JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2017
·Vol. 17
·期 7
·4733-4739
·
IF 1.483
Wu Huixiang,Huo Danqun,Jiang Hailong,Dong Liang,Ma Yi,Hou Changjun,Fa Huanbao,Yang Mei,Luo Xiaogang,Li Junjie,Shen Caihong
Aminotriazole is among the most popular carbamates herbicide that are widely used to boost food production, and its residues pose a great threat to human health and the environment. Herein, we presented a new colorimetric sensor for the detection of aminotriazole residues based on the
aggregation of glutathione functionalized gold nanoparticles (GSH-AuNPs). The AuNPs were synthesized by the reduction of chloroauric acid (HAuCl4 · 4H2O) via trisodium citrate (C6H5Na3O7 · 2H2O) and
characterized by UV-visible spectrometer and TEM. And GSH-AuNPs were prepared using simple green one-pot method. Determination of aminotriazole were carried out under optimal detection condition based on the aggregation of AuNPs induced by the synergistic effects of electrostatic interaction,
hydrogen bond and size selectivity between GSH and aminotriazole, which gave the clear color and UV-vis spectrum change. The sensor showed good ability of anti-disturbance and displayed wide linear relationship with aminotriazole concentrations varying from 0.59 to 21.40 μM with
low detection limit of 0.27 μM. The recovery in the spiked cabbages and apples were measured to be between 91.96% and 105.90%. These preliminary results demonstrate that as-prepared AuNPs sensor would be a promising candidate for fast aminotriazole analysis in real application.
研究领域:
分析化学
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环境科学
·
食品科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Zhihui Cheng,Chengwang Wang,Dongyuan Miao,Hua Ni,Yaoguo Huang,Ming Wang,Linlin Chen,Yali Zhang
Malachite is considered to be the most desirable copper-bearing mineral to develop in response to the increased costs of mining copper sulfide ores such as chalcopyrite. The surface of malachite readily forms a water film, resulting in poor floatability. Additionally, its association with calcite and quartz makes achieving selective flotation challenging. Therefore, the design and optimization of collector structure play a crucial role in effectively floating malachite. In this article, a double coordination structure amino-triazole-thione collector, 3-isobutylxanthic acid methyl ester-4-amino-1,2,4-triazole-5-thione (MiBuXATT), was first synthesized and used in malachite flotation separation from calcite and quartz. The flotation separation mechanism was studied by a series of surface and interface characterization analysis methods. Micro-flotation experiments, contact angle measurement, ζ-potential analysis, UV, FTIR and XPS spectra analyses show that MiBuXATT can selectively adsorb the copper active site on the surface of malachite by forming MiBuXATT-Cu(I) surface compound, and achieve selective hydrophobic enrichment. Concurrently, the theoretical calculations further substantiated that MiBuXATT exhibits enhanced adsorption on the malachite surface in its negative ion form.
研究领域:
矿物加工
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表面化学
·
浮选化学
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材料科学
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DOI
高影响因子
ACS Sensors
·
2021
·
IF 7.711
Guangyan Liu,Jun Ling,Jianping Li
A molecularly imprinted electrochemiluminescence sensor was prepared for sensitive and selective determination of aminotriazole via a novel strategy of multiple Ru(bpy)3Cl2 probes released from liposomes immobilized by a light-triggered click reaction. This sensing strategy provides a platform for trace detection of amino-containing pesticides. The target on the molecularly imprinted membrane connected to the Ru(bpy)3Cl2-encapsulated liposomes via the click reaction. After the destabilizing agent Triton X-100 was added, numerous Ru(bpy)3Cl2 molecules were released by liposomes on the molecularly imprinted polymer electrode. The ECL response of the sensor was linearly proportional to the logarithm of the aminotriazole concentration ranging from 5.00 × 10–18 to 1.00 × 10–12 mol/L, and the detection limit was 1.15 × 10–18 mol/L. The sensitivity of the detection was significantly improved, and the analysis process was simplified.
研究领域:
分析化学
·
生物传感技术
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Zhihui Cheng,Xingshi Li,Shuo Jiao,Dongyuan Miao,Xiaojie Yu,Hua Ni,Yuyue Geng,Ming Wang,Yaoguo Huang,Yali Zhang
A novel 3-lauramide propyl ester-4-amino-1,2,4-triazole-5-thione modified polyacrylic acid resin (LmPATT-reD113), comprising a bi-ligand amide-based triazole-thione moiety and a carboxylic acid moiety, was prepared and employed for the effective removal of Cu(II) from wastewater. The adsorption experiments demonstrated that the maximum adsorption capacity of LmPATT-reD113 for Cu (II) was 191.94 mg/g, which was 3.03 times higher than that of the polyacrylic acid resin (D113). LmPATT-reD113 and D113 had penetration times of 200 and 150 min, and equilibrium times of 1000 and 675 min, respectively. Column adsorption results showed LmPATT-reD113 outperformed D113. After four adsorption–desorption cycles, LmPATT-reD113 maintained superior performance with a desorption efficiency of 93.23 %. The adsorption kinetics and thermodynamics showed that LmPATT-reD113 to Cu(II) followed the pseudo-second-order kinetic and Langmuir isotherm models, with Δ H , Δ S , and Δ G values of 24.836 kJ/mol, 102.187 J/(mol·K) and −3.092kJ/mol at 298.15 K, respectively. Moreover, the adsorption mechanism was investigated using X-ray photoelectron spectroscopy (XPS) and density-functional theory (DFT), the results showed that the affinity of LmPATT-reD113 for Cu(II) mainly originated from the formation of five-membered rings by C=S and C–N complexed with Cu(II) and the formation of porous structure by O=C–NH molecules through intermolecular hydrogen bonding to promote the adsorption of copper.
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DOI
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 8
·1-7
·
IF 5.479
Li Younan,Luo Guoyan,Qing Zhihe,Li Xiaoxuan,Zou Zhen,Yang Ronghua
A colorimetric and visual assay is described for the herbicide aminotriazole (ATZ). It is based on the etching of gold nanorods (AuNRs) by iodine which is formed on oxidation of iodide via H 2 O 2 . Longitudinal etching of the AuNRs occurs quickly and is accompanied by a color change from dark blue to red. In the absence of ATZ and the presence of active catalase (CAT), H 2 O 2 is quickly decomposed into water, and the AuNRs will not be etched. In the presence of ATZ, CAT is partially deactivated, and this affects the amount of available H 2 O 2 and, consequently, of the iodine. Hence, the color is significantly changed. The color changes can be easily detected with bare eyes. The assay has a linear response in the 5 to 70 μM concentration range, with a detection limit of 1.3 μM and high selectivity for ATZ. It was applied to the determination of ATZ in water and food samples.
A multicolor colorimetric method is developed for aminotriazole (ATZ) detection based on catalase (CAT) deactivation-dependent longitudinal etching of gold nanorods (AuNRs). The color signals can be visually identified. Good detection performances and capability for evaluating ATZ level in water and food samples is demonstrated.
研究领域:
分析化学
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环境科学
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Junliang Dong,Yueyuan Yu,Yuxin Pei,Zhichao Pei
The rational integration of chemotherapy and hydroxyl radical (·OH)-mediated chemodynamic therapy (CDT) via functional metal–organic frameworks (MOF) carriers has great potential in cancer therapy. In this work, aminotriazole (3-AT) doped polyhedral metal organic frameworks (denoted as MAF) were prepared by template ligand replacement, where CDT was initiated by Cu 2+ /Cu + modulated Fenton reaction and enhanced by effectively regulating the catalase activity with 3-AT. However, a rod-like Cu-MOF with 3-AT served as a ligand was obtained by the hydrothermal method without using template. In contrast to Cu-MOF, pH-responsive MAF was chosen as the carrier for targeted drug delivery due to its higher drug load of 17.6% and relatively uniform size, where doxorubicin (DOX) as a model drug was loaded in its cavity and hyaluronic acid (HA) was coated on its surface via electrostatic interactions (denoted as [email protected] ). In vitro experiments demonstrated that [email protected] had high transport efficiency of DOX, effective regulation of catalase (CAT) activity and enhanced cytotoxicity to HepG2 cells. This work is the first use of enzyme inhibitors as ligands to construct functional MOFs via template ligand replacement for effective regulating enzyme activity, mediating intracellular redox homeostasis and enhancing CDT efficacy, which provides a feasible strategy for the construction the functional MOFs in cancer therapy.
研究领域:
癌症治疗
·
纳米技术
·
材料科学
·
药学
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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）