Environmental Technology & Innovation
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2025
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IF 7.1
Yu He,Suqing Liu,Yan Zhou,Junping Wang
At present, with the development of society, different enterprises inevitably produce industrial wastewater and waste residue containing lead and copper. Therefore, there is an urgent need for a rapid and simple method to detect lead and copper in pollutants. In this paper, a metal-organic framework (MOF) doped with Eu(Ⅲ) (Eu 3+ /UiO-66-NH 2 ) was successfully prepared by one-pot hydrothermal technique. The probe is capable of detecting Pb 2+ and Cu 2+ with high sensitivity. Pb 2+ and Cu 2+ have detection ranges of 5–340 μM and 0.01–200 μM, respectively. The detection limit for Pb 2+ was as low as 1.01 μM, and the detection limit for Cu 2+ was 6.46 μM. This approach has a good detection performance when compared to the method described in the literature. It shows that the prepared sensor has great potential in the detection of actual lead and copper, and provides a practical and effective method for rapid and accurate detection of heavy metal ions.
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高影响因子
Nanoscale
·
2014
·Vol. 6
·期 8
·4361-4370
·
IF 6.739
Xijian Liu,Qian Wang,Chun Li,Rujia Zou,Bo Li,Guosheng Song,Kaibing Xu,Yun Zheng,Junqing Hu
A low-toxic difunctional nanoplatform integrating both photothermal therapy and chemotherapy for killing cancer cells using Cu2−xSe@mSiO2–PEG core–shell nanoparticles is reported. Silica coating and further PEG modification improve the hydrophilicity and biocompatibility of copper selenide nanoparticles. As-prepared Cu2−xSe@mSiO2–PEG nanoparticles not only display strong near infrared (NIR) region absorption and good photothermal effect, but also exhibit excellent biocompatibility. The mesoporous silica shell is provided as the carrier for loading the anticancer drug, doxorubicin (DOX). Moreover, the release of DOX from Cu2−xSe@mSiO2–PEG core–shell nanoparticles can be triggered by pH and NIR light, resulting in a synergistic effect for killing cancer cells. Importantly, the combination of photothermal therapy and chemotherapy driven by NIR radiation with safe power density significantly improves the therapeutic efficacy, and demonstrates better therapeutic effects for cancer treatment than individual therapy.
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OPTICAL MATERIALS
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2025
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IF 4.2
Mingguang Zhu,Lihui Yang,Xinyu Ye,Meihui Chen,Yuanbin Wu,Donghong Xie,Yue Yu,Yaohui You
A series of fluorescent Schiff bases were skillfully designed and efficiently synthesized through the condensation reaction of 2-hydroxy-4-methoxybenzophenone hydrazone with various aromatic aldehydes (benzaldehyde, p -chlorobenzaldehyde, p -tolualdehyde, and p -dimethylaminobenzaldehyde). Their structures were rigorously confirmed using a combination of spectroscopic techniques, including FT-IR, HR-ESI-MS, and 1 H/ 13 C NMR spectroscopy. Notably, photophysical investigations revealed that p -dimethylaminobenzaldehyde-functionalized Schiff base featured with excited-state intramolecular proton transfer (ESIPT) upon photoexcitation in various organic solvents, whereas the other derivatives did not. In particular, this derivative demonstrated remarkable fluorescence enhancement due to synergistic effect of ESIPT and aggregation-induced emission (AIE) during aggregation process. Conversely, the emission intensities of the other Schiff bases gradually quenched in THF/H 2 O mixed solvent as the water fraction ( f w ) increased from 0 to 90 %, attributed to the typical aggregation-caused quenching (ACQ) effect. Additionally, this derivative demonstrated superior solid-state fluorescence and dyeing performance compared to its counterparts. Furthermore, this derivative showed reversible HCl/NH 3 stimuli-responsive solid fluorescence and a selective fluorescence turn-off response to Cu 2+ . This study would provide valuable insights into the molecular engineering of functional fluorescence materials based on benzophenone hydrazone derivative.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2022
·
IF 6.364
Xiaohui Wu,Qin Zhang,Fangyi Huang,Xingyu Huo,Fuyu Li,Yuanxun Li,Hua Su
New low loss and low-sintering temperature co-fired Ba 3- x Cu x Ti 4 Nb 4 O 21 (BCTN, 0 ≤ x ≤ 0.12) ceramics with 0.60 wt % Li 2 O-B 2 O 3 -SiO 2 -CaO-Al 2 O 3 (LBSCA) glass were prepared by solid-state reaction methodology. This work showed that CuO and LBSCA were effective sintering aid, which improved the densification and decreased sintering temperature . Thus, the excellent microwave dielectric properties of BCTN ceramics ( x = 0.08) were obtained after sintering at 925 ℃ with ε r ~ 44.18, Q× f ~ 17,860 GHz (@ 5.6 GHz) and τ f ~ 94.76 ppm/℃. Q× f value was increased nearly 3-fold compared to pure BTN ceramics (~ 6090 GHz). Based on the P-V-L bond theory, the Ti-O and Nb-O bonds together contributed greatly to ε r . The Nb-O bonds was the main factor affecting the internal loss on Q× f . The τ f closely related to the oxygen octahedron [Ti1/Nb1O 6 ]. The BCTN ceramics would not react with Ag electrodes, and had great potential to be used in LTCC microwave devices.
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MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Lijuan Yang,Jing Zeng,Tian Quan,Shaochi Liu,Linlin Deng,Xun Kang,Zhining Xia,Die Gao
Oil red O was applied as precursor to synthesize nitrogen-doped carbon dots (NCDs) by a facile solvothermal method for the first time. Surprisingly, liquid–liquid extraction and purification resulted in the quantum yield (QY) of NCDs up to 68%. The purification mechanism is based on the difference in polarity and solubility between precursor, over-carbonized substances and NCDs. Further, optical properties and structure characterizations of NCDs were characterized by ultraviolet (UV) spectroscopy, fluorescence (FL) spectroscopy, transmission electron microscopy (TEM), Fourier-transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). Importantly, NCDs can be acted as an outstanding multi-functional sensing platform for Cu 2+ and tetracycline antibiotics (TCs). Compared with other coexisting metal ions and antibiotics, this platform showed special responses to Cu 2+ and TCs. NCDs showed high selectivity and sensitivity of fluorescence response to Cu 2+ over a broad range of 10 nM −50 μM and a satisfactory detection limit (LOD)of 4 nM. Besides, NCDs also showed high sensitivity for the detection of TCs with a LOD range of 50 pM-100 nM. In addition, the fluorescent quenching mechanism of Cu 2+ and TCs to NCDs were identified as IFE and static quenching. Finally, the platform was successful applied to detect Cu 2+ and TCs in actual samples (e.g., water, milk, urine) with satisfactory results. All results indicated that NCDs appeared to have tremendous potential for Cu 2+ and TCs detection in various fields.
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高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2013
·
IF 4.612
Mei Zhang,Jun-Hui Zhang,Yan Zhang,Bang-Jin Wang,Sheng-Ming Xie,Li-Ming Yuan
This study focused on exploring the chromatographic characteristic of a homochiral MOF [Cu 2 ( d -Cam) 2 (4,4′-bpy)] n with 3-D six-connected self-penetrating architectures for the separations of positional isomers and chiral compounds. Some effects such as mobile phase composition, column temperature, and analytes mass for separations on this chiral column also have been investigated. Among thirteen tested racemates, six compounds, namely three alcohols, a diol, a naphthol and a ketone were successfully discriminated, and ten useful positional isomers which have never been separated on other MOFs stationary phases in HPLC except dichlorobenzene and cresol isomers, were also analyzed by this chiral stationary phase. The results indicated that [Cu 2 ( d -Cam) 2 (4,4′-bpy)] n exhibited good selectivity for positional isomers and enantiomers. Therefore, it is practicable that the separation of positional isomers and enantiomers are carried out on the chiral MOF column.
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PubMed
高影响因子
Materials Today Nano
·
2026
·
IF 7.6
Liangyun Yu,Lingling Huang,Rui Na,Meng Yuan,Zhaoyong Luo,Qi Zhang,Baocai Xu,Qin Xu
Developed crystal phase-tunable Cu-TiO 2 @g-C 3 N 4 with excellent photoelectric property. • Synergistic MIP-heterojunction system enabled efficient recognition of DOP. • The DOP sensor exhibited a very wide linear range and a femtomolar detection limit. • The new sensor has been successfully applied to detect DOP in the real samples. Di-n-octyl phthalate (DOP), a pervasive endocrine-disrupting contaminant in food packaging, plastic products, and aquatic systems, poses severe threats to ecosystem stability and human health. This work proposed a novel molecularly imprinted polymer (MIP)-integrated photoelectrochemical (PEC) sensing strategy for ultra-selective detection of DOP based on a rationally designed crystal phase tunable Cu 2+ -doped TiO 2 @g-C 3 N 4 composite. By lattice-doping TiO 2 with Cu 2+ to generate impurity energy levels, it was possible to precisely tune its band structure and narrow its bandgap. Subsequently, the obtained Cu-TiO 2 was hybridized with two-dimensional g-C 3 N 4 through energy-level matching, forming a tightly coupled structure at the heterojunction, which had strong interactions and thus opened up directional charge separation and transport channels. The precisely controlled heterogeneous and interfacial properties of the Cu-TiO 2 @g-C 3 N 4 matrix were confirmed through characterization methods such as SEM, TEM, HRTEM, XPS and XRD. The fabricated sensor achieved an extremely wide linear detection range of 10 fM to 1 nM, with an ultra-low limit of detection down to 5.30 fM, alongside exceptional anti-interference capability and practical reliability in real sample assays. This study delivered a low-cost, easily miniaturized PEC-MIP platform for trace DOP monitoring, opening up a new high-performance approach for on-site food safety screening and environmental water quality assessment.
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高影响因子
Journal of Environmental Chemical Engineering
·
2024
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IF 7.4
Yujin Xing,Shicheng Liu,Wenzhong Wang,Yujie Liang,Junli Fu,Qing Zhou,Lijuan Wang,Shimeng Huang
This study demonstrates for the first time the potential of the novel combination of aluminum (Al) doping and amino functionalization to drastically enhance the adsorption capacity of nanosheet-assembled hierarchical calcium silicate hydrate (CSH) architectures for heavy metal Pb 2+ and Cu 2+ ions in aqueous solution. The designed and prepared amino-functionalized Al-doped CSH (CASH-NH 2 ) exhibits excellent adsorption capability to adsorb Pb 2+ and Cu 2+ ions. The maximum adsorption capacity of Pb 2+ and Cu 2+ ions is 911 and 509 mg g −1 , respectively, which is much higher than that of pure CSH and other relative CSH-based adsorbents. The experimental measurements of cation exchange capacity (CEC) and surface composition discover that the adsorption of Pb 2+ and Cu 2+ ions on CASH-NH 2 is preponderantly achieved by the cation exchange and surface complexation, in which Al doping substantially enhances the exchange capacity between Ca 2+ of CSH and Pb 2+ or Cu 2+ , and the functional amino groups chelate Pb 2+ or Cu 2+ to realize surface complexation of CASH architectures. Thereby the excellent adsorption performance of CASH-NH 2 is attributed to the significant enhancement in the CEC between Ca 2+ of CASH and Pb 2+ or Cu 2+ , and the amino functionalization-induced surface complexation of the CASH, which are achieved by the synergistic effect of Al doping and amino functionalization. This work opens a new way for simultaneously exploiting metal doping and amino functionalization to boost the adsorption performance of other adsorbents to achieve highly efficient removal of toxic cationic species from polluted water.
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高影响因子
ACS ES&T Water
·
2023
·
IF 5.3
Zhenhao Wang,Mubing Li,Ben Zhang,Yuliang Ye,Tao Yang,Hui Zeng,Xiliang Luo
The design and construction of antifouling sensing interfaces have been widely concerned due to the matrix effect of the complex environment and nonspecific adsorption at the electrode interface. However, it is challenging to ensure the long-term stability of an antifouling sensing interface during real sample detection. Herein, an interface construction strategy based on covalent bonds is proposed for striking enhancement of the long-term antifouling ability of a sensing interface based on a vertically ordered mesoporous silica film (VMSF) and a biobased antifouling material─chondroitin sulfate (CS). The covalent linkage of VMSF with CS (named VMSF-g-CS/GCE) could strengthen the long-term hydrophilicity and biocompatibility of VMSF/GCE. As expected, the VMSF-g-CS/GCE exhibited excellent long-term antifouling performances, which is a promising candidate sensing platform to be applied to long-term monitoring. Alternatively, the VMSF-g-CS/GCE exhibits a better enrichment effect to Cu2+ than VMSF/GCE and VMSF-CS/GCE (without covalent bonds). Therefore, VMSF-g-CS/GCE exhibited a current response toward Cu2+ within the scope of 0.1–0.8 μM, with a limit of detection (LOD) of 20.58 nM. The proposed design strategy offers an idea for the precise regulation of antifouling sensing surfaces, and the resulting high-performance sensing platform is attractive for in situ detection of Cu2+.
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高影响因子
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