JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Li-Hong Huang,Li-Ping Liu,Fu-Gang Chen,Yuan-Shu Hui
This article has been retracted: please see Elsevier Policy on Article Withdrawal ( http://www.elsevier.com/locate/withdrawalpolicy ). This article has been retracted at the request of the Editor-in-Chief. In investigating concerns brought up regarding the authenticity of the article, the editors reached out to the corresponding author for an explanation. The corresponding author failed to provide a satisfactory explanation. The editors therefore feel that the findings of the manuscript cannot be relied upon and that the article needs to be retracted.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2019
·Vol. 26
·期 9
·8902-8913
·
IF 2.914
Sun Chen,Chen Tong,Huang Qunxing,Wang Jun,Lu Shengyong,Yan Jianhua
Novel KMnO 4 -treated magnetic biochar (FMBC) was successfully synthesized by addition of Fe(NO 3 ) 3 during carbonization and KMnO 4 treatment following for Pb(II) and Cd(II) adsorption. SEM-EDS, XPS, and ICP-AES were used to evaluate the FMBC and magnetic biochar (FBC) on surface morphology, surface chemistry characteristics, surface functional groups, and Pb(II) and Cd(II) adsorption behavior. Results showed that the Langmuir maximum adsorption quantity of FMBC reached 148 mg/g for Pb(II) and 79 mg/g for Cd(II), nearly 7 times of that of FBC. The enhancement of FMBC for heavy metal adsorption was due to the successful load of manganese oxides and the increased oxygen functional groups consistent with XPS and FTIR results. The adsorption capacities of FMBC were maintained over 95% when the pH value was higher than 2.5 and 3.5 for Pb(II) and Cd(II), respectively. The adsorption performances of both heavy metals by FMBC were hardly influenced by ionic strength and humid acid. The adsorption capacities of FMBC could maintain over 50% and 87% after four cycles for Pb(II) and Cd(II), respectively. The saturation magnetization of FMBC was about 11.5 emu/g, which did not change after adsorption. This work proposed a new method to fabricate a magnetic biochar with high adsorption capacities of heavy metals Pb(II) and Cd(II).
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高影响因子
JOURNAL OF SOILS AND SEDIMENTS
·
2021
·Vol. 21
·期 2
·775-783
·
IF 3.308
Du Huihui,Du Jingwei,Liu Fangyi,Zhang Yanhuan,Guo Hanwen,Wan Dan
Purpose Antibiotics often coexist with heavy metals in contaminated soils, making their behaviors more complicated than their individual presences. Sorption to soil components deeply affects the mobility, bioavailability, and fate of contaminants. However, limited studies have investigated the cosorption characteristics of tetracycline (TC) and heavy metals to typical soil minerals, particularly phyllosilicates. Materials and methods This study investigates the effect of Cd(II) on TC sorption by kaolinite (Kao, 1:1-type) and montmorillonite (Mont, 2:1-type) via isothermal adsorption, coupled with X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). Results and discussion Isothermal results show that TC sorption on both kaolinite (Kao, 1:1-type) and montmorillonite (Mont, 2:1-type) is little affected by Cd(II) at pH 4.5 but increases significantly at pH 8.5. The overall effect of Cd(II) on TC sorption depends on the intensities of two positive processes, i.e., (1) the formation of soluble Cd-TC complex increases sorption compared to free TC molecules and (2) the formation of a ternary clay-Cd-TC complex at clay variable edge sites increases sorption, and one negative process, i.e., competition of Cd(II) with cationic and zwitterionic TC species at the permanently charged sites decreases sorption. XRD analyses demonstrate that TC intercalates into the interlayer ( d 001 = 18.7 Å) of Mont as one monolayer parallel molecule both with and without Cd(II) but adsorbs predominately on external surface of Kao. FTIR results suggest a flat-lying horizontal configuration of adsorbed TC molecules on clays, accompanied by a strong complexation between the carbonyl and amino groups of TC molecules and the surfaces. Besides, the presence of Cd(II) more or less facilitates this complexation. Conclusions We propose that Cd(II) can significantly promote TC adsorption on clay minerals at alkaline pH rather than acidic pH. TC and Cd(II) interact intensely and form strong surface complexation on clay surfaces. Hence, coexistence with Cd(II) may lower the mobility and thus the bioavailability of TC in alkaline soils, which provides a new direction for soil remediation by regulating soil pH using alkaline materials. Graphical abstract
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高影响因子
POLYMER
·
2017
·
IF 3.684
Jia-Min Li,Chuan-Shan Hu,Jian-Ming Shao,Hui-Juan Li,Peng-Yun Li,Xi-Chuan Li,Wei-Dong He
Ternary hydrogels composed of poly[acrylamide- co -2-(dimethylamino)ethyl methacrylate] [P(AM- co -DMAEMA)], poly(vinyl alcohol) (PVA) and β -cyclodextrin ( β -CD) were fabricated based on the multiple physical interactions such as inclusion complexation, hydrogen bonding and polymer crystallinity , and exhibited high storage modulus . To illustrate the individual role of each physical interaction, symmetrical investigation has been performed. P(AM- co -DMAEMA)s with two compositions , prepared by radical polymerization at −20 °C below the freezing point of reaction medium of water, were served as the inclusion guest for the inclusion host of β -CD. The inclusion complex between dimethylaminoethyl group of DMAEMA and β -CD was identified through 2D NOESY NMR spectroscopy . Hydrogen bonding between each pairs of hydrogel components was confirmed with FTIR analysis and contributed the second form of crosslinkage. Under freezing polymerization and further freezing-thawing treatment, PVA component tended to crystallize to serve as the third type of physical crosslinkage, which was recognized with X-ray diffraction. Rheological and thermo-gravimetrical analysis was used to inspect the modulus and thermal stability of the hydrogels, respectively. Three hydrogels of P(AM- co -DMAEMA)/PVA-g- β -CD, P(AM- co -DMAEMA)/PVA/ β -CD and P(AM- co -DMAEMA)/PVA were synthesized under the same condition to make the comparison. The whole results disclosed the strong dependence of hydrogel properties on the hydrogel components, reflecting the synergistic effects of different physical crosslinkages for the formation of those physical hydrogels.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yingying Wang,Fuyu Zhang,Mengshuo Du,Bihe Chen,Yifeng Xu,Wenzhi Tang,Zhonghong Li
Highly toxic Pb(Ⅱ) and Cd(Ⅱ) persist in water and soil, disrupting ecosystems while threatening human health through bioaccumulation. Metal-organic frameworks (MOFs) as adsorbents toward heavy metal ions have garnered significant research attention. However, their adsorption capacity and retrieval are limited by small pore size and powder form. Herein, we designed a defective MIP-202 composite aerogel (DMCA) to efficiently remove Pb(Ⅱ) and Cd(Ⅱ). Mixed ligand (mercaptosuccinic acid) and modulator (butyric acid) were involved in the synthesis of MIP-202, and competed with the original amino acid ligand for binding to Zr clusters leading to the disruption of the original structure of MIP-202 and defect formation. Defective MIP-202 (D-MIP-202) possessed larger BET surface area (from 35.79 to 129.57 m 2 /g) and pore size (from 6.16 to 11.78 nm). Moreover, D-MIP-202 powder and sodium alginate were synthesized into DMCA with abundant adsorption sites and porous structures to enhance the sorption capacities, which were 434.7 mg/g (Pb(II)) and 202.6 mg/g (Cd(II)). The adsorption process primarily occurs on the heterogeneous surface of the material and represents a spontaneous chemisorption behavior. The adsorption mechanism is attributed to chelation, and ion exchange. This study presents an effective strategy for the remediation of heavy metal ions in aqueous systems.
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产品关联
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高影响因子
IEEE TRANSACTIONS ON ELECTRON DEVICES
·
2023
·Vol. 70
·期 11
·5751-5756
·
IF 3.1
Yibo Ma,Xiaodong Zhang,Haiyu Qiu,Jing Guo,Chuan Tian,Liqiang Zheng,Chong Shen
At present, great success has been achieved in the development of perovskite light-emitting devices (LEDs) with red, green, blue, and near-infrared emission. However, red perovskite LEDs, as a key optoelectronic device, are still challenging, principally because under high bias voltage, halide separation will inevitably occur in mixed halide perovskite, resulting in unwanted color changes of the device. In addition, the poor stability and inherent toxicity of traditional lead halide perovskite limit its practical application. Here, the manufacturing of stable red LEDs based on ternary manganese halide CsMnBr3 is reported, which solves the problems of color instability and lead toxicity faced by perovskite red LEDs. The quantum efficiency is effectively improved by Cd $^{{2}+}$ ion doping. Photoluminescence (PL) quantum yield (PLQY) reaches 73.1% and has long-term stability. It can be stored at room temperature in air for more than 300 days. In addition, the red electroluminescent LEDs prepared with Cd:CsMnBr3 nanocrystals (NCs) has the broadband emission of self-trapping excitons centered at 660 nm and a comparable and reasonable low carrier valid mass conducive to charge transmission. The maximum brightness of the prepared red LEDs is 46.2 cd/ $\text{m}^{{2}}$ , showing a long half-life of 90 min at 25 °C, which is due to the excellent heat resistance, moisture resistance and high temperature resistance of Cd:CsMnBr3, as well as oxidation under environmental conditions. The results show that the broadband and stable emission of Cd:CsMnBr3 is compatible with the practical application of LEDs.
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高影响因子
WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 235
·期 1
·1-20
·
IF 3.8
Liu Bangwei,Zhou Yan,Zhang Yiwei,Chen Dandan,Liu Wenhui,Lu Ping,Su Xiaoyu,Xia Tian
A zero-valent iron-loaded corn straw char (ZVI-CSC) was synthesized in this study for the remediation of As(V) and Cd(II) contamination. The impact of ZVI-CSC on the adsorption performance of As(V) and Cd(II) in solution, as well as their migration properties in soil, was investigated through adsorption kinetics and soil column leaching experiments, respectively. The results showed that the adsorption capacity of As(V) by ZVI-CSC was significantly improved to 14.42 g·kg −1 at pH = 3, compared with unmodified corn straw char (CSC). However, the adsorption capacity of Cd(II) was not improved. In the leaching experiments, the addition of ZVI-CSC to As(V)-contaminated soil resulted in a significant reduction of cumulative As(V) release rate from 32.26 to 3.11%, compared with corn straw char (CSC). Moreover, the role of ZVI in As(V)/Cd(II) remediation was analyzed. nZVI forms ≡Fe-OH and ≡Fe-OOH due to oxidation, which can form monodentate and bidentate complexes with As(V) via ligand exchange, thus promoting As immobilization. Furthermore, to further improve the adsorption performance of Cd(II), the electrostatic potential (ESP) of biochars with different surface functional groups (C = O, C–O–C, –OH, and –COOH) and their bond dissociation enthalpy (BDE) with As(V) and Cd(II) were calculated based on density functional theory (DFT). The results showed that –OH was the most effective for As(V) adsorption, and C–O–C was the most effective for Cd(II) adsorption. C = O and –COOH can be used to the simultaneous adsorption of As(V) and Cd(II). Therefore, the surface functional groups of ZVI-CSC can be selectively modified to improve its adsorption performance of As(V) and Cd(II). Graphical
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高影响因子
WOOD SCIENCE AND TECHNOLOGY
·
2013
·Vol. 48
·期 1
·195-206
·
IF 1.884
Wang Ting,Si Hongyan,Li Bin
Poplar wood flour, a low-cost and abundantly available material, was modified by grafting β - cyclodextrin in the presence of citric acid, aiming to expand the application of wood flour. The product was characterized by Fourier transform infrared spectroscopy and the technique of the phenolphthalein probe. By the technique of inverse gas chromatography and the method of Hamieh, the values of surface free energy and nonpolar part of the free energy were obtained. The results demonstrate that the dispersive component of the surface free energy of the products will increase with temperature increases, and the product presents a Lewis basic character with K
b / K
a = 3.67. Based on the structure of the product, the basicity comes from two parts. One is the rich electronic environment of the β - CD inner cavity, and the other is the formation of ester bonds through crosslinking between β - CD and wood flour by CA.
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高影响因子
Applied Water Science
·
2026
·Vol. 16
·期 9
·250
·
IF 5.7
Eltaweil Abdelazeem S.,Alzain Rania,Fawzy Manal,El-Monaem Eman M. Abd,Elmaghrabi Nourhan
Antibiotic pollution poses significant ecological and human health risks in aquatic environments, making their removal an urgent environmental challenge. This study presents the development of an eco-friendly and efficient adsorbent fabricated from Hyphaene thebaica plant biochar along with Zeolitic imidazolate framework and Beta-cyclodextrin (ZIF-67/BC-β-CD). The fabricated ZIF-67/BC-β-CD nanocomposite demonstrates remarkable mechanical, thermal, and chemical stability as confirmed via different characterization techniques, including Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, zeta potential, and X-ray photoelectron spectroscopy. To examine the adsorption ability and optimize the performance of ZIF-67/BC-β-CD nanocomposite, a series of adsorption experiments of tetracycline (TC) were conducted. Results revealed that the maximum adsorption capacity of ZIF-67/BC-β-CD nanocomposite for TC is 294.11 mg.g − 1 at 25 ℃ and pH 5. The findings clarified that the process followed a pseudo-second-order kinetics model with a good fit to the Freundlich isotherm, rather than the Langmuir isotherm, suggesting a combination of physical and chemical adsorption. The adsorption of TC onto ZIF-67/BC-β-CD was found to be governed by a combination of physisorption (electrostatic, hydrophobic, and π–π interactions) and chemisorption (hydrogen bonding and n–π electron donor–acceptor interactions). Furthermore, the adsorbent demonstrated significant regeneration potential after five successive cycles, proving its potential to be used as a sustainable and efficient adsorbent for treating water contaminated with antibiotics.
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高影响因子
Food Analytical Methods
·
2026
·Vol. 19
·期 6
·186
·
IF 3
Pang Jing,Meng Fangyuhe,Song Yiyun,Yu Hongmei,Chen Guosong,Liu Chang
A two-dimensional imine-linked covalent organic framework, designated as COF-LZU1, was employed as a high-performance solid-phase extraction (SPE) adsorbent for the preconcentration of trace Cd(II) from complex food matrices. Systematic investigations of adsorption kinetics and isotherms revealed that Cd(II) uptake follows a pseudo-second-order model and aligns with the Langmuir isotherm, indicating a monolayer chemisorption process. The theoretical maximum adsorption capacity reached 114.94 mg g −1 , demonstrating highly competitive performance against traditional adsorbents. Structural and spectroscopic characterizations (SEM–EDS, BET, FT-IR, XPS, and XRD) before and after adsorption confirmed that the robust performance of COF-LZU1 originates from its high specific surface area and abundant nucleophilic imine linkages (-C = N-), which serve as primary coordination sites. Supported by the Hard and Soft Acids and Bases and density functional theory simulations, the adsorption mechanism involves a synergistic interplay of electrostatic attraction, chelation, and the channel effect. Under optimized conditions, the integrated SPE-GFAAS platform achieved a highly sensitive limit of detection (3.34 ng L −1 ) and excellent precision (RSD = 1.0%). The methodology was validated using certified reference materials and real food samples, yielding excellent recoveries (94.0–104.0%). These findings underscore the significant potential of COFs-LZU1 as specialized scaffolds for the robust enrichment and quantification of trace heavy metals in food safety applications. Graphical A novel two-dimensional imine-linked covalent organic framework, designated as COF-LZU1, was initially employed in a solid-phase extraction system to adsorb trace amounts of Cd(II) from food samples. The adsorption process is identified as a sophisticated multi-step mechanism: initially, Cd(II) ions are attracted to the vicinity of the nitrogen-rich binding sites via electrostatic forces; subsequently, they migrate into the interior pores through the channel effect and are ultimately anchored via strong coordination-chelation with the imine linkages. This study underscores the potential of COF-LZU1 as a high-performance and selective platform for the separation and detection of Cd(II) in complex food matrices.
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高影响因子
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
·
2026
·
IF 4.4
Xiaofei Yang,Mingyue Qiao,Yan Deng,Songsong Chen,Cheng Li,Yuanke Shu,Li Jiang
Heavy metal pollution, particularly copper (Cu) and cadmium (Cd), poses a serious threat to aquatic ecosystems due to its toxicity and bioaccumulation potential. This study investigated the effects of individual and combined exposure to Cu and Cd on largemouth bass, focusing on the gut–liver axis and the TLR4/NF-κB pathway in hepatotoxicity. A total of 480 size-matched fish were randomly assigned to four groups (Control, Cu, Cd, and Cu + Cd) and exposed to sublethal concentrations of CuSO₄ (9.275 mg/L) and CdCl₂·2.5H₂O (1.15285 mg/L) for 14 days, followed by physiological, molecular, and omics analyses. Results showed that both single and combined exposures disrupted intestinal structure and barrier function, accompanied by downregulation of tight junction genes. Oxidative stress responses were tissue-specific, with increased reactive oxygen species (ROS) and MDA levels in the intestine but decreased levels in the liver, along with suppressed antioxidant enzyme activities. Inflammatory responses were activated, as indicated by elevated cytokine levels and upregulation of TLR4/MyD88/NF-κB signaling in the liver. Microbiota analysis revealed that Cd exposure increased gut microbial diversity, whereas Cu + Cd co-exposure reduced α-diversity and altered microbial composition, with increased Proteobacteria and decreased beneficial taxa such as Bacteroidota and Firmicutes. Untargeted metabolomics showed that hepatic metabolic profiles were altered, mainly affecting lipid, energy, and immune-related pathways. Overall, combined Cu + Cd exposure exerted stronger toxic effects than single exposures, inducing more severe intestinal damage, microbial dysbiosis, and metabolic disturbances. These findings highlight the critical role of the gut–liver axis in mediating heavy metal toxicity.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Yinshuang Shao,Huipeng Zhao,Ji Wang,Xiaoshuang Zhang,Xiaoqiang Du
Electrocatalytic seawater splitting for generating H 2 has become one of the most promising methods. This study prepared M-NiSe/Ni 3 Se 2 (M = Co, Fe, Cd) electrocatalysts through a one-step hydrothermal selenification reaction. In alkaline seawater, the Co–NiSe/Ni 3 Se 2 electrode requires overpotentials of 273, 369, and 431 mV to drive current densities of 10, 50, and 100 mA cm −2 for oxygen evolution reaction (OER) process, respectively. Moreover, the Co–NiSe/Ni 3 Se 2 electrocatalyst needs only potential of 1.395 V to drive a current density of 10 mA cm −2 in the urea oxidation reaction (UOR) process. According to density functional theory result, the synergistic effect between the large H 2 O adsorption capacity of Co–NiSe and the superior electrical conductivity of Ni 3 Se 2 is a key factor for contributing to the superior performance of the Co–NiSe/Ni 3 Se 2 catalyst. This study conducted systematic doping comparison experiments on the NiSe/Ni 3 Se 2 system, providing authentic and reliable experimental support for the design of selenide electrocatalysts.
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高影响因子
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