Journal of Inorganic and Organometallic Polymers and Materials
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2024
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IF 3.9
Xu Mengxia,Wu Rao,Wang Shengqian,Xu Hualan,Zhong Shengliang
The preparation of coordination polymers with good room temperature phosphorescence is the focus of current research. In this paper, zinc and cadmium were used as metal ions and 2,3-pyridinedicarboxylic acid (H 2 L = 2,3-pyridinedicarboxylic acid) was used as organic ligands to successfully synthesize Cd (II) homometallic [CdL]·H 2 O and Zn(II)Cd(II) heterometallic [ZnCdL 2 ]·DMF·5H 2 O coordination polymers microstructures. In addition, morphology, powder X-ray diffraction (PXRD), infrared spectroscopy (IR), elemental analyses, thermogravimetric analysis (TGA) and their luminescence properties were studied. Cd-CP is a micron-sized spherical structure, while Zn/Cd-CP is a flower-like structure formed by the accumulation of sheets. The results show that Cd(II) homo- and Zn(II)Cd(II) heterometallic coordination polymers have quantum yields of 10.05% and 8.54%, respectively. It is worth noting that the lifetime of Cd-CP is 124.62 ms, while the lifetime of Zn/Cd-CP is significantly extended to 363.09 ms after doping with metal ion Zn 2+ . The phosphorescent lifetime of coordination polymers was improved by the heterometallic doping strategy, which provided a new idea and method for the preparation of coordination polymers with long-lived room temperature phosphorescent properties. In addition, the two coordination polymers exhibited blue and cyan fluorescence at 365 nm UV light, respectively, and a green afterglow of about 2 s could be observed with the naked eye when the UV lamp was turned off.
研究领域:
材料科学
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化学
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DOI
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Junqin Liu,Pingxiao Wu,Shuaishuai Li,Meiqing Chen,Wentin Cai,Dinghui Zou,Nengwu Zhu,Zhi Dang
A high removal rate (>99.7%) of combined arsenite (As(III)) and Cd (Cd(II)) in low concentration (1000 μg/L) from contaminated water was achieved by a calcined MgZnFe-CO 3 layered double hydroxide (CMZF) adsorbent. Batch control studies and a series of spectroscopy detection technologies were employed to investigate the removal mechanism and interactions between As(III) and Cd(II) on the interface of water/CMZF. Synergistic adsorption and photooxidation occurred based on the systematical kinetic and isotherm studies. The enhanced removal of As(III) was achieved by the photooxidation, formation of ternary As(III) Cd(II) surface complexes and enhanced hydrogen bond . Meanwhile, oxidative formed negative charged As(V) could reduce the electrostatic repulsion force between Cd(II) cations and play a role as anion bridging, consequently resulted in a stronger attraction between CMZF and Cd(II). Combined with the verdicts of relevant characterizations such as XRD, XPS and EPR, it was assumed that the deep co-removal mechanism could be attributed to the coupling of various processes including intercalation, complexation, photooxidation of As(III) and precipitation of CdCO 3 . Moreover, the successful removal of As(III) and Cd(II) from real water matrix qualified the CMZF a potentially attractive adsorbent for both As(III) and Cd(II) deep treatment in practical engineering.
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
CHEMICAL SPECIATION AND BIOAVAILABILITY
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2018
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IF 1.362
Bingyi Xie,Yanji Jiang,Zhe Zhang,Gang Cao,Huimin Sun,Nong Wang,Shengsen Wang
The transport of Pb(II) or Cd(II) in subsurface has been studied in the literature; however; their co-transport in porous media in presence of colloids has not been clearly understood. In this work, a series of column experiments were conducted to study Pb(II) and Cd(II) co-transport in saturated porous media under various experimental conditions with different combination of colloidal solution (montmorillonite colloid, manual loessial soil colloid and humic acid), flow rate (0.1, 0.5 and 1.0 ml min−1) and sand grain size (0.4–0.8mm and 0.8–2.0mm). The results showed that increase of flow rate and grain size promoted the mobility of Pb(II) and Cd(II), furthermore, the presences of mobile colloids also enhanced the mobility of the two heavy metals, meanwhile, Cd(II) showed higher mobility than Pb(II) in the columns. Findings from this work enhanced current understanding of the competitive transport and colloid-facilitated transport of heavy metals in saturated porous media.
研究领域:
环境科学
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土壤学
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产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
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IF 8.4
Lan Zhang,Junyu Liu,Keli Zhang,Xiang Dong,Yan Zhao,Qihong Cen
Solid waste derived ceramsites are a typical representative of the “treat waste by waste” concept, however, they have not been given enough attention due to high energy consumption, large carbon emissions and low efficiency. In this work, a hypoxic roasting method was used to prepare industrial solid derived ceramsite for the removal of heavy metal Cd(II) from aqueous solution. Compared with conventional ceramsite (CC), the novel hypoxic ceramsite (HC) exhibited higher specific surface area, more hydroxyl and aromatic functional groups, and more developed pore structure. It could effectively adsorb Cd(II) from aqueous solution in a wide pH range of 2–8, and the adsorption rate was 3 times that of CC. The maximum adsorption capacities of Cd(II) by CC and HC were 22.9 and 32.2 mg/g at 25 °C respectively. The adsorption mechanisms included electrostatic interaction, hydrogen bond reaction and complexation reaction. After five regeneration cycles, the removal efficiency of HC maintained 86.9 %. Furthermore, about 60 % of carbon was retained in HC, largely reducing carbon emissions. These findings reveal the energy conversation and environmental friendliness of this ceramsite, which strongly supports the development and popularization of hypoxic preparation methods for ceramsites.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
PubMed
高影响因子
JOURNAL OF WATER AND HEALTH
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2023
·Vol. 21
·期 6
·676-686
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IF 2.3
Zhang Fengrong,Zhang Cuilan,Teng Jia,Han Dandan,Wu Lishun,Hou Wanguo
View large Download slide View large Download slide Close modal Industrial heavy metal-contaminated wastewater is one of the main water pollution problems. Adsorbents are a promising method for the removal of heavy metal contaminants. Herein, polyaspartic acid/carboxymethyl poplar sawdust hydrogels (PASP/CMPP) and ascorbic acid/carboxymethyl poplar sawdust hydrogels (VC/CMPP) were prepared by aqueous polymerization using alkalized poplar sawdust (CMPP) as the substrate and PASP and vitamin C (VC) as modifiers. The effective results, provided by the characterization analysis of SEM and BET, indicate that the surface of the PASP/CMPP hydrogel has a larger number of loose pores and a larger pore volume than the VC/CMPP hydrogel. The treatment effects of the two hydrogels on simulated wastewater containing Cd(II) were investigated by a batch of experiments. The results showed that PASP/CMPP had a better adsorption effect than VC/CMPP under the same adsorption conditions. Interestingly, the solid concentration effect was found in the process of sorption kinetics and sorption isotherms. The sorption kinetic curves of Cd(II) on PASP/CMPP were well-fitted by the quasi-second-order kinetics under different adsorbent concentrations. The adsorption conforms to Langmuir and Freundlich adsorption isotherm models. More importantly, PASP/CMPP composites are expected to be used as a new kind of environmental adsorbent for wastewater treatment. Hydrogels of PASP/CMPP were prepared. The hydrogels of PASP/CMPP exhibit enhanced sorption capacities for Cd(II). The hydrogels of PASP/CMPP are potential sorbents for wastewater treatment. The solid concentration effect was found in the process of sorption kinetics and sorption isotherms. The synthesis of PASP/CMPP hydrogels provides a win-win strategy.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
MICROCHIMICA ACTA
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2019
·Vol. 186
·期 7
·1-11
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IF 5.479
Shi Erbin,Yu Guangli,Lin Huiming,Liang Cuiyuan,Zhang Tingting,Zhang Feng,Qu Fengyu
The first example of metallic bismuth encapsulated into a mesoporous metal-organic framework of the type MIL-101(Cr) matrix is presented. Bi(III)-impregnated MIL-101(Cr) (Bi(III)/MIL-101(Cr)) was dropped onto a conductive carbon cloth electrode (CCE). Then, bismuth was generated by electrochemical reduction of the Bi(III)/MIL-101(Cr) supported on CCE (Bi/MIL-101(Cr)/CCE). The resulting Bi/MIL-101(Cr)/CCE display impressive performance in terms of peak currents for the ions Cd(II) and Pb(II) when compared to the single-component counterparts. Differential pulse anodic stripping voltammetry (DPASV) enabled sensing of the two ions over linear working range of 0.1 to 30 μg L −1 and 30 to 90 μg L −1 . The parameters are refined before the detection of two metal ions, including the amount of bismuth in MIL-101(Cr), optimum pH (5.0), deposition potential (−1.2 V) and deposition time (600 s). The respective detection limits are 60 and 70 ng L −1 (at S/ N = 3). This is strikingly lower than the guideline values of domestic water given by the WHO which are 3 μg L −1 for Cd(II) and 10 μg L −1 for Pb(II). The Bi/MIL-101(Cr) onto CCE is fairly specific for Cd(II) (at around −0.76 V) and Pb(II) (at around −0.54 V), well reproducible and has excellent recovery in real water analysis.
Schematic illustration of the preparation of a Bi(III)/MIL-101(Cr) metal-organic framework, its deposition on a carbon cloth electrode (CCE), and its application for detection of Cd(II) and Pb(II) by differential pulse adsorptive stripping voltammetry (DPASV).
研究领域:
材料科学
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环境科学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Hanjing Xu,Ziqing Ou,Wenyan Li,Tian Hu,Yulong Zhang,Huijuan Xu,Jinjin Wang,Yongtao Li
Excessive cadmium(II) (Cd(II)) in soil has gravely jeopardized global ecosystem stability and human health. The removal of Cd(II) is a permanent cure to remediate Cd(II)-contaminated soil. Herein, a recyclable removal material, zeolite@cellulose-poly(acrylamide) hydrogel (Z@CA) was developed. Batch adsorption experiments and characterisations (SEM-EDS, FTIR, XRD, and XPS) were conducted to explore the adsorption capacity and mechanism of Z@CA. A pot experiment was established to evaluate the effect of Z@CA on soil Cd(II) remediation and Cd(II) toxicity in water spinach. The results showed that in aqueous solutions, the maximum adsorption capacity of Cd(II) by Z@CA was 84.4 mg·g −1 . Electrostatic attraction, ion exchange, and surface complexation collectively facilitated Cd(II) capture by Z@CA. Even after five adsorption–desorption cycles, Z@CA maintained a Cd(II) removal efficiency of 89.88 %. The results of the pot experiment showed that after applying Z@CA (2.5 w/w) in soil for 21 days, the content of bioavailable Cd(II) and total Cd(II) significantly decreased by 59.38 % and 1.75 %, respectively. The recovery rate of Z@CA reached 94.77 % and maintained its original intact structure. In addition, the Cd(II) content of water spinach was reduced by 91.43 % compared to the treatment without Z@CA, the weight, height, and relative chlorophyll content reaching 1.34, 1.73, and 1.49 times that of the treatment without Z@CA. The ideal application of Z@CA provides novel approaches and insights into the remediation of Cd(II)-contaminated soils.
研究领域:
环境科学
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材料科学
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农业
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产品关联
DOI
高影响因子
Desalination and Water Treatment
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2024
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IF 1
Dian Lv
In this paper, air-dried lake sludge was pretreated by ball milling, and then pyrolysed at 600°C to prepare lake sludge-derived ball milling biochar, and Fe 3 O 4 was loaded on lake sludge-derived ball milling biochar by chemical precipitation. Scanning electron microscopy-energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction were used to investigate and characterize the adsorbents. The results demonstrated that ball mill pretreatment and Fe 3 O 4 -loaded can effectively increase the content of O-containing groups in the adsorbent. The batch adsorption experiments revealed that Cd(II) removal followed the pseudo-second- order kinetic model and the Langmuir model. Additionally, the Cd(II) maximum adsorption by biochar (BC), MBBC and Fe 3 O 4 @MBBC was 31.33, 47.36 and 92.42 mg/g, respectively. The Cd(II) removal mechanisms were complexation, ion exchange, co-precipitation and electrostatic interaction. The Cd(II) removal efficiency on Fe 3 O 4 @MBBC was maintained at 91.35% after 5 adsorption– desorption experiments, indicating that Fe 3 O 4 @MBBC had the ability to be better applied for the removal of Cd(II)-containing wastewater.
研究领域:
环境科学
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材料科学
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水处理技术
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2018
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IF 5.667
Yuanyuan Lu,Xinqiang Liang,Jianming Xu,Ziyi Zhao,Guangming Tian
CuZrO 3 nanocomposites were prepared by chemical precipitation and oxidation at a high temperature (700 °C). The structural features of the fabricated CuZrO 3 nanocomposites (CuZrO 3 NCs) were elucidated by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The results presented herein show that these nanocomposites formed a nanograde needle structure with high crystallinity. By mixing with graphene (Gr), a CuZrO 3 -Gr composite modified glassy carbon electrode (CuZrO 3 -Gr/GCE) was successfully constructed for the simultaneous electrochemical detection of Pb(II) and Cd(II) in a acetate (NaAc-HAc) buffer solution (pH 4.6) via square wave anodic stripping voltammetry (SWASV). Due to the synergetic effect of the CuZrO 3 nanoparticles and graphene, the CuZrO 3 -Gr/GCE showed excellent electrical conductivity and mechanical stability in the presence of Pb(II) and Cd(II) ions. The limits of detection were 0.1 μg L −1 for Pb(II) and 0.5 μg L −1 for Cd(II). Application of this method for the co-detection of two ions in soil samples is expected to obtain useful results and possess significant advantages over tradition detection methods.
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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产品关联
DOI
高影响因子
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
·
2020
·Vol. 75
·期 8
·733-737
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IF 0.839
Gao-Feng Wang,Shu-Wen Sun,Hong Sun,Bo-Hui Wei,Yan-Fei Zhao,Li-Xin Meng
A three-dimensional (3D) two-fold interpenetrated coordination polymer, {[Cd(bipmo)(bpda)]·1.25(H 2 O)} n ( 1 ), (bipmo = bis(4-(1H-imidazol-1-yl)phenyl)methanone, H 2 bpda = 1,1ʹ-biphenyl-2,2ʹ-dicarboxylic acid), was synthesized by a solvothermal method. It has been characterized by elemental analyses, infrared (IR) spectroscopy, and single-crystal X-ray diffraction. The topological structure of 1 consists of uninodal dia nets with two-fold penetration. The thermal stability and the luminescence properties of complex 1 were investigated.
研究领域:
化学
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材料科学
✓ 已验证
DOI
高影响因子
RSC Advances
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2021
·Vol. 11
·期 28
·17240-17248
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IF 3.361
Jinying Hou,Yuping Fan,Xiaomin Ma,Xianshu Dong,Suling Yao
Fly ash, as waste from coal combustion, has been effectively modified to improve its adsorption to remove toxic metals, and modified fly ash could be used for electrode modification to improve the sensitivity of the electrode. In this paper, a modified fly ash doped carbon paste electrode for the detection of trace cadmium was first and successfully developed. Several parameters affecting the anodic stripping voltammetric response of Cd(II) were optimized, such as the composition of the paste, pH of the measurement solution, the concentration of Sb(III) (or Sb(III) and Bi(III)), deposition potential and deposition time. Compared with Sb/MFA-CPE, the square wave anodic stripping voltammetry (SWASV) response of Cd(II) at Sb/MMFA-CPE had a higher linear range and lower sensitivity. Relative to MFA, MMFA-CPE, due to the introduction of CTAB, provided a larger effective area for interacting with analytes, more binding sites and further facilitating electron transfer at the electrode, and amplified the electrochemical signal. Compared with Sb/MMFA-CPE, the SWASV response of Cd(II) at Sb–Bi/MMFA-CPE had a higher linear range and similar sensitivity, since mechanisms at bismuth and antimony film electrodes were different. Besides, the electrode reactions of Cd(II) at bismuth film electrodes involved adsorption phenomena while they were free of adsorption at antimony film electrodes.
研究领域:
环境科学
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分析化学
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DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL CRYSTALLOGRAPHY
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2013
·Vol. 44
·期 2
·63-69
·
IF 0.513
Ma De-Yun,Guo Hai-Fu,Qin Liang,Li Yue,Ruan Qiong-Ting,Huang Yue-Wu,Xu Jun
A new 2D Cd(II) coordination polymer, {[Cd(4-cpa) (bpp) 2 H 2 O]·(4-cpa)·(H 2 O)}
n
( 1 ) [4-cpa = 4-chlorophenoxyacetate, bpp = 1,3-bis(4-pyridyl)propane] has been hydrothermally synthesized and characterized by elemental analysis, IR-spectroscopy, thermogravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction. Complex 1 consists of discrete 2D cadmium complex, 4-cpa counter ions and free water molecules, which are assembled into a 3D supramolecular structure through hydrogen bonds and π···π stacking interactions. Three-dimensional fluorescence spectra of 1 were detected at room temperature under the excitation and the emission wavelengths in the range of 300–600 nm with the interval of 5 nm. The lifetime of the excited state of 1 upon excitation of 443 nm in solid-state at room temperature is 30.21 ns. The 4-cpa ligand and complex 1 have been screened for their phytogrowth-inhibitory activities against Brassica campestris L. and Echinochloa utilis Ohwi et Yabuno , and the results are compared with the activity of sodium 2,4-dichlorophenoxyacetate. Graphical Hydrothermal synthesis of a new 2D Cd(II) coordination polymer, {[Cd(4-cpa) (bpp) 2 H 2 O]·(4-cpa)·(H 2 O)}
n
( 1 ) [4-cpa = 4-chlorophenoxyacetate, bpp = 1,3-bis(4-pyridyl)propane] leading to a material that displays intense blue 3D luminescence properties and phytogrowth-inhibitory activities.
研究领域:
无机化学
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配位化学
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材料科学
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生物无机化学
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环境毒理学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）