SEPARATION AND PURIFICATION TECHNOLOGY
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2022
·
IF 9.136
Zhiqiang Guo,Lei Sun,Hui Hou,Jian Zhou,Yuan Li,Liangliang Hu,Jinzhang Xu
The preparation of the maple leaf-like MnO 2 –SiO 2 @PDA biomimetic composites not only overcame the problem of easy agglomeration of nanoparticles, but also provided rich functional groups, large specific surface areas and good stability, achieving the efficient sorption of Cu(II), Cd(II) and Ni(II) from aqueous solution. The maximum sorption capacities of the MnO 2 –SiO 2 @PDA towards Cu(II), Cd(II) and Ni(II) attained from the Langmuir model were 218.788, 383.420 and 148.939 mg·g −1 , respectively. The sorption of Cu(II), Cd(II) and Ni(II) on the MnO 2 –SiO 2 @PDA were strongly affected by pH, but not by ionic strength, showing good resistance to salt interference. The main sorption mechanism of the MnO 2 –SiO 2 @PDA towards Cu(II), Cd(II) and Ni(II) was the strong surface complexation of the functional groups on the MnO 2 –SiO 2 @PDA with Cu(II), Cd(II) and Ni(II). Moreover, the radii of Cu(II), Cd(II) and Ni(II) ions and their complexation strength with the MnO 2 –SiO 2 @PDA jointly determined the order of the competitive sorption capacities as Cu(II) > Cd(II) > Ni(II). Given the above analyses, the maple leaf-like MnO 2 –SiO 2 @PDA biomimetic composites have excellent application prospects in practical wastewater treatment.
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高影响因子
TRANSITION METAL CHEMISTRY
·
2015
·Vol. 40
·期 7
·769-777
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IF 1.306
Wang Hu,Zhang Xiao-Yin,Bi Cai-Feng,Fan Yu-Hua,Meng Xiang-Min
Abstract Three complexes, Zn(C 40 H 36 N 4 O 8 )·3CH 3 OH ( 1 ), Ni(C 40 H 36 N 4 O 8 )·3CH 3 OH ( 2 ) and Co(C 40 H 36 N 4 O 8 )·3CH 3 OH ( 3 ), with a sexidentate (N 2 O 4 ) symmetric bis-Schiff base ligand (C 40 H 36 N 4 O 8 = 1,2-bis(2-methoxy-6-formylphenoxy)ethane- l -tryptophan) have been synthesized and characterized by physicochemical and spectroscopic methods. The X-ray crystal structures show that the metal atoms of three complexes are all six-coordinated by two nitrogens from C=N groups, two oxygens from ether groups and two carboxylic oxygens in the mono-ligand, forming a distorted octahedral geometry. The complexes were screened as photocatalysts for the degradation of methylene blue, rhodamine B and methyl violet. All three complexes proved to be good candidates for the photocatalytic degradation of methylene blue and complexes 2–3 are also good photocatalysts for the degradation of rhodamine B. The mechanism of these photocatalytic degradations is discussed. Graphical Abstract The main characterization and photocatalytic experiment of three complexes.
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高影响因子
JOURNAL OF CHEMICAL SCIENCES
·
2016
·Vol. 129
·期 1
·9-20
·
IF 1.085
LIN HONGYAN,SUN JUNJUN,LIU∗ GUOCHENG,WANG XIANG,CHEN PANWEN
Three new Ni(II) coordination polymers exhibiting different 1D and 2D framework structures have been hydrothermally synthesized: [Ni(L 1 )(1,3-BDC)(H 2 O) 3 ] ⋅ H
2 O ( 1 ), [Ni(L 1 )(1,3,5-HBTC)(H 2 O) 3 ] ( 2 ), [Ni 3 (L 2 ) 3 (1,3,5-BTC) 2 (H 2 O) 8 ] ⋅12H 2 O ( 3 ) [L 1 = N,N ′ -bis(pyridin-3-yl)cyclohexane-1,4-dicarboxamide, L 2 = N,N ′ -bis(3-pyridyl)octandiamide, 1,3-H 2 BDC = 1,3-benzenedicarboxylic acid, 1,3,5-H 3 BTC = 1,3,5-benzenetricarboxylic acid]. X-ray single crystal diffraction analyses revealed that polymer 1 is a 2D interlaced layer based on the 1D [Ni(L 1 )(1,3-BDC)(H 2 O) 3 ] meso-helical chains. Polymer 2 is a 1D wave-shaped chain derived from the 1D [Ni(L 1 )] n chain and monodentate coordinated 1,3,5-HBTC anions. Polymer 3 possesses an interesting 2D layer containing the trinuclear [Ni 3 (1,3,5-BTC) 2 ] substructural unit and 1D zigzag [Ni(L 2 )] n chain, representing a 3,4-connected {6 ⋅8 2 } 2 {6 2 ⋅8 2 ⋅10⋅12} topology. Finally, the adjacent 1D chains or the 2D layers are connected through hydrogen bonding interactions to construct 3D supramolecular networks. Further, the thermal stability, solid state fluorescent property and photocatalytic activity of 1–3 have been investigated.
Three new Ni(II) coordination polymers have been hydrothermally synthesized by self-assembly of two bis-pyridyl-bis-amide ligands (L 1 , L 2 ) and two aromatic polycarboxylates (1,3-H 2 BDC, 1,3,5-H 3 BTC). The thermal stability, fluorescent properties and the photocatalytic activities of polymers 1 – 3 have been studied.
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高影响因子
RSC Advances
·
2016
·Vol. 6
·期 73
·69370-69380
·
IF 3.289
Juncai Zhang,Youning Chen
With chloromethylated polystyrene resin being the base material, a new type of salicylic acid-type chelating resin with high capacity was prepared by grafting glycidyl methacrylate (GMA) on the surface of the resin via surface-initiated atom transfer radical polymerization and followed by the derivatization with 5-aminosalicylic acid. Fourier-transform infrared spectrometry and X-ray photoelectron spectroscopy were used to characterize the surface composition of the resin. It was found that the grafting degree of GMA increased linearly with the extension of ATRP time and GMA concentration. The maximum adsorption capacities of the resin were up to 4.23 mmol g−1 for Fe(III), 4.02 mmol g−1 for Ag(I), 2.36 mmol g−1 for Ni(II) and 1.75 mmol g−1 for Cu(II) at pH 4.0, respectively. The adsorption kinetics of the four metal ions conform to the model of pseudo second-order kinetics, and adsorption equilibria were better characterized by the Langmuir equation. Thermodynamic parameters were calculated to understand the nature of the adsorption process. The resin possesses excellent desorption rate and reusability. All these results indicate that the resin could be potentially applied to the efficient removal of heavy metal ions from waste water.
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高影响因子
JOURNAL OF COORDINATION CHEMISTRY
·
2025
·
IF 2.1
Hou Cong Li,Ming Zhu Wang,Ye Fan Zheng,Ning An,Min Hou,Jing Hu,Wen Ge Li
Three chlorinated metal complexes [Ni2(HL)2(C2H5OH)2Cl2]·2C2H5OH (complex 1), [Co(HL)(L)] (complex 2), and [Zn2(HL)2(CH3COO)2] (complex 3) derived from 5-chlorosalicylaldehyde and 2-(2-aminophenyl)-1H-benzimidazole Schiff base ligand (H2L). The crystal structures of the three complexes were characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis, X-ray single-crystal diffraction, and UV-visible absorption spectrum. The in vitro cytotoxicity of chlorinated ligand and its metal complexes were evaluated on four different tumor cell lines (A-549 lung cancer, SMMC-7721 liver cancer, MDA-MB-231 breast cancer, and CNE-2Z nasopharyngeal carcinoma), and normal ovarian epithelial cell (IOSE 80) was determined by MTT assay. The results indicated that chloro-benzimidazole Schiff base Co (III) complex (complex 2) displayed higher cytotoxicity against MDA-MB-231 cell line than cisplatin, while the cytotoxicity on IOSE 80 was lower than that of cisplatin. The results of further study of MDA-MB-231 cells by complex 2 showed that complex 2 could inhibit MDA-MB-231 cells in the G0/G1 phase, inhibit cell proliferation and migration, promote cell apoptosis, and increase intracellular ROS level. The Western blot analysis demonstrated that complex 2 could increase Bax protein expression and decrease Bcl-2 protein expression in MDA-MB-231 cells.
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高影响因子
JOURNAL OF INORGANIC BIOCHEMISTRY
·
2016
·
IF 3.205
Hu Wang,Tianxiang Lan,Xia Zhang,Dongmei Zhang,Caifeng Bi,Yuhua Fan
Three Ni(II) complexes with a sexidentate N 2 O 4 -donor bis-Schiff base ligand, namely Ni(C 36 H 34 N 2 O 8 )·2CH 3 OH ( 1 ), Ni(C 28 H 34 N 2 O 8 S 2 )·H 2 O ( 2 ) and Ni(C 40 H 36 N 4 O 8 )·3CH 3 OH ( 3 ) (C 36 H 34 N 2 O 8 = 1,2-bis(2-methoxy-6-formylphenoxy)ethane- l -phenylalanine; C 28 H 34 N 2 O 8 S 2 = 1,2-bis(2-methoxy-6-formylphenoxy)ethane- l -methionine; C 40 H 36 N 4 O 8 = 1,2-bis(2-methoxy-6-formylphenoxy)ethane- l -tryptophan) were synthesized and structurally characterized. Theoretical studies of the three complexes were carried out by density functional theory (DFT) Becke's three-parameter hybrid (B3LYP) method employing the 6-31G basis set. Moreover, the inhibitory activities were tested in vitro against jack bean urease . At the same time, molecular docking was investigated to determine the probable binding mode by inserting the complexes into the active site of jack bean urease. The experimental values and docking simulation exhibited that complex 3 showed strong inhibitory activity (IC 50 = 11.27 ± 2.08 μM) compared with the positive reference acetohydroxamic acid . Their structure-activity relationships were further discussed.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jie Wang,Chaowu Wang,Qibo Zhang
Recycling secondary resources that are rich in valuable metals can help reduce dependence on primary metal ores, foster sustainable industrial development, and enhance the resilience of the metal resource supply chain. This study presents a facile solvent extraction strategy for the efficient recovery of cobalt and nickel from spent choline chloride-ethylene glycol (ChCl-EG, Ethaline) deep eutectic solvent (DES) using bis(2,4,4-trimethylpentyl) phosphonic acid (Cyanex272) as the extractant. By integrating a water-modification approach with pH regulation, the viscosity of the Ethaline system is significantly reduced, while the coordination structures of Co(II) and Ni(II) ions are altered from [CoCl 4 ] 2 ⁻ and [Ni(EG) 3 ] 2+ to [CoCl 2 (H 2 O) 2 (EG) 2 ] 0 and [NiCl(H 2 O) 2 (EG) 2 ] + . This dual modification enables selective extraction with recovery efficiencies exceeding 99 % for both metals, achieving a separation coefficient ( β Co²⁺/Ni²⁺ ) of 9550. Mechanistic insights from density functional theory (DFT) calculations reveal that the preferential extraction of Co(II) stems from its more negative Gibbs free energy change (ΔG Co(II) = -0.21 kJ/mol vs. ΔG Ni(II) = -0.04 kJ/mol) during complexation with saponified Cyanex272. Furthermore, the regenerated Ethaline and Cyanex272 exhibit exceptional stability, maintaining > 95 % extraction efficiency over 10 cycles. This work advances solvent extraction technology by demonstrating a synergistic water-pH strategy for DES-based systems, offering a facile and scalable pathway for recycling metal-laden DES-based electrolytes in industrial applications.
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高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Mengjie Zhao,Kangping Cui,Xing Chen,Haiyang Li,Wenming Wu
This study presents two novel chelating resins for achieving ultra-low discharge standards in electroplating wastewater treatment, addressing the critical challenge of reducing Ni concentration from about 1 mg/L to <0.1 mg/L in secondary effluent. SDC-1 and SDC-2 were innovatively synthesized by functionalizing styrene-divinylbenzene (SDC) white spheres with hydroxamic acid and sodium dithiocarbamate groups, respectively. Both resins demonstrated exceptional performance in removing complexed Ni(II) from secondary effluent to below 0.1 mg/L, with SDC-2 achieving remarkably low concentrations of 0.03 mg/L, meeting national ultra-low emission standards. Comprehensive characterization using FTIR, FESEM, BET, and XPS, combined with thermodynamic and kinetic modeling and DFT calculations, revealed the superior adsorption mechanisms. The adsorption behaviors of both resins fitted well with the Freundlich isotherm model and the pseudo-second-order kinetic model. DFT calculations unveiled that both resins possess abundant active sites capable of decomposing Ni(II) complexes for deep wastewater treatment. Mechanistic insights showed that SDC-1 forms stable five-membered cyclic coordination complexes through O and N atoms of -CONHOH groups, while SDC-2 creates more structurally stable polydentate complexes via simultaneous coordination of N and S atoms in -HN-C(=S)-S-Na + groups with Ni(II). This work establishes a promising new strategy for deep removal of complexed heavy metal ions to achieve ultra-low discharge standards in industrial wastewater treatment.
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Chen Ling,Zhengxiao Wang,Yixuan Song,Lichun Fu,Yanhong Zhang,Weinan Wang,Weinan Xing,Jiangang Han
The efficient removal of complexed heavy metals (HMs) from alkaline electroless plating wastewater is still challenging. A polyamine-grafted chitosan–wood flour-based composite (ACS-AWF) was optimally synthesized. Its adsorption behavior toward Ni(II) in simulated pyrophosphate (PP, the main complextant)–Ni plating wastewater and underlying mechanisms were examined. PP considerably promoted Ni(II) adsorption by up to 108.1%, and the enhancement tolerated excess PP or other substances. Ni(II) adsorption by ACS-AWF was 1.38–∼10 times that of several commercial HM-favored resins in the same complexed system. According to the liquid solute species tracking, solid chemical characterizations (eg. synchrotron radiation X-ray adsorption spectroscopy), and theoretical calculations, it was found that Ni(II), primarily as NiP 2 O 7 2− , could be captured by charge-assistant coordination with the surface polyamine. Then, the coadsorption of PP altered the interface properties via both electrostatic shielding and bridging effect, enhancing Ni(II)–amine coordination efficiency. A dinuclear multilayer coordination structure [-amine–Ni–PP–Ni–amine-] was proposed as the dominant Ni(II) binding mode in the presence of PP. Ni(II) and PP could be sequentially desorbed from ACS-AWF using gradient elution with ＞95.5% Ni(II) purity. ACS-AWF was then stably reused in five cycles (capacity loss ＜10%). These results may guide adsorbent design and application in HM purification and recycling from complexed wastewater.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 47
·期 3
·1197-1208
·
IF 3.925
Wei-Ye Zhang,Si-Qing Ye,Xin-Tao Yang,Bao-Shi Zhu,Wei-Li Li,Hong-Xing He,Xiu-Jun Deng
A novel magnetic graphene oxide-based surface imprinted polymer (Fe3O4@GO@IIP) was synthesized using the surface imprinting technology to selectively adsorb Ni(II) from aqueous solution. The imprinted polymer was characterized by FT-IR, XRD, SEM, TEM, VSM, TGA and XPS. The results showed that the sorbent exhibited good thermal and mechanical stability, and can be quickly separated from the solution by applying an external magnetic field. The adsorption performance indicated that the prepared imprinted material had a short adsorption equilibrium time (16 min) and a high adsorption capacity (35.31 mg g−1) for Ni(II) at an optimal pH of 6.0. The selectivity coefficients of the imprinted material were 17.57, 16.27, 10.86, 14.27 and 17.65 for Ni(II)/Co(II), Ni(II)/Cu(II), Ni(II)/Pb(II) Ni(II)/Cd(II), and Ni(II)/Zn(II), respectively. Reusability studies indicated that the adsorption capacity of the prepared polymer did not decrease significantly after repeated use ten times. Moreover, the adsorption mechanism of Ni(II) by the imprinted polymer was also studied. The adsorption process was spontaneous and endothermic, and followed the pseudo-secondary kinetic model and the Langmuir model. The results of the Scatchard model indicated the presence of two Ni(II) strong binding sites on Fe3O4@GO@IIP, where the single-bond O atom of the sulfonic acid group and the N atom of the –N–CO group in AMPS played a dominant role in Ni(II) adsorption, as conformed by both DFT calculations and XPS.
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Small
·
2022
·Vol. 18
·期 26
·2201996
·
IF 15.153
Tengfei Zhang,Hong Xiao,Xiao Liang,Fanchao Zhang,Huifeng Zhuang,Qiuming Gao,Lirong Zheng
A universal strategy is established for preparing the carbonaceous matrix-based atomically distributed metal catalysts M-BPC (M=Ni, Co, Fe, Cu, and Mn, and biomass-derived porous carbon (BPC)) by one-step pyrolysis of mixed metal salts and biomass alfalfa. The optimized Ni-BPC has dual-atom Ni(II) 2 N 4 (µ 2 -N) 2 moieties, which are chemically anchored on the alfalfa-derived developed porous N-doped carbon BPC matrix. An ultrahigh specific surface area of 3133 m 2 g −1 with huge total pore volume of 3.02 cm 3 g −1 is obtained for Ni-BPC. The Ni-BPC could greatly promote the redox kinetics and effectively prevent the shuttle effect of lithium polysulfides in a Li–S battery. The Li–S battery assembled with the Ni-BPC modified separator exhibits prominent rate performance with the reversible specific capacities of 1279, 1119, 1037, 948 and 787 mAh g −1 at the current densities of 0.1, 0.2, 0.5, 1 and 2 C, respectively. The battery presents an ultra-long life with low capacity decay of 0.028% per cycle up to 2100 cycles at 1 C. Even under high areal S loadings of 3.9 mg cm −2 , the high discharge capacity of 976.6 mAh g −1 is obtained at 0.2 C and excellent cycling stability with 61.1% capacity retention is achieved after 490 cycles.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2020
·
IF 2.726
Tao Chen,Jie Ding,Tianyu Liu,Qi Li,Yanping Luo,Longzhang Dong,Hongbin Du,Min Fang,Jianchun Bao,Yong Wu
A 3D, anionic novel porphyrinic metal-organic framework (PMOF) 1 having [NH 2 (CH 3 ) 2 ] + as counterions and Li + -exchanged version of 1 ( Li + -1 ) were synthesized. A very interesting feature of 1 and Li + -1 is their frameworks can change shape without breaking bonds, causing substantial changes of their PXRD patterns depending on what and how much is in the channels. Li + -1 has much larger surface area (Langmuir: 640 m 2 /g), compared with the 339 m 2 /g of PMOF 1 . The CO 2 adsorption capacities of 1 and Li + -1 are 38 (7.5 wt%) and 45 mL/g (8.9 wt%), respectively at 1 atm and 298 K, and 165–167 mL/g (33%) at 9.9 atm. They are direct-bandgap semiconductors with bandgaps of 1.56 (for 1 ) and 1.62 (for Li + -1 ) eV. The conduction and valence band-edge positions were determined in non-aqueous solutions as −0.29 and 1.27 ( 1 ), −0.32 and 1.30 V ( Li + -1 ) versus NHE. PMOF 1 or Li + -1 /Ru(bpy) 3 Cl 2 /TEA/CH 3 CN (bpy = 2,2-bipyridine, TEA = triethylamine) system photocatalytically reduce CO 2 to CO under visible light. PMOFs act as cocatalysts, and the photocatalysts were found to be the triplet excited state of Ru(bpy) 3 2+ ( Ru(II)∗ ) and its photodecomposition products. The TOFs contributed from PMOFs after 2 h were 0.091 and 0.097 h −1 (224 and 241 μmol g −1 h −1 ), respectively for 1 and Li + -1 , respectively. In addition, the Ru(bpy) 3 Cl 2 /TEA/CH 3 CN system were found to have an unprecedented high TOF of 0.31 h −1 (412 μmol g −1 h −1 ) when small amounts of H 2 O (200 μL H 2 O in 40 mL CH 3 CN and 10 mL TEA) was added.
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高影响因子
危险品化学品经营许可证（带存储）