ENVIRONMENTAL TOXICOLOGY
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2013
·Vol. 29
·期 12
·1460-1470
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IF 2.708
Mingbao Feng,Ruijuan Qu,Ying Li,Zhongbo Wei,Zunyao Wang
Hexabromobenzene (HBB) is a novel brominated flame retardant (BFR) with ample evidence of its ubiquitous existence in the aquatic ecosystems. However, to date, the toxicological effects of this BFR on fish have been inadequately researched. The present study was conducted, based on an in vivo model, to investigate HBB-induced biochemical changes in liver and gill tissues of Carassius auratus after medium-term exposure to different concentrations (10, 150, and 300 mg/kg) for 7, 14, and 25 days. Oxidative stress was evoked evidently for the prolonged exposure, demonstrated by significant inhibition in antioxidant enzymes activities including superoxide dismutase, catalase, glutathione reductase, glutathione peroxidase, and glutathione S-transferase, and a decrease in reduced glutathione level, as well as simultaneous elevation in malondialdehyde content. Moreover, Na + , K + -ATPase activity, and protein level were remarkably reduced in fish tissues. Based on the integrated biomarker response, the toxic potency in each treatment was distinguished, and the more severe stress was mainly noted with the increasing concentrations and the extending durations. It was also observed that liver exhibited more pronounced alterations in biochemical parameters than gill, probably indicating the vulnerability of liver to HBB-triggered oxidative stress. Taken together, the results of this study clearly showed that HBB was capable of inducing oxidative stress and inhibiting Na + , K + -ATPase activity in different tissues of C. auratus after medium-term exposure. © 2013 Wiley Periodicals, Inc. Environ Toxicol 29: 1460–1470, 2014.
研究领域:
环境毒理学
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水生生态学
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生物化学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
·
IF 8.3
Meijuan Ding,Mei Li,Yijun Wang,Ziyu Li
Metal oxides have excellent photocatalytic properties. In this work, LDHs are used as precursors to prepare metal oxides (Cu 0.04 Zn 0.47 Co 2.49 O 4 ). Synthesis of graphdiyne (GDY) by mechanochemical method using calcium carbide as raw material. It is complexed with Cu 0.04 Zn 0.47 Co 2.49 O 4 to explore the hydrogen evolution performance of the composite catalyst CZC (Cu 0.04 Zn 0.47 Co 2.49 O 4 )/G (GDY) in water splitting under visible light and its possible hydrogen evolution mechanism. The results show that the composite catalyst CZC/G-11 has good hydrogen evolution activity, and its photocatalytic hydrogen evolution activity could reach up to 17.7 μmol h −1 at pH = 9. The four hydrogen evolution cycle stability tests show that CZC/G-11 maintains a relatively smooth level of hydrogen evolution. The photoelectrochemical and fluorescence test results show that the incorporation of GDY can effectively improve the charge separation efficiency of the composite catalyst CZC/G-11. Both CZC and GDY are n-type semiconductors, as shown by the Mott-Schottky test results. The catalysts are also tested by UPS and the energy band structure is analyzed, with conduction band values of −0.54 V and −0.58 V and valence band values of 1.41 V and 0.83 V for CZC and GDY, respectively. Combined with the electron transfer direction of each catalyst, the possible mechanism of photocatalytic hydrogen evolution between CZC and GDY is analyzed, and it is speculated that Z-scheme heterojunction is formed between CZC and GDY to promote the hydrogen evolution reaction.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Fan Li,Lei Lei,Yuxi Zhou,Xiaochen Wang,Yindan Zhang,Jianghuan Hua,Jian Han,Lihua Yang,Bingsheng Zhou
The novel brominated flame retardants (NBFRs) have received wide concerns due to their ubiquitous occurrence in the environment and their potential risks to ecosystems and human health. However, the toxicity data of NBFRs are still lacking, especially their toxicity comparison data, and toxicity predictions for untested NBFRs are extremely limited. In this study, eight commonly used NBFRs and decabromodiphenyl ether (BDE209) were selected to compare their toxicity at concentrations between 0.03 and 3.69 μM, by exposing zebrafish embryos until 120 h post-fertilization (hpf) and evaluating 18 toxicity indicators including basic development indicators and a series of behavioral indicators. The toxicity potency of the tested compounds ranked by the total number of significantly affected endpoints were pentabromobenzene (PBB) ≈ 2,4,6-tribromophenol (TBP) > BDE209 ≈ bis(2-ethylhexyl) tetrabromophthalate (TBPH) > pentabromotoluene (PBT) ≈ 2-ethylhexyl-2,3,4,5-tetrabromobenzoate (EHTBB) > 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE) > hexabromobenzene (HBB) > decabromodiphenyl ethane (DBDPE). Almost all the tested compounds affected the locomotor behavior of zebrafish larvae, suggesting that the refined behavioral indicators were sensitive endpoints. Furthermore, the quantitative structure-activity relationship (QSAR) model we developed suggested that molecular surface area (MSA) might be the critical factor for determining the developmental neurotoxicity of NBFRs to zebrafish larvae, except for congeners with larger molecules (e.g. DBDPE, BTBPE). These findings would contribute to elucidating the toxicity differences among various NBFRs and provide important references for their toxicity prediction.
研究领域:
环境科学
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毒理学
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计算生物学
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PubMed
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2025
·Vol. 27
·期 8
·4278-4289
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IF 2.9
Ziyu Li,Mei Li,Rongsheng Xu,Zhiliang Jin
The electron transfer rate in photocatalysts is one of the factors determining their hydrogen production activity. In this work, NH2-MIL-88B(Fe) (NFM) was synthesized using a one-step hydrothermal synthesis method and NFM/GDY-25 (NFMG-25) was successfully synthesized by loading graphdiyne (GDY) onto the surface of NFM. The hydrogen production performance and the mechanism of the prepared photocatalysts were systematically investigated using XRD, SEM, FT-IR, XPS, UV-Vis, PL and photoelectrochemical tests. The results showed that the hydrogen production of NFMG-25 reached 61.7 μmol in 5 hours. Photoelectrochemical and Mott–Schottky tests demonstrated that the composite catalyst exhibited high photogenerated carrier separation efficiency and single catalysts were n-type semiconductors. The conduction bands of NFM and GDY were −0.36 V and −0.56 V, respectively, while the valence bands were 1.90 V and 1.12 V. NFM acted as an electron acceptor and donor, which accelerated the transfer of the electrons, and enhanced the photocatalytic hydrogen production efficiency of the composite system. This study provides an effective method for using NFM in photocatalytic hydrogen production.
研究领域:
材料科学
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能源科学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Shizhe Liu,Yang Liu,Yi Ren,Menghao Kong,Tianfang Yang,Shilong Li,Pinghao Cui,Xinxin Jia,Liyuan Wang,Shuyan Gao
Dual-regulation via sp-N and Co nanoparticles optimizes the Co d-band center. • Operando SERS reveals rapid interfacial *OOH conversion for efficient 4e − ORR. • CoNP/Co@sp-N breaks the inherent ORR activity-stability trade-off effectively. • Catalyst yields 0.89 V E 1/2 and enables Zn-air batteries with >240 h stability. Single-atom catalysts have drawn massive interest for their ability to electrocatalyze the oxygen reduction reaction (ORR), primarily attributed to their ultimate atom economy and structurally distinct active centers. Nevertheless, simultaneously achieving robust durability and exceptional catalytic efficiency persists as a critical bottleneck. Herein we develop a graphyne-based composite material (CoNP/Co@sp-N) composite wherein sp-hybridized nitrogen (sp-N) anchored Co single atoms are synergistically coupled with adjacent cobalt nanoparticles. Density functional theory (DFT) reveals that while strong sp-N coordination provides robust atomic anchoring, the sp-N/nanoparticle electronic synergy precisely optimizes the Co d-band center to achieve near-ideal OOH binding, effectively decoupling the inherent ORR activity-stability trade-off. The unique coordination environment provides formidable orbital hybridization for unyielding atomic anchoring while the nanoparticle-induced electronic modulation optimizes the adsorption free energy of OOH intermediates. This synergistic integration bypasses the traditional compromise by simultaneously enhancing electrocatalytic efficiency and preserving operational stability. Notably, the CoNP/Co@sp-N composite delivers outstanding oxygen reduction performance, achieving a half-wave potential of 0.89 V, and exhibits zero efficiency loss following 5000 continuous cycles. Moreover, when incorporated into a functional zinc-air battery, this catalyst attained a peak power density of 187.33 mW cm −2 and exhibited remarkable cycling stability surpassing 240 h, thereby underscoring its significant potential for extensive energy conversion applications. A dual-regulation strategy breaks the oxygen reduction activity-stability trade-off via a graphyne-based CoNP/Co@sp-N composite. Strong sp-hybridized nitrogen coordination ensures robust atomic anchoring, while adjacent cobalt nanoparticles electronically modulate the Co single atoms to optimize OOH binding. This synergistic architecture drives highly efficient and durable O 2 -to-H 2 O conversion for advanced zinc-air batteries. Download: Download high-res image (173KB) Download: Download full-size image
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高影响因子
MICROCHEMICAL JOURNAL
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2025
·
IF 5.1
Shenghao Zhang,Meiling Zhang,Yinhao Zhang,Yingxia Zong,Xu Hun
Here, we designed a catalytic DNA assembly (CDA) amplification strategy to construct a photoelectrochemical (PEC) assay to detect the specific target F3L-gene of Monkeypox Virus (MPXV). Graphdiyne (GDY) and CuSe were synthesized by a surface-assisted deprotection/polymerization method and hydrothermal method, respectively. Then AuNPs and GDY/CuSe nanocomposites were modified on the surface of gold electrode (GE). The hairpin DNA4 (H4) was incubated onto the surface of the electrode by Au-S bond. When the target was present, the CDA was occurred by hairpin DNA1 (H1) and hairpin DNA2 (H2). Then, DNA3 (H3) hybridized with the single stranded region of H1-H2 complex, formed a site that can be hydrolyzed by exonuclease III, led to exonuclease III hydrolysis of DNA and to release the H3 primer (H3P). H3 further opened H4 and triggered a subsequent CDA reaction, ultimately formed a Y-shaped DNA structure on the electrode surface with the help of DNA5 (H5) and DNA6 (H6). The two end sequences of H4 and H6, which constituted the Y-shaped structure, were designed as split H3P fragments. They can be used as primers to trigger CDA reactions for more efficient and characteristic autocatalytic signal amplification. The Y-shaped structure carried H5-ALP, and catalyzed phosphonoxyphenol ( o -PP) to generate benzene-1,2-diol (CA), which could enhance the PEC signal. The linear range is 0.1 fM-10.0 pM with the detection limit of 0.05 fM (3S/N) for MPXV.
研究领域:
生物医学
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分子诊断
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纳米材料科学
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DOI
高影响因子
Journal of Environmental Sciences
·
2017
·
IF 2.865
Yingjie Li,Wenfeng Li,Qingnan Liu,Hong Meng,Yingzhou Lu,Chunxi Li
For the first time, a series of alkynyl carbon materials (ACMs) were prepared via the mechanochemical reaction of CaC 2 with six polyhalogenated precursors, namely CCl 4 , C 2 Cl 6 , C 2 Cl 4 , C 6 Cl 6 , C 6 Br 6 , and C 14 H 4 Br 10 (ACM-1, ACM-2, ACM-3, ACM-4, ACM-5, and ACM-6, respectively) and used for the adsorptive removal of mercury from aqueous solutions. Based on preliminary investigations, the adsorption of mercury on ACM-5 was studied in depth. Specifically, the effect of pH on mercury adsorptivity , adsorption kinetics, thermodynamics, isotherms, and recyclability was studied. The adsorptivity of mercury on ACMs was found to be closely related to the hydrocarbon precursor, specific surface area of sorbent , and the alkynyl content. ACM-5 showed the best performance and is among the best raw carbonaceous sorbents reported so far, with a Langmuir saturated adsorption capacity of 191.9 mg g − 1 . The promising mercury adsorption performance mainly arises from the strong Lewis soft acid–soft base interactions between the alkynyl groups and mercury ions. The adsorption isotherms could be satisfactorily correlated with the Langmuir equation. The results show that the ACMs can be used as efficient sorbents for the removal of mercury and may also be useful for the adsorption of other heavy metals.
研究领域:
环境科学
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材料科学
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Meng He,Xin Zhu,Yehui Ding,Lianjun Wang,Yuxing Luo,Xiangdong Ding,Xue Liu
Sulfur hexafluoride (SF 6 ) is a widely used insulating gas and a greenhouse gas which requires efficient recycling to minimize its environmental impact. Conventional membrane materials, such as zeolites, polymers, and metal-organic frameworks (MOFs), often suffer from harsh fabrication conditions or insufficient selectivity/permeability. In this work, we present a facile strategy for fabricating a noncovalently bonded polyaromatic hydrocarbon (PAH) monolayer membrane for efficient N 2 /SF 6 separation. The PAH monolayer with a thickness of 1.35 nm was prepared via Langmuir Schaefer (LS) method by using hexa(terpyridine) hexaphenylbenzene (HTPHPB) on air-water interface. Strong π-π stacking interaction between HTPHPB molecules stabilizes the monolayer, while the resulting intermolecular transient nanopores enable selective SF₆ separation from N₂. The resulting 4 layers of HTPHPB membrane, assembled at 25 mN·m −1 , exhibits exceptional SF 6 /N 2 separation performance with a selectivity of 155 ± 4 and a N 2 permeance of 136 ± 4 GPU, overcoming the inherent trade-off between selectivity and permeability in traditional organic membranes. Notably, the membrane maintains its separation performance even under bending, demonstrating excellent mechanical flexibility. This study offers a tunable and scalable organic membrane design strategy, paving the way for industrial applications in SF 6 recovery and gas separation.
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高影响因子
Solar RRL
·
2024
·
IF 6
Meijuan Ding,Mei Li,Jingzhi Wang,Zhiliang Jin
Herein, the application of graphdiyne (GDY) in photocatalytic splitting of water and hydrogen evolution is explored. In this article, GDY is prepared by ball milling using calcium carbide as raw material, and it is compounded with phosphating Mo–metal-organic frameworks (MOFs), to explore the photocatalytic hydrogen evolution performance and hydrogen evolution mechanism of composite catalysts. In the results, it is shown that the P–Mo–MOFs (PMF)/G-25 composite photocatalyst has the best hydrogen evolution activity, and the hydrogen evolution rate is highest at pH = 9, reaching 1668.5 μmol g −1 h −1 . Through the four-cycle hydrogen evolution cycle stability test, the PMF/G-25 composites still has good hydrogen evolution stability. It is shown that the combination of phosphating Mo–MOFs and GDY can enhance the hydrogen evolution activity and has excellent hydrogen evolution performance. In the Mott–Schottky test, it is found that PMF and GDY are n-type semiconductors. The conduction and valence values are −0.56 and 1.10 eV for GDY, and −0.68 and 0.97 eV for PMF, respectively. The mechanism of photocatalytic hydrogen evolution is analyzed, and it is speculated that S-Scheme heterojunction is formed between PMF and GDY to further promote photocatalytic hydrogen evolution.
研究领域:
材料科学
·
催化化学
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DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2024
·
IF 4.8
Shuning Yu,Chengyu Huangfu,Yulin Li,Anni Yang,Qinglei Xing,Yue Wu,Xianghai Guo,Jiafei Lyu
With the growing demand for sustainable energy, developing new technologies based on biomass has caused deep interest. Glucose conversion into fructose is a crucial step in the sustainable biorefinery industry. Metal–organic frameworks with abundant active metal centers have shown potential, but their specific contribution is not yet fully understood. In this study, mesoporous Zr-NU-1008 with hexanuclear clusters (M 6 ) exhibited a higher glucose conversion of 54.7 % with a fructose selectivity of 85.3 % under optimized conditions compared with its hafnium counterpart, highlighting the significance of strong Lewis acidity of metal species. By adjusting the amount of the capped formate on the hexanuclear zirconium (IV) cluster (Zr 6 ) of Zr-NU-1008, a positive correlation with the catalytic activity was realized, suggesting the lability of the capping modulator during catalysis, which enables tuning the activity by manipulating the capping modulator. Further saturating the Zr 6 cluster with the electron-withdrawing trifluoroacetate modulator achieved an excellent glucose conversion of 63.3 % with a superior fructose selectivity of 86.0 %. Besides, the recovered catalyst can be easily regenerated by reinstalling the modulator on the M 6 cluster, restoring its catalytic activity.
研究领域:
化学工程
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催化
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可持续能源
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生物质转化
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DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 42
·15422-15432
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IF 4.39
Dong Qiu,Chengli He,Yuxuan Lu,Qiaodan Li,Yang Chen,Xiaoli Cui
Photoelectrochemical water splitting is an excellent strategy for hydrogen generation and it is pivotal to the development of photoanodes with sufficient sunlight harvesting, rapid charge separation, and enhanced electron injection efficiency. In this work, we rationally constructed a γ-graphyne/TiO2 (GY/TiO2) p–n heterojunction in which p-type γ-graphyne nanosheets were distributed in the three-dimensional space surrounding TiO2 nanotube arrays. The GY/TiO2 photoanode achieves a photocurrent density of 0.75 mA cm−2 at 1.23 V (vs. RHE), 1.7 times that of bare TiO2, and extends the electron lifetime of TiO2 from 0.51 to 1.16 ms. The improvement arises from moderate γ-graphyne modification, contributing to broadened light absorption, the suppressed recombination of electron–hole pairs, an increase in charge transfer, and a higher injection efficiency of surface electrons. This work provides a reliable approach for the utilization and conversion of sustainable solar energy.
研究领域:
材料科学
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能源转换与存储
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光催化
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DOI
PubMed
高影响因子
Catalysis Science & Technology
·
2022
·Vol. 12
·期 10
·3209-3218
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IF 6.177
Meng Tian,Jing Qian,Jiawei Hou,Yadi Bai,Hai-Ying Jiang,Jingyun Ren
Free silver ions (Ag+) in the solution exhibit enhanced photocatalytic dechlorination processes of organic chloride, including 2-chlorophenol (2-CP), 2,4-dichlorophenol (2,4-DCP) and 2,4,6-trichlorophenol (2,4,6-TCP), over copper phenylacetylene (PhC2Cu) under visible light irradiation. The concentration of AgNO3 remarkably affects the dechlorination activity of PhC2Cu. With the optimal concentration of 2 mM AgNO3, PhC2Cu showed the best photocatalytic performance, and the dechlorination rate of PhC2Cu was 2.3-fold enhanced under visible light irradiation for 80 minutes. This deep mechanism study demonstrated that free Ag+ in the solution, but not the deposited Ag particles on the surface of PhC2Cu, plays the most imported role in promoting the photocatalytic dechlorination process by forming the insoluble salt of AgCl.
研究领域:
环境科学
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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
危险品化学品经营许可证（带存储）