JOURNAL OF COORDINATION CHEMISTRY
·
2026
·
IF 1.6
Wen Su,Ying-Qin Wei,Jianbin Chen,Xue-Jie Tan
A novel asymmetrical bis-Schiff base, (E)-3-(((di(pyridin-2-yl)methylene)hydrazono)methyl)-1-methyl-1H-indole (3DM), incorporating both pyridine and indole units, was synthesized and structurally characterized alongside its two cadmium(II) complexes (3DMCd, p-3DMCd). Comprehensive spectroscopic characterization (elemental analysis, HRMS, NMR, fluorescence) was performed. Both cadmium(II) complexes exhibit visible fluorescence, and p-3DMCd in particular displays intense yellow emission readily observable to the naked eye, indicating its potential as a novel aggregation-induced emissive material. Cytotoxicity assays conducted against A375, A549, and HeLa cancer cell lines, as well as normal HFF-1 fibroblasts, show that the free ligand 3DM is minimally toxic, whereas both cadmium(II) complexes selectively inhibit tumor cell proliferation and display markedly lower toxicity toward normal cells relative to CdCl2. In HeLa cells specifically, both 3DMCd and p-3DMCd exhibit substantially higher cytotoxicity than CdCl2, while maintaining significantly reduced toxicity toward normal cells. These results highlight the potential role of 3DM as a detoxifying ligand and support the promise of its cadmium(II) complexes as low-toxicity, metal-based candidates for anticervical cancer therapy. Given the established significance of DNA in the mechanism of action of metal-based drugs, docking studies were conducted against a DNA target to elucidate the structural basis for the differential potencies exhibited by the three compounds.
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DOI
高影响因子
ELECTROANALYSIS
·
2019
·Vol. 31
·期 8
·1448-1457
·
IF 2.691
Fan Bai,Xinhao Zhang,Xinmei Hou,Huijuan Liu,Junhong Chen,Tao Yang
Amino-functionalized Fe 3 O 4 @carbon microspheres (NH 2 −Fe 3 O 4 @C) were prepared and the electrochemical sensor was constructed using NH 2 −Fe 3 O 4 @C modified glassy carbon electrodes (GCE) to determine toxic heavy metals in aqueous solution. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) were used to characterize the structure and phase of NH 2 −Fe 3 O 4 @C. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) results indicate that NH 2 −Fe 3 O 4 @C modified GCE possesses large active area and excellent electron transfer. Under optimized electrochemical condition, Cd(II), Pb(II) and Cu(II) were determined using NH 2 −Fe 3 O 4 @C modified GCE. The electrode through amino functionalization exhibits higher sensitivity and lower detection limit toward Cd(II) and Cu(II) due to the acid-base pairing interaction between the electron-rich −NH 2 ligand and the electron-deficient heavy metal ions. Compared with other similar results reported in the literature, the NH 2 −Fe 3 O 4 @C modified electrode exhibits wider linear response range while with comparable lower detection limit. It also exhibits excellent stability, reproducibility and anti-interference ability.
研究领域:
分析化学
·
环境科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Zhaofeng Zhai,Nan Huang,Hao Zhuang,Lusheng Liu,Bing Yang,Chun Wang,Zhigang Gai,Fengxiang Guo,Zhengjun Li,Xin Jiang
A platform for the determination of Zn(II), Cd(II), Pb(II) and Cu(II) has been proposed based on a novel diamond/graphite (D/G) nanoplatelets film electrode using differential pulse anodic stripping voltammetry method. The microstructure and the composition of the film were characterized by scanning electron microscope (SEM), atomic force microscope (AFM), Raman spectroscopy and transmission electron microscope (TEM). The D/G nanoplatelets structure with two-dimensional diamond nanoplatelet as the stem and highly conducting graphite layers as shells exhibits large specific surface and great electrical conductivity, significantly enhancing the electron transport in the electrochemical reaction. Under the optimum conditions, wide linear ranges and high sensitivity were achieved. In the typical detection process, two linear working ranges were obtained due to the incomplete anodic removal and the limits of detection (LODs) were estimated to be 1.72 μg L −1 , 0.47 μg L −1 , 4.86 μg L −1 and 0.45 μg L −1 for Zn(II), Cd(II), Pb(II) and Cu(II), respectively. The simultaneous detections also verify the superior analytical performance with linear ranges from 10 μg L −1 to 250 μg L −1 and low LODs. Herein, we present a novel diamond/graphite nanoplatelets electrode without any modification/functionalization for the sensitive detection of trace heavy metal ions .
研究领域:
分析化学
·
材料科学
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高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 13
·期 2
·1423-1440
·
IF 1.5
Ruizhuo Ouyang,Lina Xu,Haifeng Wen,Penghui Cao,Pengpeng Jia,Tian Lei,Xia Zhou,Mei Tie,Xiaolei Fu,Yuefeng Zhao,Haizhou Chang,Yuqing Miao
A novel indium doped bismuth hybrid nanofilm was prepared on a glassy carbon electrode (Bi@In/GCE) and successfully used for the simultaneous measurements of aqueous zinc (Zn(II)), cadmium (Cd(II)) and lead (Pb(II)). The Bi@In hybrid nanofilm was greatly improved in the ability of electron transfer, surface morphology as well as hydrophilicity over single Bi or In film, and exhibited well-defined and separate peaks for Zn(II), Cd(II) and Pb(II) by square wave stripping voltammetry. Analytical characteristics of the developed Bi@In/GCE were explored by comparing with single Bi and In film modified electrodes with calibration curves, which exhibited the most preferable electrochemical behaviors toward three metals as predicted. The synergistic effect of Bi and In mainly contributed to the enhanced electrochemical activity of the new electrode. In the concentration range of 0-120 µg L -1 , a good linear relationship was achieved between the peak current and the metal concentration with correlation coefficient higher than 0.995. The detection limits were calculated to be 0.52, 0.15 and 0.67 µg L -1 for Zn(II), Cd(II) and Pb(II) (S/N=3), respectively. The analysis of river sample with Bi@In/GCE was performed with satisfactory recoveries higher than 98%, suggesting that the new method is promising as a simple, sensitive and efficient approach to detect the heavy metals in water samples.
研究领域:
分析化学
·
环境监测
·
电化学传感
·
纳米材料
·
水污染检测
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DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2013
·Vol. 23
·期 6
·1492-1500
·
IF 1.174
Zhang Nan,Fan Yu-Hua,Bi Cai-Feng,Zhang Xia,Zhang Peng-Fei,Zhang Zhong-Yu,Li Xin
Three novel transition metal coordination polymers, [Ni(C 18 H 16 N 3 O 2 ) 2 ·2CH 3 OH]
n
( 1 ), [Zn(C 18 H 16 N 3 O 2 ) 2 ·4CH 3 OH]
n
( 2 ) and [Cd(C 18 H 16 N 3 O 2 ) 2 ·2CH 3 OH]
n
( 3 ) (C 18 H 16 N 3 O 2 =2-acetylpyridine- d -tryptophan) were synthesized and characterized by elemental analysis, IR, UV, 1 H NMR and X-ray diffraction single crystal analysis. The analyses of the structures indicate that all three materials crystallize in the tetragonal crystal system, space group P 4 1 2 1 2. They have similar structures; i.e., the Schiff base coordinates in its deprotonated form and behaves as a hexadentate (4N+2O) coordinated ligand to form a distorted octahedron geometry. On the other hand, as a result of the alternate arrangement of chains through N–H···O intermolecular hydrogen bonds interactions, 2-D layers are formed for the three complexes. Furthermore, the luminescent properties and thermal stabilities of the three complexes were investigated.
研究领域:
无机化学
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配位化学
·
材料化学
·
晶体工程
·
光物理化学
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DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2019
·Vol. 29
·期 6
·1874-1885
·
IF 1.637
Wang Hongpeng,Lin Yuecheng,Li Yin,Dolgormaa Anudari,Fang Hui,Guo Lin,Huang Jun,Yang Junxing
To improve the adsorption capacity of Cd(II) ions, Cd(II) ions were imprinted on the surface of aminoethyl chitosan (AECS), which was coated on Fe 3 O 4 @SiO 2 nanoparticles. A novel magnetic Cd(II) ion-imprinted polymer (Cd(II)-IIP) was synthesized, characterized, and applied to the selective separation of Cd(II) ions from aqueous solution. The adsorption–desorption properties and selectivity of Cd(II)-IIP and a non-imprinted polymer (Cd(II)-NIP) were investigated. The optimum pH and equilibrium binding time were established at pH 6.0 and 60 min, respectively. Kinetics studies demonstrated that the adsorption process proceeded according to a pseudo-first or second order model, while the adsorption isotherms agreed with the Langmuir model. The maximum adsorption capacities of Cd(II)-IIP and Cd(II)-NIP toward Cd(II) ions, as calculated by the Langmuir equation, at pH 6.0 and 25 °C were 26.1 and 6.7 mg/g, respectively. The imprinted polymer showed higher selectivity toward Cd(II) ions compared to the non-imprinted polymer. The relative selectivity factor ( β r ) values of Cd(II)/Cu(II), Cd(II)/Cr(II), and Cd(II)/Pb(II) were 3.315, 3.875, and 2.061, respectively. In addition, Cd(II) ions adsorbed on the Cd(II)-IIP adsorbent could be easily released using 0.1 M HNO 3 , thus showing good material stability and reusability. The adsorption capacity of Cd(II)-IIP was retained at 74% after undergoing six adsorption–desorption cycles.
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
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2021
·
IF 6.789
Xin Zhao,Meng Li,Fuqiang Zhai,Yanling Hou,Rui Hu
Phosphate species can complex with nuclides and heavy metals from aqueous solutions strongly. The introduction of phosphate groups onto the surface of biochar sorbents (mostly <1.0 at.% of P) is highly desired. In this study, phosphate modified hydrochars (HTBs) were prepared through the hydrothermal carbonization of bamboo sawdust with various duration (2, 12, 24 h) in the presence of phytic acid (0–70 wt%). The results showed that the addition of PA with a low concentration of 10 wt% carbonized at 2 h generated hydrogen protons to etch the pristine sawdust, inducing the granulation of surfaces and a 5.5-fold enhancement of surface area. While HTBs carbonized with increasing PA concentrations (30–70 wt%) and longer duration (12 and 24 h) presented more carbonaceous particles with rising sizes from <100 nm to 2.5 μm, which should be due to the cross-linkage of dehydrated phosphate-containing organic carbon components to the matrix, enabling the resultful surface modification (maximum of 2.1 wt% of P). The uptake of U(VI), Pb(II) and Cd(II) on HTBs was investigated given various geochemical conditions including contact time, pH, ionic strength , humic acid and temperature. HTBs could capture U(VI), Pb(II) and Cd(II) efficiently from the ideal and simulated wastewaters, and be reused well after six recycles. This work opened a new strategy for the potential of phosphate-hydrochars in the aqueous remediation.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2021
·Vol. 28
·期 23
·30312-30322
·
IF 4.223
Wang Yingya,Zhang Hanbing,Yaseen Muhammad,Tong Zhangfa,Chen Ninghua,Shi Huazhen
In order to endow alkaline Ca-bentonite (ACB) with magnetic separation ability, simultaneously obtain better magnetic stability and stronger removal capacity of heavy metal cations; magnetic alkaline Ca-bentonite/carboxymethylcellulose-chitosan film (MACB/C-C) was prepared by organic modification of magnetic alkaline Ca-bentonite (MACB) using non-toxic carboxymethylcellulose and chitosan. Textural characterization results revealed that magnetic Fe 3 O 4 nanoparticles were successfully immobilized on ACB and modified with C-C. The functionalized layer of C-C concurrently enhanced the stability of Fe 3 O 4 and removal performances of heavy metal cations. Adsorption results indicated that MACB/C-C exhibited thorough separation from aqueous solution and greater uptake ability for Pb(II) and Cd(II) (483 mg·g −1 and 123 mg·g −1 ) than the nascent MACB (335 mg·g −1 and 76 mg·g −1 ), respectively, at pH 5 and 25 °C temperature. The adsorption of Pb(II) and Cd(II) on MACB/C-C mainly occurred via surface precipitation and complexation when pH > 2. MACB/C-C could be efficiently recycled with marginal decrease in adsorption capacity. The current approach credited to the convenient operation, simplified synthesis, and high efficiency of MACB/C-C could be deemed as a promising alternative for the removal of heavy metal cations from wastewater.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Hongxiu Dai,Nan Wang,Donglei Wang,Houyi Ma,Meng Lin
An electrochemical sensor was developed for detecting heavy metal ions by using a phytic acid functionalized polypyrrole (PPy)/graphene oxide (GO) modified electrode. PPy/GO nanocomposites were synthesized by in situ chemical oxidation polymerization. The PPy/GO nanocomposites were functionalized with phytic acid (PA) molecules by electrostatic attraction. The structural features of the fabricated nanocomposites were confirmed by transmission electron microscopy (TEM), attenuated total reflection infrared (ATR-IR) spectroscopy and Raman spectroscopy. The PA/PPy/GO modified electrode exhibited high electrochemical conductivity, and produced a remarkable increase in peak current compared with the PPy/GO and PA/GO modified electrodes. The developed sensor was used for the electrochemical analysis of various trace metal ions by differential pulse voltammetry (DPV). The modified electrode demonstrated to measure Cd(II) and Pb(II) with a linear working range of 5–150 μg/L. This work demonstrated a simple, rapid and high performing electrochemical strategy for high-sensitivity detection of heavy metal ions.
研究领域:
分析化学
·
环境科学
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2019
·
IF 1.795
Yaxiao Zhang,Chao Li,Yingchun Su,Wei Mu,Xiaojun Han
Heavy metal pollution causes serious health threat to humanbeings. Herein we fabricated a novel bismuth oxycarbide (BOC) modified glassy carbon electrode (GCE) for the simultaneous detection of cadmium and lead ions using differential pulse anodic stripping voltammetry (DPASV). The main factors influencing the detection performance, such as solution pH, deposition voltage and deposition time were optimized to be 4.5, −1.3v, and 700s, respectively. The detection limits for lead ions and cadmium ions were 4.30 μg/L and 3.97 μg/L, respectively. These detection limits are both lower than 5 μg/L for cadmium ions and 10 μg/L for lead ions national standards. The BOC modified GCE exhibits good selectivity and reliability for the detection of lead ions and cadmium ions. BOC/GCE may find great potential for heavy metal ions detection in real water sample.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Lili Xiao,Biwei Wang,Li Ji,Fu Wang,Qunhui Yuan,Guangzhi Hu,Angang Dong,Wei Gan
Recently, ordered mesoporous carbon has displayed attractive performance in electrochemical catalysis and sensing, benefiting from its rich and tunable pore texture. In this work, a novel electrochemical sensor based on a three-dimensionally interconnected mesoporous graphene framework (MGF) was developed for simultaneous determination of Cd(II) and Pb(II) in aqueous solution. Attributable to the abundant three-dimensional mesopores and good electrical conductivity of MGF, as well as the synergistic effect of Nafion and in-situ plated bismuth films, a highly sensitive determination of mixed metals at a Bi/MGF-Nafion/GCE is achieved. The proposed sensor exhibits wide linear responses for Cd(II) and Pb(II), ranging from 2–70 μg L −1 and 0.5–110 μg L −1 , respectively. The detection limits are about 0.5 and 0.1 μg L −1 for Cd(II) and Pb(II), respectively, which are about 6 and 100 times lower than the drinking water standards set by the World Health Organization (WHO). Moreover, Bi/MGF-Nafion/GCE has been applied for the detection of mixed metals in real water samples. The satisfying recoveries (87.5-109.2%) and relative standard deviations (RSD, 3.7-8.6%) make the proposed electrode a promising candidate for rapid and on-site monitoring of environmental metallic pollutants.
研究领域:
环境科学
·
材料科学
·
分析化学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2015
·
IF 4.529
Chao Shan,Zhiyao Ma,Meiping Tong
Poly(1-vinylimidazole)-grafted Fe 3 O 4 @SiO 2 magnetic nanoparticles (FSPV) were developed to remove both free Cd(II) and nitrilotriacetic acid (NTA) complexed Cd(II) from water. The adsorption capacity of NTA-complexed Cd(II) (42.1 mg/g) was larger than that of free Cd(II) (24.8 mg/g). Free Cd(II) and NTA-complexed Cd(II) could be reduced from 50 μg/L to below 5 μg/L within 10 and 20 min, respectively. FSPV could effectively remove trace free and NTA-complexed Cd(II) over broad pH ranges of 5–10 and 5–11, respectively. Moreover, the presence of seven coexisting ions (up to 100 mM) including four cations (Na + , K + , Ca 2+ , and Mg 2+ ) and three anions (Cl − , NO 3 − , and SO 4 2− ) all slightly promoted the removal of both free and NTA-complexed Cd(II) onto FSPV. The removal of free Cd(II) or NTA-complexed Cd(II) was not obviously affected by the presence of Ni(II) and Co(II) (50 μg/L), humic acid (up to 3 mg/L as TOC) or alginate (up to 8 mg/L as TOC). In addition, FSPV could be regenerated with 10 mM HCl in 10 min, and the removal of both types of Cd(II) maintained above 95% in five consecutive adsorption/regeneration cycles. Therefore, FSPV could be utilized as promising adsorbent for both free and NTA-complexed Cd(II).
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）