study, the mechanisms by which BPA mediates the aggression metastatic behavior of ovarian cancer were investigated in vitro/in vivo . The results showed that BPA (10 μM) significantly promoted the proliferation, migration and invasion of human ovarian cancer cells (ES-2 and OVCAR-3 cells); moreover, it promoted ES-2 and OVCAR-3 cell glucose uptake, lactic acid release and intracellular ATP synthesis. After administration of 5 μg/kg/day BPA, tumor volume was increased compared with that in control group. KEGG and GO enrichment analyses showed that the genes from ES-2 cell in 10 μM BPA-treated group were enriched mainly in central carbon metabolism and PI3K-AKT signaling pathway. Then, qRT‒PCR and western blotting results showed that BPA (10 μM) increased the mRNA and protein expression levels of glycolysis-related genes and mTOR, p-AKT HIF-1α and ERα in vitro/vivo ; whereas this effect was reduced after treatment with the ERα inhibitor methyl-piperidino-pyrazole. Furthermore, coimmunoprecipitation and mass spectrometry showed that BPA promoted the direct interaction of ERα with lactate dehydrogenase A. These results show that BPA directly promoted the proliferation, migration and invasion of ovarian cancer cells through the ERα/AKT/mTOR/HIF-1α signaling axis to enhance glycolysis.
研究领域:
肿瘤学
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分子生物学
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细胞生物学
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DOI
PubMed
高影响因子
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