JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2023
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IF 8.7
Dongyang Liu,Hanzhi Wang,Yue Teng,Qirui Wu,Chunming Tang,Xinxin Gao,Chaoqi Chen,Liandong Zhu
With the development of livestock industry , contaminants such as divalent zinc ions (Zn (Ⅱ)) and estrone are often simultaneously detected in livestock wastewater. Nevertheless, the combined toxicity of these two pollutants on microalgae is still unclear. Moreover, microalgae have the potential for biosorption and bioaccumulation of heavy metals and organic compounds. Thus, this study investigated the joint effects of Zn (Ⅱ) and estrone on microalgae Chlorella sorokiniana , in terms of growth, photosynthetic activity and biomolecules , as well as pollutants removal by algae. Interestingly, a low Zn (Ⅱ) concentration promoted C . sorokiniana growth and photosynthetic activity, while the high concentration experienced inhibition. As the increase of estrone concentration, chlorophyll a content increased continuously to resist the environmental stress. Concurrently, the secretion of extracellular polysaccharides and proteins by algae increased with exposure to Zn (Ⅱ) and estrone, reducing toxicity of pollutants to microalgae. Reactive oxygen species and superoxide dismutase activity increased as the increase of pollutant concentration after 96 h cultivation, but high pollutant concentrations resulted in damage of cells, as proved by increased MDA content. Additionally, C. sorokiniana displayed remarkable removal efficiency for Zn (Ⅱ) and estrone, reaching up to 86.14% and 84.96% respectively. The study provides insights into the biochemical responses of microalgae to pollutants and highlights the potential of microalgae in pollutants removal.
研究领域:
环境科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2020
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IF 2.726
Wen-bo Liu,Guan-ning Cui,Hu Wang,Dong-mei Zhang,Rui-xue Wu,Ling Li,Xia Zhang,Yu-hua Fan
Adsorption is considered as one of the eco-friendly methods to effectively remove pollutants from water environment. 1 , namely ([Zn 3 (dpcp) 2 (1,4′-bmib) 2 ] n , dpcp = 3-(3,5-dicarboxylphenoxy)-5-carboxylpyridine and 1,4′-bmib = 1,4-bis(2-methylimidazol-1-yl) butane), was synthesized under simple solvothermal method and characterized by XRD , PXRD , TGA , FTIR, BET and Zeta potential . The influence of temperature and pH of the solution and the dye initial concentration on the adsorption process of 1 was investigated using Congo red (CR) as the adsorption object. Pseudo second-order kinetics and Langmuir isotherms more accurately described the adsorption process of 1 . The maximum adsorption capacity measured in the adsorption experiment was about 262.2 mg g -1 . Thermodynamic studies showed that the entire adsorption process was spontaneous. In addition, 1 released the CR dye by a simple organic solvent (ethanol solution of NaOH) and exhibited stable and high adsorption performance over 5 cycles. The subtle hydrogen bond between 1 and the dye promotes its selective adsorption of CR.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Chen Li,Yue Jia,Xiaolong Lu,Huayan Chen
Recovery of heavy metal ions from waste water has benefits both in terms of resources reuse and environmental protection. Polymer inclusion membrane (PIM) has received increasing attention as a gentle and simple method compared to other separation techniques for the removal and recovery of heavy metal ions. The extractant and matrix are the most important components of the PIM. In this paper, a novel matrix enhanced polymer inclusion membrane (ME-PIM) system containing both octyl hydroxamic acid (OHA) and di (2-ethylhexyl) phosphoric acid (D2EHPA) as the carriers as well as poly(vinyl) chloride (PVC) and poly (vinylidene fluoride- co -chlorotrifluoroethylene) (PVDF-CTFE) as the matrix was reported. The SEM results indicate that the PVC has excellent compatibility with OHA and D2EHPA, resulting in dense ME-PIM compared to PVDF-CTFE. The effects of OHA and D2EHPA with different carrier ratios on the transport and the stability of the membrane were examined using Zn (Ⅱ) as a representative of heavy metal ions. The optimal results of this work showed that the initial mass transfer flux value of Zn (Ⅱ) was as high as 4.73 μmol/(m 2 ·s), corresponding to a permeability of 2.21 × 10 −2 m/h, using the ME-PIM composed of 61 wt.% PVC and 22 wt.% OHA + 17 wt.% D2EHPA. All these results suggest that the ME-PIM has a much higher initial mass transfer flux than those of PIMs in literatures. The addition of OHA to PIM introduced extractive functional groups into the polymer chain, forming an efficient and progressive mass transfer path with the extractant D2EHPA. Utilizing two extractants with synergistic effects, this novel ME-PIM system provides a potential advantage in promoting the mass transfer of metal ions in a PIM.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
DYES AND PIGMENTS
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2020
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IF 4.613
Jihua Wang,Wenyue Dong,Bo Gao,Dajun Liu,Qian Duan
In this paper, four organic polymers of poly [(MMA) x - co -(NPMA) y - co -(CPMA) z ] and four zinc phthalocyanine (ZnPc) polymers of poly [(MMA) x - co -(NPMA) y - co -(ZnPc) z ] have been successfully synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization, where MMA is methyl methacrylate, NPMA is 3,3-diphenyl-8-methacryloxy-3H-naphtho [2,1-b]pyran, and CPMA is 3,4-dicyanophenyl methacrylate. The components of these polymers have been fully characterized by 1 H and 13 C NMR, FT-IR, Raman, XPS, UV–Vis, and photoluminescence (PL) spectroscopy. From PL spectra, poly [(MMA) x - co -(NPMA) y - co -(ZnPc) z ] polymers display strong fluorescence quenching by the energy transfer (ET) process between NPMA and ZnPc moieties. The third-order nonlinear optical (NLO) properties of poly [(MMA) x - co -(NPMA) y - co -(ZnPc) z ] polymers have been investigated by the Z-scan technique, and poly [(MMA) 168 - co -(NPMA) 5.2 - co -(ZnPc) 1.2 ] (Q4) showed the best NLO properties owing to the much stronger ET between NP and ZnPc units. Furthermore, it is essential to obtain doped poly (methyl methacrylate) (PMMA) films for practical application. The poly [(MMA) 168 - co -(NPMA) 5.2 - co -(ZnPc) 1.2 ]/PMMA film exhibited a higher nonlinear absorption coefficient of 61 × 10 −11 m/W and a lower limiting threshold of 0.19 J/cm 2 . The significantly enhanced NLO properties of poly [(MMA) 168 - co -(NPMA) 5.2 - co -(ZnPc) 1.2 ]/PMMA film compared with solution are attributed to the weaker aggregation effect in PMMA film. This research provides a promising molecular design strategy for high performance NLO materials.
研究领域:
材料科学
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光学
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DOI
高影响因子
INORGANICA CHIMICA ACTA
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2019
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IF 2.433
Lixia Liu,Xuefang Shang,Ruiqi He,Jie Li,Yanmei Chen,Hongli Chen,Tianyun Wang
A zinc(II) complex–based selective colorimetric chemosensor for H 2 S was synthesized. The ligand and complex crystals were obtained, and the molecular structures were confirmed by single-crystal X-ray diffraction analysis in addition to electrospray ionization high resolution mass spectrometer, as well as elemental analysis . The photo-physical and recognition properties toward HS – were examined. The complex indicated the presence of HS – with an obvious color change from yellow to red, based on zinc ion displacement mechanism. However no obvious changes were observed in the presence of other anions (AcO − , H 2 PO 4 − , F − , Cl − , Br − , I − and SO 3 2− ). In addition, the chemosensor was applied to assess HeLa cell cytotoxicity. Our inorganic-reaction based sensor for HS – is simple, easily prepared and efficient. The complex has many potential chemical and analytical applications for the sensing of H 2 S.
研究领域:
化学
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生物学
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医学
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Zhong-Xuan Xu,Ya-Jia Zheng,Xiao-Ru Liu
In the presence of nitrogen heterocyclic compound 2,5-di(1 H -imidazole-1 -yl)pyridine (2,5-DIP), luminescent chiral synthons ( R )-H 3 CTA and ( S )–H 3 CTA assembled with Zn 2+ ions to obtain enantiomers [Zn(( R )-HCTA) (2,5-DIP)] n ( HU14 -R ) and [Zn(( S )-HCTA) (2,5-DIP)] n ( HU14– S )) under hydrothermal condition, respectively. Partially deprotonated ( R )-HCTA 2- anions were bridged by Zn 2+ ions to form small left-handed ( R )-HCTA-Zn chain in HU14- R , while ( S )-HCTA 2- anions and Zn 2+ ions were connected together resulting in enantiomeric right-handed chain in HU14– S . Moreover, larger left-handed ( R )-HCTA-Zn-2,5-DIP chain and right-handed ( S )-HCTA-Zn-2,5-DIP chain were found in HU14 -R and HU14– S , respectively. These helical building blocks were joined together to create a pair of 3D frameworks with dia net, which show strong fluorescent characteristic and circular dichroism response. Further tests proved that HU14 -R and HU14– S have circularly polarized light (CPL) activity and their luminescence anisotropy factors (g 1um ) at 358 nm are +0.00346 and −0.00157, respectively. Moreover, as fluorescent probes, they have high stability, reliability and interference detection rate, and detection limits are up to 2.80 × 10 −6 M for Cr 2 O 7 2− and 6.19 × 10 −6 M for MnO 4 − .
研究领域:
材料化学
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光学
✓ 已验证
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2026
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IF 6.9
Xiaolei Shi,Bailing Fan,Zilong Chen,Bing Wang,Xiangqin Yang,Jingjing Hua,Cheng Yang,Yajie Wang
Background As common toxic heavy metals, the combined pollution of Pb(II) and Zn(II) is difficult to remove simultaneously due to the competition between ions, so it is necessary to develop an efficient synergistic treatment strategy. Method The study involved synthesizing functional biochar by co-pyrolyzing DGs with RM, followed by a comprehensive evaluation of its Pb(II)/Zn(II) adsorption capabilities in aqueous environments. Significant findings Multidimensional characterization results confirmed that DGs and RM were well combined, where red mud-derived functional material, such as oxygen-containing functional groups and metallic oxides, successfully loaded onto the distillers' grains-based biochar. Further, the surface properties were also remarkably modified, such as the pore structure and specific surface area were improved, the alkalinity was increased, and magnetic properties were introduced. These modified properties were identified as crucial factors governing Pb(II)/Zn(II) adsorption efficiency. The red mud-modified biochar (RM-DC) exhibited significantly enhanced adsorption capacities for Pb(II) (294.335 mg g -1 ) and Zn(II) (41.456 mg g -1 ) at ambient temperature, representing notable improvements over the pristine biochar (185.038 and 25.038 mg g -1 , respectively). The conformity to both pseudo-second-order kinetics and the Langmuir-Freundlich isotherm model suggests that the adsorption process is characterized by chemical adsorption and multimolecular layer formation. The adsorption of both Pb(II) and Zn(II) on RM-DC was determined to be endothermic and spontaneous. Pb(II) immobilization proceeded through combined surface precipitation, complexation, ion exchange, and electrostatic attraction, while Zn(II) removal was predominantly achieved via ion exchange and electrostatic interactions. RM-DC exhibited promising adsorption capability in treating authentic acid mine drainage, highlighting its potential for practical wastewater purification. This study explores a new way to reuse the industrial bulk solid wastes and provides a highly efficient strategy for heavy metal elimination.
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2020
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IF 4.3
Xiaofeng Huang,Qiulin Deng,Huiwei Liao,Hongquan Deng,Jinlong Jiang,Lixiong Zhang,Xinjun Yao
The treatment process of metal plating wastewater in industry usually exists excessive consumption of chemicals, coproduction of sludge and complex reuse of metal. At present, some available technologies have been designed for effective removal of specific metal ions rather than entire metals ions in effluents. Herein, a novel strategy of treating waste with waste is proposed that using metal plating wastewater containing Zn(Ⅱ) to prepare 3D Luffa cylindrical (LC) / heterogeneous ZIFs (h-ZIF-8) composite (LC/h-ZIF-8) for photocatalytic degradation of organic pollutants (Nitrofurazone (NFZ), Methylene blue (MB), Rhodamine B (RhB) and Congo red (CR)) and mixed-dye wastewater. The strategy realized the efficient treatment of electroplating wastewater, expediently reuse of metal ions and removal of organic contaminants . Moreover, investigations of cycling performance indicated the photocatalytic stability and easy separation from water. Furthermore, the spectroscopy and electrochemical are employed to elaborate possible degradation mechanisms, expounding the LC/h-ZIF-8 possess lower recombination rates of carriers and transfer resistance of electron compared with ZIF-8. Therefore, the work proposes a new strategy for the efficient treatment of metal wastewater and achieves the combination of resource recovery and wastewater treatment with the advantages of simple operation and mild conditions.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2023
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IF 3.8
Min Hou,Hou Cong Li,Ning An,Si Yan Pang,Wen Ge Li,Jing Tong
Three metal complexes [Ni 2 (HL) 2 (C 2 H 5 OH) 2 Cl 2 ]·2C 2 H 5 OH (complex 1), [Co (HL) (L)] (complex 2) and [Zn 2 (HL) 2 (CH 3 COO) 2 ] (complex 3) derived from 5-bromosalicylaldehyde-2-(2-aminophenyl)benzimidazole Schiff base ligand (H 2 L) were synthesized and characterized by infrared (IR) spectroscopy, thermogravimetric (TG) analysis and powder X-ray diffraction (XRD). Single crystal X-ray diffraction analysis confirmed that complex 1 crystallized in binuclear octahedral structure with space group P2 1 /C and complex 2 displayed in mononuclear octahedral structure with space group P 121/c 1. While complex 3 produced binuclear pyramid structure with space group P 121/c 1. Herein, cobalt (Ⅱ) salt was oxidized to form Schiff base cobalt (Ⅲ) complex by coordinating three deprotonated groups. The MTT method was employed to determine the three complexes in vitro cytotoxicity effects against human lung cancer cells (A-549), liver cancer cells (SMMC-7721), breast cancer cells (MDA-MB-231) and nasopharyngeal carcinoma cells (CNE-2Z). The results showed that Co (Ⅲ) complex has significant anticancer activity against human breast cancer MDA-MB-231 cells compared with cisplatin. The further study of its anticancer mechanisms exhibited that Co (Ⅲ) complex could inhibit MDA-MB-231 cells proliferation through both apoptosis and DNA replication inhibition.
研究领域:
无机化学
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药物化学
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肿瘤学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）