International Journal of Electrochemical Science
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2023
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IF 1.5
Fengping Liu,Wei Huang,Zhenfa Zhang,Cuizhong Zhang,Qing Huang,Gang Xiang,Meiyan Liang,Jinyun Peng
In this work, a novel electrochemical sensor based on sulfur and nitrogen co-doped porous graphene (SNPG) is developed for the simultaneous detection of Cd 2+ and Pb 2+ by in situ plating bismuth film. The large effective surface area and doped sulfur and nitrogen in porous graphene supply active sites with high affinity toward Cd 2+ and Pb 2+ by electrostatic interaction to improve the sensor performance, and the bismuth film improves the stripping voltammetric performance by forming bismuth-metal (Cd, Pb) alloys. Under optimized conditions, this sensor exhibits linearity in the range of 0.05-2 μM for Cd 2+ and Pb 2+ with a low detection limit of 0.02 μM for Cd 2+ and 0.008 μM for Pb 2+ . Moreover, the proposed sensor was applied for the simultaneous detection of Cd 2+ and Pb 2+ in tap water with satisfactory results, suggesting that SNPG is a promising electrode material for detecting heavy metal ions.
研究领域:
材料科学
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环境科学
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分析化学
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DOI
PubMed
高影响因子
Environmental Technology & Innovation
·
2023
·
IF 7.1
Yining Ji,Na Zheng,Bo Wu,Qirui An,Zimeng Li,Siyu Sun,Wenhui Zhang,Xiaoqian Li,Sujing Wang
A novel adsorbent was synthesized for the capture of heavy metals mixture in water by encapsulating hydroxyapatite-modified wood ear mushroom sticks biochar in calcium alginate beads (CA-HAP MB ). The surface structure and adsorption mechanism of the CA-HAP MB were characterized by Scanning electron microscopy and X-ray energy dispersion spectroscopy (SEM-EDS), Fourier transform infrared spectrometer (FTIR), X-ray diffraction patterns (XRD), and X-ray photoelectron spectroscopy (XPS). Under different conditions, CA-HAP MB for Cd 2 + and Pb 2 + were investigated for their adsorption properties in water and their competition. The adsorption capacities of Cd 2 + and Pb 2 + on the aerogel spheres reached 302.2 mg g −1 (2.69 mmol g −1 ) and 564.5 mg g −1 (2.73 mmol g −1 ), respectively (based on Langmuir). The aerogel spheres are easier to collect than biochar materials. The results show that CA-HAP MB composite aerogel spheres have a good application prospect in capturing heavy metal ions from water.
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
Sensors & Diagnostics
·
2023
·Vol. 3
·期 1
·135-146
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IF 0
Ke Gao,Yuying Du,Na Pan,Xuewei Zhou,Liping Lu,Xiayan Wang
Cadmium (Cd) can cause cell oxidative stress and cytotoxicity. Few studies have focused on inhibitory effects on Cd2+-induced oxidative stress and related cytotoxicity. Scanning electrochemical microscopy (SECM) is a highly sensitive and non-invasive electrochemical analytical method. However, no information exists on inhibitory effects on Cd2+-induced cell oxidative stress using SECM technology. Herein, we studied the effects of ascorbic acid (AsA), zinc chloride (ZnCl2), and calcium chelator 1,2-bis (2-aminophenoxy) ethane-N,N,N′,N′-tetraacetic acid tetraethoxy methyl ester (BAPTA-AM) on cell oxidative stress with SECM. Subsequently, we studied the inhibitory effects of AsA, ZnCl2, and BAPTA-AM on Cd2+-induced cell oxidative stress. Consequently, 50 μmol L−1 AsA, 5 μmol L−1 ZnCl2, and 5 μmol L−1 BAPTA-AM did not produce reactive oxygen species (ROS) and had little effect on cell viability. However, they could significantly reduce Cd2+-induced excessive ROS and alleviate apoptosis (P < 0.01). Additionally, AsA had the strongest inhibitory effects on Cd2+-induced oxidative stress, followed by BAPTA-AM and ZnCl2. The inhibitory effects of AsA, ZnCl2, and BAPTA-AM on Cd2+-induced cytotoxicity might result from directly scavenging ROS and inhibiting oxidative stress-mediated signal transduction, enhancing antioxidant activities and maintaining cell membrane stabilities, and chelating excess calcium2+ (Ca2+) to hinder its subsequent signal transduction, respectively. Scavenging excessive ROS and inhibiting cellular oxidative stress-mediated signal transduction might be the most effective way to alleviate Cd2+-induced cytotoxicity. Our study provides empirical evidence on the inhibitory effects of AsA, ZnCl2, and BAPTA-AM as specialized inhibitors against Cd2+-induced cellular oxidative stress and cytotoxicity, providing precious ideas for detoxifying toxic environmental metal pollutants.
研究领域:
生物化学
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毒理学
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环境科学
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DOI
TALANTA
·
2019
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IF 4.916
Xuejuan Wan,Haoqi Ke,Jiaoning Tang,Guanghui Yang
The development of acid environment-applicable fluorescence sensor is challenging but attractive topic, which can achieve the rapid and comprehensive evaluation of total soluble heavy metal content in natural water. In this work, a quinoline-containing Schiff base , AMQD, was utilized as fluorescence probe for Cd 2+ . Interestingly, the obtained chemosensor exhibited much better fluorescence detection sensitivity and selectivity toward Cd 2+ in acidic 10% methanol aqueous solution (pH 4) comparing to those in neutral environment. Initially, the fluorescence emission of AMQD was almost invisible with the absence of metal ions , while a significant turn-on fluorescence response (~425 nm) can be observed with the addition of Cd 2+ . The fluorescence detection possesses excellent selectivity without the interference of any other metal cation. The recognition ratio between the fluorescence sensor AMQD and Cd 2+ was confirmed to be 1:1, and the detection limit was calculated to be 2.4 nM.
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY
·
2021
·
IF 5.742
Junye Tong,Shaotong Wang,Gang Wang,Yue Liu,Yuxiang Wang,Liping Chen,Lingling Wang,Daocheng Pan,Xintong Zhang,Yichun Liu
Ion doping strategy is a promising method to enhance the efficiency of Cu 2 ZnSn(S,Se) 4 (CZTSSe) solar cells, however, most of the reported works focus on studying the single ion doping in CZTSSe absorber layers . Here, Li + &Ag + and Li + &Cd 2+ double-ion-doping strategy are applied to improve the microstructure and device performances. We found that the double-ion-doping strategy can obviously increase the grain size, reduce the thickness of fine-grain layers and enhance the device performances. Furthermore, the PCEs of Li + &Ag + and Li + &Cd 2+ doped CZTSSe solar cells are up to 8.87% and 8.39%, respectively. It shows an encouraging improvement of over 43.5% and 35.8% enhancement compared with the traditional method (6.18%), and significantly higher than single ion doping strategy (7.60%, 7.99% and 7.11% for Li + , Ag + , and Cd 2+ doped CZTSSe solar cells). This work provides a new solution to improve the microstructure and device performances of CZTSSe solar cells.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2018
·Vol. 25
·期 21
·21164-21175
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IF 2.8
Kong Qiaoping,Wei Chaohai,Preis Sergei,Hu Yun,Wang Feng
The need in simultaneous removal of heavy metals and organic compounds dictates the development of synthetic adsorbents with tailor-made properties. A nitrogen (N) and sulfur (S) co-doped graphene-based aerogel (GBA) modified with 2,5-dithiobisurea was synthesized hydrothermally for simultaneous adsorption of Cd 2+ and organic dyes—safranin-O (SO), crystal violet (CV), and methylene blue (MB). 2,5-Dithiobisurea was used as nitrogen and sulfur sources to introduce N and S-containing functional group onto graphene oxide. The adsorption mechanism of GBA towards Cd 2+ and organic dyes was studied by Dumwald-Wagner models and the results showed that surface and intraparticle diffusion was the key factor in controlling the rate of adsorption. The maximum adsorption capacities of GBA towards Cd 2+ , SO, CV, and MB comprised 1.755, 0.949, 0.538, and 0.389 mmol/g in monocomponent system, respectively. Adsorption synergism was observed with respect to Cd 2+ in presence of the dyes. The performance of GBA with respect to Cd 2+ removal from binary solutions, Cd 2+ -SO, Cd 2+ -CV, and Cd 2+ -MB, was enhanced by the presence of the dyes significantly, while the adsorption capacities towards the dyes were not affected by the presence of Cd 2+ .
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
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
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2021
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IF 3.599
Huie Jiang,Lijuan Chen,Zhijian Li,Junwei Li,Huaiqin Ma,Lulu Ning,Nihao Li,Xinhua Liu
A facile AIE fluorescent probe which exhibits a large stokes shift of 202 nm has been successfully developed. The probe can recognize Cd 2+ with high selectivity by inhibiting ESIPT process, leading to observably blue-shift and significantly enhanced fluorescence with the colour changed from green to cyan. Excitedly, the recognition of Cd 2+ is completely free from the interference of Zn 2+ and Cd 2+ could be quantitatively detected in aqueous solution with the detection limit of 1.5 × 10 −7 M. Moreover, the probe has been successfully applied to detect Cd 2+ in real water samples and image Cd 2+ in living cells.
研究领域:
分析化学
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环境科学
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生物医学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2020
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IF 9.038
Meiqing Chen,Juan Liu,Yingzhi Bi,Saeed Rehman,Zhi Dang,Pingxiao Wu
A multifunctional magnetic composite (0.3Ma-MgMnLDO-a) with the function of Cd 2+ adsorption and paracetamol (PAM) degradation was successfully fabricated. Surface morphology showed that Fe 3 O 4 agglomeration was overcome on composite. The composite had high specific surface area of 105.32 m 2 g −1 and saturation magnetization of 40 emu∙g -1 . 0.3Ma-MgMnLDO-a could reach Cd 2+ adsorption equilibrium within 5 min with 99 % removal rate. The maximum adsorption capacity was 3.76 mmol·g -1 (422.62 mg g -1 ), which apparently higher than that of Fe 3 O 4 -a and MgMnLDO-a, indicating that the Fe/Mn synergism results in excellent ability for Cd 2+ adsorption. Moreover, the composite could efficiently activate peroxymonosulfate (PMS) to rapid degrade PAM with the highest first-order rate constants (k obs = 0.116 min -1 ) and total organic carbon (TOC) removal rate (67.7 %), which also due to the contribution of Fe/Mn synergism in PMS activation. The cycling of Mn III /Mn IV and Fe II /Fe III played an important role in activating PMS to generate O 2 − • , 1 O 2 and OH for degradation. The composite exhibited both stable adsorption and catalytic performance on wide pH (3–9) and five reuse cycles. Notably, there was mutual promotion between Cd 2+ and PAM adsorption, while the coexistence of Cd 2+ had slight inhibition on PAM degradation. Overall, the magnetic composite had promising application for purifying heavy metals and pharmaceuticals.
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
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Xijin Zhao,Xin Kou,Xin Li,Mingjia Li,Ding Xi,Amjad Farid,Hui Huang,Yongpeng Zhao
Herein, multi-layer composite electrodes of MnFe 2 O 4 @carbon nanotubes/carbon cloth (MFO@CNT/CC) are prepared by dip coating and the subsequent hydrothermal method. Flexible conductive carbon cloth (CC) substrate provides a 3D strong base support. The carbon nanotubes (CNT) connected by CC form a conductive network with a large specific area, which is also conducive to electron transfer. The modified MnFe 2 O 4 nanoparticles have abundant active sites, which can enhance the electrochemical activity. CNT and MnFe 2 O 4 nanoparticles form a tandem structure beneficial to increase the active site and promote the response to heavy metal ions. The MFO@CNT/CC electrode has good detection performance for Cd 2+ (0.25–12 ppm) and Pb 2+ (0.25–12 ppm) and a low detection limit of 0.25 ppm. In the presence of interfering ions, it exhibits a highly selective response to the target ion, with minimal current changes and a range of variations (−3.48–5.59 %). The actual detection recovery is in the range of 97.33–101.17 %, suggesting its practical reliability. Furthermore, we propose a detection and analysis method that combines electrochemistry with machine learning; the model attains a perfect classification accuracy of 100 % for both Pb 2+ and Cd 2+ , underscoring the robustness of the classification. Overall, this work provides innovative composites and performance explorations for advancing high-performance simultaneous detection of heavy metal ions.
研究领域:
材料科学
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环境科学
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电化学
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产品关联
DOI
高影响因子
Journal of Cleaner Production
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2020
·
IF 7.246
Chunsheng Xie,Xiangjin Huang,Shoulian Wei,Chun Xiao,Jiangfei Cao,Zhenxing Wang
An environmentally friendly dual-template magnetic ion imprinted polymer (DMIIP) of Cd 2+ and Pb 2+ were prepared by surface imprinting technique combined with a sol-gel process using Cd 2+ and Pb 2+ as dual-templates, papain as a functional monomer and magnetic mesoporous Fe 3 O 4 @mSiO 2 as substrate. The Polymer was characterized using scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and adsorption experiments. Maximum adsorption capacities of DMIIP were 41.69 for Cd 2+ and 76.39 mg/g for Pb 2+ in a mixed solution. We also studied factors affecting adsorption and desorption of Cd 2+ and Pb 2+ . DMIIP clearly demonstrates a stronger ability than dual-template magnetic none-ion imprinted polymer (DMNIP) to selectively adsorb Cd 2+ and Pb 2+ from solutions containing other metal ions . Absorption by DMIIP was well fitted with a pseudo-second-order kinetic model . After eight adsorption-desorption cycles, adsorption capacity of DMIIP relative to Cd 2+ and Pb 2+ decreased 6.1% and 6.3%, respectively. The developed MISPE-GFAA method using DMIIP as adsorbent was satisfied to Cd 2+ and Pb 2+ determination in soil and food samples. The polymer could be a green and promising adsorbent to remove Cd 2+ and Pb 2+ from soil and food samples.
研究领域:
环境科学
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分析化学
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2021
·
IF 3.498
Jie Ding,Xiaoxuan Yuan,Jinfeng Wang,Wenfeng Mao,Jianzhong Huo,Jingbo Zhang
Metal-Organic Frameworks (MOFs) have attracted much attention due to its large specific surface, flexible porosity and unsaturated coordination bonds. Cathodic deposition is a unique in-situ potential-driven synthesis method for the deposition of thin film MOFs; however, the gradually consumption of reactants during cathodic deposition might lead to unstable and uncontrollable reaction during thin-film MOF deposition. Herein, oxygen is selected as the initial reactant for the formation of OH − , which can result in gradually and successive formation of thin-film MAF-66 (Metal azolate framework-66), and the particle size and film thickness of the MAF-66 film can be easily tuned by the deposition time. Furthermore, the cathodic deposited thin-film MAF-66 show good adsorption property for heavy metal ions , with Cd 2+ as a representative species. The adsorption capacity can reach 32.3 mg/g (removal ratio: 69%) and the deposited MAF-66 film can achieve a satisfactory recovery degree with structural and morphological stability. In this way, a novel, environmental-friendly, and controllable cathode deposition method is developed for preparation of thin-film MAF-66, which also show great promise as a candidate for heavy metal ions adsorbent.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Zi-Xiong Zhou,Jun-Jie Yang,Nan-Dan Zhao,Yan Wang,Wen-Xiu Zheng,Yuan-Ru Guo,Qing-Jiang Pan,Shujun Li
To address the issue of toxic cadmium pollution and meet the need for rapid separation from water body, a magnetic bio-composite material, marked as CFeMg, was prepared via a facile method. It explicitly includes components of cellulose nanofiber (CNF), Fe 3 O 4 and Mg (OH) 2 . The microstructures and morphology were characterized and analyzed using XRD, FT-IR, SEM, and TEM. CNF was chemically coupled by Fe 3 O 4 , which together constructed the overall layered structure. Between layers were Mg(OH) 2 flakes attached. While dealing with Cd 2+ , q max of the best sample reached 361.5 mg g −1 with high adsorption efficiency. The roles of three components were explored and the adsorption mechanism was proposed. Assisted by magnetic CNF, it only took 3 min to efficiently and completely salvage the spent CFeMg sample from water after adsorption. Due to its high adsorption capacity and facile recovery performance, the prepared composite has promising application as water treatment.
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）