ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2020
·Vol. 27
·期 21
·26621-26630
·
IF 3.056
Wan Jun,Chen Lin,Li Qiang,Ye Yuxuan,Feng Xiaonan,Zhou Aijiao,Long Xuejun,Xia Dongsheng,Zhang Tian C.
Among the Cu(II) removal methods, adsorption is a favorable technique and has attracted large attention because of its effectiveness and low cost. In quest of seeking for a favorable adsorbent with a high Cu(II) adsorption capacity and excellent reusability, researchers have paid much attention to hydrogels with three-dimensional networks. In this study, a novel hydrogel (P(AMPS-co-VDT) hydrogel) based on free-radical polymerization was synthesized with ionic monomer sodium 2-acrylamido-2-methylpropane sulfate (AMPS-Na + ) and 2-vinyl-4, 6-diamino-1, 3, 5-triazine (VDT) and applied for Cu(II) adsorption in aqueous solutions. The hydrogel was characterized for swelling performance, surface morphology, functional groups, thermal gravimetric behavior, and elements. The maximum Cu(II) adsorption capacity (175.75 mg/g) was relatively high compared with other hydrogels. The P(AMPS-co-VDT) hydrogel also was found to have a relatively good Cu(II) desorption and reuse behavior. The adsorption mechanism could be chelation and ion exchange. This work provides a new hydrogel for effective Cu(II) removal in the future.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yalin Ran,Junfeng Hu,Yuanyuan Chen,Zhenan Rao,Jichun Zhao,Zhigang Xu,Jian Ming
Nanoscale drug delivery systems derived from natural bioactive materials accelerate the innovation and evolution of cancer treatment modalities. Morusin (Mor) is a prenylated flavonoid compound with high cancer chemoprevention activity, however, the poor water solubility, low active pharmaceutical ingredient (API) loading content, and instability compromise its bioavailability and therapeutic effectiveness. Herein, a full-API carrier-free nanoparticle is developed based on the self-assembly of indocyanine green (ICG), copper ions (Cu 2+ ) and Mor, termed as IMCNs, via coordination-driven and π-π stacking for synergistic tumor therapy. The IMCNs exhibits a desirable loading content of Mor (58.7 %) and pH/glutathione (GSH)-responsive motif. Moreover, the photothermal stability and photo-heat conversion efficiency (42.8 %) of IMCNs are improved after coordination with Cu 2+ and help to achieve photothermal therapy. Afterward, the released Cu 2+ depletes intracellular overexpressed GSH and mediates Fenton-like reactions, and further synergizes with ICG at high temperatures to expand oxidative damage. Furthermore, the released Mor elicits cytoplasmic vacuolation, expedites mitochondrial dysfunction, and exerts chemo-photothermal therapy after being combined with ICG to suppress the migration of residual live tumor cells. In vivo experiments demonstrate that IMCNs under laser irradiation could excellently inhibit tumor growth (89.6 %) through the multi-modal therapeutic performance of self-enhanced chemotherapy/coordinated-drugs/ photothermal therapy (PTT), presenting a great potential for cancer therapy.
研究领域:
药学
·
肿瘤学
·
纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Yintao Li,Jianwen Wei,Linlin Geng,Dongling Zhao,Xiaobin Zhou
The treatment of copper laden wastewater, particularly from the electroplating industry with the Cu(II) ion concentration ranging from 100 to 300 mg/L, presents a significant challenge for achieving stringent discharge standards. This study reports the synthesis of a pore-expanded core-shell adsorbent with remarkable Cu(II) adsorption performance, accompanied by the electronic-scale investigation of its structure and behavior. This kind of adsorbent both enhances mass transfer and provides abundant chelating sites. It showed superior adsorption performance (122.55 mg/g at 318 K) which originates fundamentally from the electronic heterogeneity of its interfacial coordination environments. By integrating density functional theory (DFT) calculations with X-ray photoelectron spectroscopy (XPS), we systematically decouple the roles of distinct adsorption sites and quantify their electronic interactions with Cu(II). DFT reveals a broad distribution of adsorption energies (−1.650 to −5.989 eV) across three primary coordination modes. Our findings demonstrate that the high adsorption capacity stems from the coexistence of multiple site types: stable multidentate sites enable high metal loading, while electronically active sites with strong charge transfer ability facilitate rapid kinetics. Beyond the specific application, the synergistic strategy of pore-expanded structure and the atomic-scale mechanistic understanding established provide a paradigm for the rational design of advanced adsorbents.
✓ 已验证
DOI
高影响因子
Journal of Chemistry
·
2020
·Vol. 2020
·期 1
·5496712
·
IF 1.79
Yingying Zhao,Linchuan Zhan,Zhongjun Xue,Kianpoor Kalkhajeh Yusef,Hongxiang Hu,Mengjun Wu
Natural macromolecule adsorbing materials are alternatives for remediation of heavy metals’ polluted waters. In this study, sodium alginate composite gel (SACL) was synthesized from sodium alginate (SA), polyethylene glycol oxide (PEO), and nanomaterials to remove wastewater Cu (II) and Cd (II). The adsorption efficiency of SACL was analysed in relation to the contact time, initial concentrations of metal ions, temperature, adsorbent dosage, and solution pH. Three models, i.e., kinetic model, isothermal adsorption model, and thermodynamic model, were used to fit the experimental data. Our results showed that the highest removal rates of Cu (II) and Cd (II) from wastewater were 96.8% and 78%, respectively, under the condition of the best liquid-solid ratio of 12.5 ml·g −1 , and the contact time of 180 min (25°C). Overall, the SACL adsorption of Cu (II) and Cd (II) was spontaneous. The adsorption kinetics and the isothermal adsorption were fitted well with the pseudo-second-order kinetic equation and Langmuir equation, respectively. Combined with SEM-EDS and FTIR analysis, results suggested that SACL adsorbs wastewater Cu (II) and Cd (II) mainly through chemical reaction on its surface area. Altogether, this work concludes on SACL as an efficient and ecofriendly adsorbent for wastewater Cu (II) and Cd (II).
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2013
·
IF 0.917
Hui LI,De-li XIAO,Hua HE,Rui LIN,Peng-li ZUO
Amino-functionalized magnetic nanoparticle (NH 2 -MNP) were prepared by a sol-gel approach. The adsorption behavior of Cu(II) ions on NH 2 -MNP was discussed systematically by batch experiments. The effects of initial Cu(II) ions concentration, time, pH and temperature were investigated. In kinetic studies, the pseudo-second-order model was successfully employed, and the pseudo-first-order model substantiated that Cu(II) adsorption on NH 2 -MNP was a diffusion-based process. Langmuir model and Dubinin-Radushkevich model ( R 2 >0.99) were more corresponded with the adsorption isotherm data of Cu(II) ions than Freundlich model. The adsorption capacity was increased with the increment of temperature and pH. NH 2 -MNP remains excellent Cu(II) recoveries after reusing five adsorption and desorption cycles, making NH 2 -MNP a promising candidate for repetitively removing heavy metal ions from environmental water samples. According to the results obtained from adsorption activation energy and thermodynamic studies, it can be inferred that the main adsorption mechanism between absorbent and Cu(II) ions is ion exchange-surface complexation.
研究领域:
环境化学
·
纳米材料
·
重金属去除
·
吸附科学
✓ 已验证
DOI
高影响因子
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
·
2026
·
IF 1.5
Gao R.,Hong R. Y.,Hong H. L.,Liang C. Z.,Jiao Z. Z.,Jin S. W.,Li Z. Z.,Wang D. Q.
Three novel isonicotinamide(inic)-based Cu(II) complexes [Cu(inic) 2 (cbba) 2 ] (inic is isonicotinamide, cbba is 2-( p -chlorobenzoyl)benzoate) ( 1 ), [Cu(inic) 2 (mpa) 2 ] (mpa is 4-methoxyphenylacetate) ( 2 ), and [Cu(inic) 2 (tmca) 2 (H 2 O)] 2 ⋅CH 2 Cl 2 (tmca is 3,4,5-trimethoxycinnamate) ( 3 ) have been acquired by the injection of the carboxylates as the auxiliary ligands and characterized by using the X-ray crystallography, together with the elemental analysis, FT-IR, and thermogravimetric analysis techniques. In all the complexes, the Cu(II) ions are coordinated through two monodentate carboxylates to the two anions, forming approximately a plane. Each Cu(II) ion is then coordinated with the pyridine N atom of the inic molecules that behave as the monodentate ligands. The amide groups of the inic create the H-bonds with other amide and carboxylate residues, engendering a molecular crystal with the three-dimensional H-bond arrangement of the mononuclear units. The X-ray diffraction studies displayed that these complexes possessed mononuclear structures with the square planar/square-pyramidal coordination modes at the Cu(II) ions. The pair of the complementary N–H···O H-bonds between the amides of the inic molecules were set up in compounds 1 and 3 , making the dimer motif of inic, while there found the catemer motif of the inic molecules through using the intermolecular single N–H···O H-bond between the CONH 2 in 2 . The CH–O contacts derived from the py CH of the inic molecules were built in all the compounds. The intricate intra- and intermolecular classical H-bonds, O–C, O–O, Cl–Cl, CH 3 –CH/CH–CH, CH 3 –C, CH–O/CH 2 –O/CH 3 –O, CH–Cl/CH 3 –Cl, C–π, O–π, CH–π, and π–π associates are elucidated by using the X-ray crystallographic studies, driving the isolated complexes into the high-dimensional ordered supramolecular structures.
✓ 已验证
DOI
高影响因子
ACS Omega
·
2026
·
IF 5.2
Zai Dong,Xichang Wu,Tianhua Yu,Chaochan Li,Heng Zhang,Jie Wang,Armin Rezayan,Anping Wang
This study aims to improve the removal efficiency of heavy metal ions from wastewater. We utilized agricultural residues derived from Camellia oleifera shell and combined them with zeolitic imidazolate frameworks (ZIFs) precursors for synergistic modification. By introducing active components such as Zn and Co in situ using chemical reagents, followed by pyrolysis, co-carbonization, and KOH activation treatments, we prepared nine types of functionalized biochar (BCX-T). Their structural characteristics and adsorption performance toward Cu(II) and Cd(II) were systematically characterized. The results showed that BC8-500 exhibited an adsorption capacity of 31.61 mg/g for Cu(II), a 2.1-fold increase compared to unmodified biochar; BC9-500 exhibited an adsorption capacity of 111.43 mg/g for Cd(II), a 6.4-fold increase. The adsorption process was primarily driven by chemical adsorption and multilayer adsorption. The removal of Cu(II) by BC8-500 was mainly achieved through complexation, whereas the removal of Cd(II) by BC9-500 was primarily achieved through CdCO3 precipitation. This study provides a theoretical basis for the effective utilization of agricultural and forestry residues, as well as for the mitigation and management of environmental pollution.
✓ 已验证
DOI
PubMed
高影响因子
Polymers
·
2020
·Vol. 12
·期 3
·577
·
IF 3.426
Qiaoling Wang,Kaimin Chen,Yi Qu,Kai Li,Ying Zhang,Enyu Fu
Currently, it is an ongoing challenge to develop fluorescent nanosphere detectors that are uniform, non-toxic, stable and bearing a large number of functional groups on the surface for further applications in a variety of fields. Here, we have synthesized hairy nanospheres (HNs) with different particle sizes and a content range of carboxyl groups from 4 mmol/g to 9 mmol/g. Based on this, hairy fluorescent nanospheres (HFNs) were prepared by the traditional coupling method (TCM) or adsorption-induced coupling method (ACM). By comparison, it was found that high brightness HFNs are fabricated based on HNs with poly (acrylic acid) brushes on the surface via ACM. The fluorescence intensity of hairy fluorescent nanospheres could be controlled by tuning the content of 5-aminofluorescein (5-AF) or the carboxyl groups of HNs easily. The carboxyl content of the HFNs could be as high as 8 mmol/g for further applications. The obtained HFNs are used for the detection of heavy metal ions in environmental pollution. Among various other metal ions, the response to Cu (II) is more obvious. We demonstrated that HFNs can serve as a selective probe and for the separation and determination of Cu(II) ions with a linear range of 0–0.5 μM and a low detection limit of 64 nM.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Hong Zhang,A.M. Omer,Zhaohong Hu,Li-Ye Yang,Chao Ji,Xiao-kun Ouyang
In this work, composite hydrogel beads based on magnetic bentonite/carboxymethyl chitosan/sodium alginate (Mag-Ben/CCS/Alg) were fabricated and their ability to adsorb copper ions in water was studied. The structure and properties of the composite were characterized via SEM, FTIR, XPS, TGA , VSM, and Zeta potential tests. The effects of the adsorbent dosage, adsorption time, pH, temperature, and initial concentration of Cu(II) on the adsorption results were studied. The results showed that Mag-Ben/CCS/Alg reached equilibrium after 90 min of adsorption, the removal rate of Cu(II) was 92.62 ± 0.39%, and the maximum adsorption capacity was 56.79 mg/g (30 °C). The removal rate of Cu(II) by Mag-Ben/CCS/Alg still remained above 80% after recycling four times. The adsorption process of Cu(II) by Mag-Ben/CCS/Alg occurred in accordance with the quasi-second-order kinetic model and Langmuir adsorption isotherm. The adsorption process was spontaneous and endothermic.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2020
·Vol. 23
·期 2
·282-291
·
IF 3.117
Lingyao Wang,Tao Jiang,Simon Duttwyler,Yuanbin Zhang
A new family of weakly coordinating dodecaborate anion hybrid supramolecular Cu(II)–dipyridyl frameworks BSF-n (n = 61, 71, 72, 73, 74, 75) was synthesized and characterized by single crystal analysis. BSF-61 exhibits a 3D porous structure with a planar Cu(II)–dipyridyl network and closo-[B12H11I]2− pillars. In the structures of BSF-71, 72, 73, 74, and 75, the dipyridyl ligand interlinked Cu(II) centers were coordinated with solvent molecules (acetone, MeOH or water) or hydroxyl groups instead of closo-[B12Cl12]2− anions due to their extremely weakly coordinating nature. Bulk synthesis of closo-[B12Cl12]2− hybrid materials under stirring conditions afforded distinct structures. Notably, one material synthesized in MeOH was porous after activation and can be applied for selective C2H2/C2H4 and C2H2/CO2 separations.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2019
·
IF 2.931
Yu Zhu Yang,Na Xiao,Yu Yan Cen,Jing Rong Chen,Shi Gang Liu,Yan Shi,Yu Zhu Fan,Nian Bing Li,Hong Qun Luo
Copper is an essential mineral nutrient for the human body. However, excessive levels of copper accumulated in the body can cause some diseases. Therefore, it is great significant to establish a sensitive bioprobe to recognize copper ions (Cu 2+ ) in vivo. In our work, nitrogen-doped carbon dots (N-CDs) and gold nanoclusters (Au NCs) are selected as luminescent nanomaterials and the Au NCs/N- CDs nanohybrids is successfully synthesized by coupling method. The Au NCs/N-CDs exhibited characteristic dual-emission peaks at 450 and 620 nm when excited by a single-wavelength of 380 nm. When different amounts of Cu 2+ are introduced, the fluorescence intensity of the Au NCs is gradually weakened and fluorescence intensity of the N-CDs is almost unchanged, which can facilitate the visual detection of Cu 2+ . The Au NCs/N-CDs nanohybrid possesses good selectivity to Cu 2+ with a limit of detection (LOD) is 3.5 μM and linear detection range of 10–150 μM. Visualization detection of Cu 2+ is implemented by using nanoprobe in water samples. Furthermore, the ratiometric nanoprobe is utilized to the toxicity test of liver cancer cells, indicating excellent biocompatibility and low toxicity. This nanoprobe has been used to the intracellular fluorescence imaging. Moreover, this method is expected to be used to monitor the changes of Cu 2+ concentration in hepatocytes.
研究领域:
分析化学
·
生物医学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Shidong Dai,Nana Prempeh,Dagang Liu,Yimin Fan,Mingyue Gu,Yu Chang
With the increasing demand of environmental monitoring for toxic and odorous ammonia gas it is desired to develop specific green, cost-effective and in situ passive colorimetric alternatives to current complex instrumentations. In this work, we designed an ammonia gas sensor based on cholesteric liquid crystal films of copper(II)-doped cellulose nanocrystals (CNC Cu(II)) whose structure, optical and sensing properties were investigated. The hybrid films using the low doping Cu(II) as a color-tuning agent inherited the chiral nematic signature and optical activity of CNCs, suggesting a strong chelation between copper ions and negatively charged CNCs. The sensing performance illustrates that the CNC Cu(II)125 film was sensitive to ammonia gas which could merge into nematic layers of CNCs and trigger-sensed to copper ions chelated on CNCs, consequently arousing a red-shift of reflective wavelength as well as an effective colorimetric transition. Such a hybrid film is anticipated to boost a new gas sensing regime for fast and effective on-site qualitative investigations.
研究领域:
材料科学
·
环境科学
·
化学传感
✓ 已验证
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）