Small
·
2024
·Vol. 21
·期 1
·2408485
·
IF 13
Lin-Tao Jiang,Yi-Bing Huang,Shao-Min Pei,Xiao-Ming Jiang,Bin-Wen Liu,Guo-Cong Guo
The trigonal planar unit possesses significant hyperpolarizability and polarizability anisotropy, which makes it useful for optimizing nonlinear optical (NLO) materials, however, chalcogenide with this unit has seldom been reported. In this work, a novel approach is introduced by integrating the unprecedented trigonal planar MS 3 (M = Cd/In, Hg/In) motifs into the nearly optically isotropic tetrahedral units, resulting in two novel chalcogenides CsM 2 In 2 S 6 (M = Cd/In, 1 ; Hg/In, 2 ). Notably, structures 1 and 2 feature nearly planar triangular units at the center, encircled by three trimers, further interconnecting each other to create 3D frameworks. Importantly, phases 1 and 2 display phase-matching (PM) capabilities, primarily attributed to incorporating trigonal planar MS 3 units that additionally enhance polarizability anisotropy. Furthermore, compounds 1 and 2 demonstrate moderate second-harmonic generation (SHG) signals (0.70 and 0.84 × AgGaS2@1.7 µm). This study pioneers an efficient strategy for the design of infrared NLO crystals with PM capabilities.
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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.
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DOI
PubMed
高影响因子
Environmental Technology & Innovation
·
2025
·
IF 7.1
Changsheng Jin,Yin Gao,Jingjing Lu,Yuxi Liu,Baowei Hu
Soils contain abundant organic matter (OM) and Mn(oxyhydr)oxides (MnOs) composites, which primarily control the geochemical behavior of Cd. However, the impact of manganese phase transformation on the retention and availability of Cd remains unclear. Here, four organo-mineral composites were synthesized using birnessite (δ-Mn Ⅳ O 2 ), β-Mn Ⅲ,Ⅳ O 2 , γ-Mn Ⅲ OOH, and Mn Ⅱ,Ⅲ 3 O 4 with fulvic acid (FA), during adsorption to preformed MnOs with 5 wt% organic carbon loadings. The performance and underlying Cd(II) adsorption mechanism by resulting FA-MnO composites were explored. Results showed that δ-MnO 2 transformation decreases Cd(II) adsorption capacity by 23.02–45.44 % on the resulting FA-MnOs. This reduction was attributed to increased aggregation of MnO particles and competition from generated Mn(II/III) for available vacancy sites. Cd undergoes redistribution within the FA-MnOs during the transformation of δ-MnO 2 . The amount of Cd associated with MnOs decreases by 9.46–37.08 %, while OM bound-Cd increases by 2.82–10.49 %. FAδ-MnO 2 predominantly interacted with Cd(II) through tetravalent manganese, forming stable coordination or chemical bonds. In contrast, FAγ-MnOOH and FA-Mn 3 O 4 primarily interacted with Cd(II) through divalent manganese via electrostatic attraction and ion exchange, resulting in weaker binding stability. These findings provide new insights into the roles of manganese transformation in the geochemical cycling of Cd in soils.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Zhenyu Wang,Tong Qi,Hebin Sun,Ningran Wang,Wenbin Zhang,Jianlong Zhao,Liancheng Zhao,Lijuan Liang
The creation of dependable analytical platforms capable of detecting multiple heavy metal ions (HMIs) concurrently continues to be a significant challenge in environmental monitoring. This study introduces an innovative composite sensing material composed of gold nanoparticles (AuNPs) modified UiO-66-NH 2 metal organic frameworks (MOFs) and carbon nanotubes (CNTs) for simultaneous detection of multiple HMIs. UiO-66-NH 2 , with its extensive specific surface area and three-dimensional porous framework, facilitates effective ion diffusion and target preconcentration. The interconnected CNTs network significantly enhances electron transfer kinetics and expands the electroactive surface area, as confirmed by cyclic voltammetry (CV) analyses. AuNPs can effectively amplify electrochemical reactions and enhance the sensitivity of electrochemical detection. The thoughtful design of this sensing material amalgamates the unique benefits of its constituents. This sensing material attains remarkably low limits of detection (LOD), which is 0.021 μg·L −1 for Cd 2+ and 0.008 μg·L −1 for Pb 2+ , showcasing outstanding resistance to interference in complex environments. The potential applicationsapplications of MOF-based composites in the electrochemical sensors of HMIs are expanded by this methodology.
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DOI
高影响因子
POLYHEDRON
·
2024
·
IF 2.4
Hao Li,Si-Jiao Yang,Ming-Yu Dong,Gui-Mei Tang,Yong-Tao Wang,Seik-Weng Ng
A set of Cd(II)-based metal coordination complexes with indazole and benzimidazole scaffolds, namely, [Cd( IZBI) Cl 2 ] n ·H 2 O ( 1 ) [Cd( IZBI) Br 2 ] n ·H 2 O ( 2 ) [Cd( IZBI) I 2 ]·H 2 O ( 3 ) ( IZBI stands for 3-(1 H -benzimidazol-2-yl)-1 H -indazole), were obtained through solvothermal reaction conditions. They have been structurally characterized by elemental analysis, single-crystal X-ray diffraction and IR spectra. Single-crystal X-ray diffraction analysis reveals that complexes 1 – 3 show one-dimensional polymeric, dimeric and mono-nucleic features, respectively, which indicates that the halide anions affect the final structure of metal coordination complexes. The luminescent maximal peaks can be observed 448, 456 and 462 nm for complexes 1 – 3 , respectively. Compared with the emission peak of IZBI , there exist bathochromic phenomena for metal coordination complexes 1 – 3 , where the red-shifted values can be observed to be 46, 54 and 60 nm, respectively. The order of the photoluminescent emission peaks is summarized as the following: 3 > 2 > 1 . The single-crystal X-ray diffraction analysis shows that it occurs the order of the dihedral angles between the pyrazole and imidazole rings ( 3 < 2 < 1 ). The Hirshfeld analysis demonstrates that there is a positive correlation between the sequence of H∙∙∙C/C∙∙∙H intermolecular contacts and the dihedral angles formed between the pyrazole and imidazole rings, which is negative correlation with the positions of the luminescent maxima. Additionally, the thermostable behaviors of these complexes were inspected in detail.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Weixia Yang,Meijie Cheng,Yong Han,Xueli Luo,Chunhua Li,Wenzhi Tang,Tianli Yue,Zhonghong Li
Here, inspired by the poisoning process of heavy metal in human body that the accidental ingested heavy metal can anchor to the functional groups of DNA/protein/enzyme to exert their toxicities during the rapid blood circulation, we developed the adsorbent that enveloped Etched UiO-66 with abundant functional groups into chitosan (CTS) aerogel to capture Pb(II) and Cd(II) in aqueous and apple juice. SEM, XRD and FTIR spectra were used to characterize the Etched UiO-66/CTS aerogel. The results showed that Etched UiO-66/CTS aerogel has a three-dimensional porous structure, and –OH groups of CTS interact with Zr(IV) of Etched UiO-66 to form the stable UiO-66/CTS aerogel. Benefiting from the intrinsic properties of porous and abundant functional groups, Etched UiO-66/CTS aerogel exhibits satisfactory adsorption capacities of 654.9 mg g −1 for Pb(II) and 343.9 mg g −1 for Cd(II) at 45 °C. Moreover, the aerogel shows excellent removal efficiencies of 98.21% for Pb(II) and 98.70% for Cd(II) with initial concentration of 1.0 mg L −1 in apple juice with little effect on the quality of apple juice. This strategy of mimetic heavy metal ions’ poisoning behavior opens up a new avenue for the removal of heavy metal ions in complex matrices.
研究领域:
环境科学
·
材料科学
·
吸附技术
·
食品安全
·
纳米材料
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Hanlin Li,Shuangqin Tian,Xin Wang,Yujing Long,Tianhong Ye,Lihong Tang
When used individually, ZIF-8 suffers from hydrolysis in aqueous media, while CAU-17 is limited by its low specific surface area (64.71 m²/g). Therefore, we employed an in situ self-assembly strategy to construct a MOF-on-MOF heterostructure (CAU-17@ZIF-8) for the synergistic removal of Cd(II) and methylene blue (MB). The composite achieved maximum adsorption capacities of 607.65 mg/g for Cd(II) and 1025.38 mg/g for MB, with a 99% removal efficiency for low-concentration pollutants in real wastewater. Even after five cycles, 75% efficiency was maintained. Mechanistic studies combining batch experiments, characterization, and DFT calculations revealed that the heterojunction interface promotes substantial charge transfer from CAU-17 to ZIF-8, significantly enhancing electrostatic attraction toward cations. Simultaneously, new mesopores formed at the interface increase the specific surface area (239.62 m 2 /g) and provide rapid mass-transfer channels. MB adsorption is governed by electrostatic attraction, hydrogen bonding, and π-π interactions, while Cd(II) adsorption relies on ion exchange, coordination, and electrostatic attraction. This work demonstrates that constructing MOF-on-MOF heterojunctions is a promising strategy to overcome the intrinsic limitations of single MOFs in water remediation, thereby greatly enhancing the adsorption capacity toward methylene blue (MB) and Cd(II).
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高影响因子
Separations
·
2025
·Vol. 12
·期 7
·172
·
IF 2.7
Chunxiao Wang,Zhirong Chen,Nana Wang,Jianqiao Wang,Runshen He,Yu Chen,Haerfosai Nuhu,Hang Chen,Zhixuan Lin,Minqi Fan,Mingdong Chang
Heavy metal pollution, especially from Pb(II) and Cd(II), poses significant risks due to its persistence and bioaccumulation potential. Traditional removal methods face challenges like high costs and secondary pollution. This study developed a novel three-dimensional porous adsorbent XBS, derived from xanthate-modifiedPhanerochaete sordidaYK-624 (a white-rot fungus), for the rapid and efficient removal of Pb(II) and Cd(II) from wastewater. Characterization showed that XBS has a sponge-like structure with abundant functional groups, significantly enhancing its adsorption capacity and kinetics. XBS achieved 96% Pb(II) and 32% Cd(II) removal within 1 min at a 0.25 g/L dose, reaching over 95% of the maximum adsorption capacity within 30 min for Pb(II) and 240 min for Cd(II). The maximum capacities were 224.72 mg/g for Pb(II) and 82.99 mg/g for Cd(II). Kinetic and thermodynamic analyses indicated a chemisorption-driven process, which was both endothermic and spontaneous. XBS exhibited high selectivity for Pb(II) over Cd(II) and other metals (Tl(I), Cu(II)), attributed to stronger covalent interactions with sulfur- and nitrogen-containing groups. Mechanistic analyses (XRD, FTIR, and XPS) revealed that removal occurs via ion exchange, complexation, and precipitation, forming stable compounds like PbS/CdS and PbCO3/CdCO3. Given its cost-effectiveness, scalability, and high efficiency, XBS represents a promising adsorbent for heavy metal remediation, particularly in Pb(II)-contaminated wastewater treatment applications.
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高影响因子
JOURNAL OF CHEMICAL CRYSTALLOGRAPHY
·
2026
·Vol. 56
·期 1
·27
·
IF 0.7
Ni Yingjia,Jin Shouwen,Hong Ruyu,Hong Huiling,Gao Rui,Wang Daqi
The hydrothermal reaction of the Cd( O Ac) 2 with the 2-methylimidazole (mim) in the presence of the monocarboxylic acids produced five unpublished mim-derived coordination compounds of Cd(mim) 2 (ibu) 2 (1) (Hibu = ibuprofen), Cd(mim) 2 (sal) 2 (2) (Hsal = salicylic acid), Cd(mim) 2 (pba) 2 (3) (Hpba = 3-phenoxybenzoic acid), Cd(mim) 2 (tba) 2 (4) (Htba = 2,4,6-trichlorobenzoic acid), and Cd(mim) 2 (tmba) 2 (5) (Htmba = 2,4,6-trimethoxybenzoic acid) and they are structurally characterized by the EA, IR spectra, TG and SCXRD analysis. The X-ray investigations declared that all these coordination compounds demonstrated the mononuclear graphs with the pseudo-tetrahedral/octahedral/square-pyramidal geometries around the Cd 2+ . The mim molecules take the coordination mode of the monodentate by only using its imidazole ring N atoms. The CO 2 − coordinated to the Cd 2+ ion in monodentate, and chelating bidentate types. The intricate intra- and intermolecular traditional H-bonds are uncovered by the X-ray crystallographic studies, which mediate the discrete systems into the 1D–2D supramolecules. Graphical Five mononuclear Cd 2+ complexes with the pseudo-tetrahedral/octahedral/square-pyramidal coordination geometries have been synthesized and characterized, the intricate intra- and intermolecular traditional H-bonds mediate the discrete systems into the 1D-2D supramolecules.
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高影响因子
Metals
·
2022
·Vol. 12
·期 1
·149
·
IF 2.695
Chunhui Zheng,Chunlin He,Yingjie Yang,Toyohisa Fujita,Guifang Wang,Wenchao Yang
The continuous expansion of the market demand and scale of commercial amidoxime chelating resins has caused large amounts of resin to be discarded around the world. In this study, the waste amidoxime chelating resin was reutilized as an adsorbent for the removal and recovery of Pb(II), Cu(II), Cd(II) and Zn(II) ions from aqueous solutions. The physical morphology and chemical composition of the waste amidoxime chelating resin (WAC-resin) from the factory was characterized by the elemental analyzer, X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy. The influence of the initial metal ions concentration, contact time, temperature and the solution pH on the adsorption performance of the metal ions was explored by batch experiments. It was shown that the optimal pH was 4. Kinetic studies revealed that adsorption process corresponded with the pseudo-second-order kinetic model and the adsorption isotherm was consistent with the Langmuir model. At room temperature, the adsorption capacities of WAC-resin for Pb2+, Cu2+, Zn2+and Cd2+reached 114.6, 93.4, 24.4 and 20.7 mg/g, respectively.Keywords:waste amidoxime chelating resin;characterization;reutilization;heavy metals
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高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2022
·
IF 4.966
Bo Li,Ming Li,Panpan Zhang,Yuanfeng Pan,Zhihong Huang,Huining Xiao
Novel porous cellulose/chitosan composite spheres loaded with nanoscale zero-valent iron (nZVI/PCSs) were fabricated for the removal of Cd (II) from aqueous solution and the remediation of Cd species in contaminated soil. The green-based nZVI/PCSs exhibited the improved dispersion and antioxidability of nZVI compared to the pristine one. The results from SEM/EDS suggested that the Fe (0) took part in the adsorption of the Cd (II) ions; whereas XPS analysis revealed that Fe (0) and amino groups in nZVI/PCSs played crucial roles in Cd (II) removal via the effects of precipitation or chelation. The results of the experiments in aqueous solution and model fitting showed that the adsorption of Cd (II) induced by nZVI/PCSs was better described by Langmuir isotherm and the maximum adsorption capacity reached up to 110.3 mg/g. The soil remediation tests demonstrated that nZVI/PCSs could significantly enhance cadmium immobilization, enabling the conversion of most exchangeable Cd species to Fe Mn oxides and organic matters in contaminated soil after the remediation. Overall, nZVI/PCSs have great potential as an excellent adsorbent with cost-effectiveness in Cd (II) removal from the aqueous solution and the remediation of Cd species in contaminated soil phases.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 36
·17438-17455
·
IF 3.925
Qingcan Xiang,Zongxue Yu,Xuyang Li,Pingquan Wang,Niandan He,Yao Pang,Qiuxiang Wang,Yucheng Liu
A g-C3N4/NH2-MIL-88B(Fe)/CD@GO membrane (M2) was prepared by a simple vacuum filtration method. By embedding a Z-scheme heterojunction composite photocatalyst into graphene oxide (GO) nanosheets, not only can the water molecule transport channel be regulated, but the membrane can also be endowed with photocatalytic activity and membrane fouling is effectively alleviated. The pure water permeation flux of M2 (253.26 L m−2 h−1 bar−1) was 13 times that of the original GO membrane (18.83 L m−2 h−1 bar−1). What's more, even after 10 cycles, M2 still maintains excellent separation efficiency and flux. After six cycles, the rejection of Congo Red (CR), Malachite Green (MG) and Rhodamine B (RhB) by M2 was over 95%. At the same time, under the conditions of an extreme pH value and high salt concentration, the rejection of dye remained at the original level after six cycles. Therefore, the novel photocatalytic membrane has excellent separation performance, stability and photocatalytic activity, and can be used as a potential membrane for wastewater purification and environmental protection.
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高影响因子
危险品化学品经营许可证（带存储）