ANALYTICAL SCIENCES
·
2018
·Vol. 34
·期 11
·1297-1302
·
IF 1.355
Wang Hao,Wu Xiaoming,Tao Feiyan,Yang Shaoxiang,Tian Hongyu,Liu Yongguo,Sun Baoguo
A new highly selective and visible colorimetric fluorescent probe (probe 1) was developed to detect hydrazine (N2H4) concentration in real water samples. As different concentrations of N 2 H 4 were added, the color of the probe solution was graded gradually from colorless to pink, which could be observed by the naked eye under UV light at 365 nm. Our research indicates that probe 1 offers a certain practical significance for use as a visible detection agent to detect N2H4 efficiently by distinct color response. Furthermore, our work showed that probe 1 can be successfully applied to detect N2H4 concentrations in real water samples.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Ziyin Yang,Xiaohui Zheng,Jianbin Zheng
It is highly attractive to design and construct a novel enzyme-free electrode for sensitive and selective detection of hydrazine (N 2 H 4 ). In this paper, for the first time, porous MnCo 2 S 4 sphere was used as an excellent electrocatalyst for N 2 H 4 oxidation, which was synthesized through a facile hydrothermal method. The experiment results revealed that porous MnCo 2 S 4 sphere was constructed from interconnected nanoparticle with a three-dimensional porous structure. Electrochemical measurements demonstrate that the presence of MnCo 2 S 4 reduced the overpotential and accelerated kinetics of N 2 H 4 oxidation. The sensor based on porous MnCo 2 S 4 sphere exhibited an excellent performance for N 2 H 4 analysis with a wide linear range of 0.5 μM–4.78 mM, a high sensitivity of 1495.7 μA mM −1 cm −2 , a low detection limit of 0.33 μM (S/N = 3). Moreover, the application of the sensor for detection of N 2 H 4 in tap water samples was demonstrated, which indicates that MnCo 2 S 4 can be employed as the efficient material for electrochemical sensing of N 2 H 4 .
研究领域:
材料科学
·
分析化学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Lin-Lin Hou,Ye Wan,Jia-Yin Li,Jun-Rui Zhang,Keying Cui,Su-Juan Li
NiAu bimetallic nanostrips with nearly monodispersed structure were synthesized through a one-step electrodeposition method with cetyltrimethylammonium bromide (CTAB) involved as the stabilizer and Ni(NO3)2 and HAuCl4 with a molar ration of 1:1 as the precursor. The morphology of as-prepared NiAu bimetallic nanomaterials with different Ni/Au molar rations were characterized with scanning electron microscopy (SEM). The resultant NiAu bimetallic nanostrips showed good electrocatalytic activities toward hydrazine oxidation. Various parameters including Ni/Au molar rations, CTAB concentration and solution pH affecting the performance of NiAu bimetallic nanomaterials toward hydrazine detection were investigated. Under optimized conditions, NiAu bimetallic nanostrips based electrochemical hydrazine sensor has a linear response in the concentration range of 0.5 to 1665 pM, a lower detection limit of 0.1 pM and high detection sensitivity (1007 pA mM -1 cm -2 ). Most common ions and many environmental organic species do not interfere with the detection of hydrazine.
研究领域:
材料科学
·
电化学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Xin Tang,Shan Zhao,Jiaying Wu,Zhiyuan He,Yu Zhang,Ke Huang,Zhirong Zou,Xiaoli Xiong
It is necessary to efficient detection hydrazine in food . Exploring highly sensitive, low-cost and fast response electrochemical hydrazine sensing methods has been a challenge in this field. In this paper, a conformal transformation method is used to prepare rose flower-like NiCo-LDH derivating from the bimetallic NiCo-MOFs, and the N 2 H 4 sensing platform with a large electrocatalytic area, high conductivity and good stability was constructed. Based on the synergy between Ni and Co and the remarkable catalytic activity of the rough 3D flower-like structure, the N 2 H 4 sensor has a linear response in the concentration range of 0.001–1 mmol/L and 1–7 mmol/L, with a sensitivity of 5342 μA L mmol −1 cm −2 and 2965 μA L mmol −1 cm −2 (S/N = 3), respectively, and low limit of detection of 0.043 μmol/L. This study opens a new door for the successful application of electrochemical sensors to detect N 2 H 4 in real food samples.
研究领域:
材料科学
·
分析化学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2019
·Vol. 21
·期 3
·1-11
·
IF 2.009
Qin Ju,Zhang Limei,Yang Rui
In this paper, a novel fluorescence carbon dots (FCDs) were proposed to use folic acid as the sole reactant via the pyrolytic way. The gotten FCDs were uniform in size distribution and had an excitation-independent emission feature, and their fluorescence quantum yield was 39.09%. Without additional modification, the acquired FCDs could be used to detect isoniazid by the fluorescence quenching pattern. The reaction mechanism was the synergy of the internal filtration effect and the static quenching effect. The linear range of the detection of isoniazid was 4.0–140 μM, and the detection limit was 1.15 μM. Therefore, the method for the determination of isoniazid was put forward. The method was applied to the detection of isoniazid in isoniazid tablets with the recovery rates of 98.12 to 102.67%, and the results were satisfactory.
研究领域:
分析化学
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药物分析
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Xin-Ran Guo,Yan-Xin Guo,Juan Chen,Xin-Yue Chen
In this work, a simple and sensitive ratiometric fluorescence probe to detect isoniazid (INH) was developed on the basis of carbon dots and MnO 2 nanosheets (MnO 2 NS). Nitrogen-doped carbon dots (FMT-CDs) were synthesized by microwave method using formononetin (FMT) in ammonia water. The oxidase-like activity of MnO 2 NS was utilized to oxidize non-fluorescent o -phenylenediamine (OPD) to 2, 3-diaminophenazine (DAP) with orange fluorescence. It was demonstrated that DAP could effectively quench the fluorescence of FMT-CDs through the inner filtering effect (IFE). Due to the reducing nature of INH, MnO 2 NS was decomposed and thus lost its oxidase-like activity after the addition of INH. Therefore, the production of DAP was reduced, and the fluorescence intensity was decreased, while IFE on FMT-CDs was weakened and the fluorescence of FMT-CDs was recovered. Based on the above principle, a sensitive method for the detection of INH was established based on the fluorescence intensity ratio of the two fluorescent substances, FMT-CDs and DAP, and was successfully applied to the detection of INH in human urine samples. The limit of detection (LOD) could reach to 0.16 μM in human urine samples.
研究领域:
分析化学
·
医学诊断
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2020
·
IF 5.339
Yu-Fang Wei,Meng-Xiang Wu,Xue-Rui Wei,Ru Sun,Yu-Jie Xu,Jian-Feng Ge
Two probes based on tetrahydroxanthylium unit (probe 1a ) and methyltetrahydroxanthylium unit (probe 1b ) were designed and synthesized for the detection of hydrazine. Probes 1a–b exhibited turn-on red emission signal and high selectivity toward NH 2 NH 2 . The response time of probe 1a to NH 2 NH 2 was more than 60 min, while that of probe 1b was less than 30 min. The detection limits of probes 1a–b were calculated as 210 nM and 110 nM respectively. What's more, the tolerance experiments showed that methyltetrahydroxanthylium unit possessed higher tolerance toward nucleophiles . Moreover, cells imaging experiments demonstrated that probe 1b could detect exogenous NH 2 NH 2 in living HeLa cells.
研究领域:
分析化学
·
生物医学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 42
·16478-16489
·
IF 3.069
Wenfang Liu,Bingqiang Wang,Haishuang Jia,Jun Wang,Youtao Song
Based on the esterification of 2-(2-hydroxyphenyl)benzothiazole (HBT) and a rare-earth metal ion complex EuIII-dtpa, a novel dual-excitation fluorescence probe, EuIII-dtpa-bis(HBT), was developed for the detection of hydrazine (N2H4). The structure of dtpa-bis(HBT) was characterized via FT-IR and NMR, and its optical properties were studied via UV-vis absorption and fluorescence spectroscopy. Influencing factors including solution acidity, interfering substances and N2H4 concentrations were considered for the detection of N2H4 using EuIII-dtpa-bis(HBT). EuIII-dtpa-bis(N2H4) and HBT emit significant fluorescence at 470 nm (λex = 270 nm) and 480 nm (λex = 325 nm), respectively. The detection limit of EuIII-dtpa-bis(HBT) with N2H4 was 0.283 μM (14 ppb) and 0.182 μM (9 ppb) upon excitation at 270 nm and 325 nm, which is close to and lower than the EPA standard (10 ppb), respectively. The mechanism for the detection of N2H4 by EuIII-dtpa-bis(HBT) was deduced from the experimental results and theoretical calculations. Also, cytotoxicity and cell imaging experiments of EuIII-dtpa-bis(HBT) were performed. The experimental results showed that the fluorescent probe EuIII-dtpa-bis(HBT) can be applied to detect N2H4 in aqueous solution and living cells.
研究领域:
分析化学
·
生物医学工程
·
环境科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Yongbin Zhang,Yongfei Huang,Yongkang Yue,Jianbin Chao,Fangjun Huo,Caixia Yin
Because of the high toxicity of hydrazine, the development of ultrasensitive fluorescent probes for hydrazine has been challenging. In this work, an ultrasensitive fluorescent probe based on o -phthalaldehyde has been exploited for hydrazine. The probe was designed based on creating an efficient fluorophore by incorporating hydrazine into o -phthalaldehyde framework via an intermolecular condensation-cyclization reaction. The probe could quickly detect hydrazine and displayed a high sensitivity for hydrazine with a LOD of 1.9 nM (0.06 ppb), which is far below the U.S. Environmental Protection Agency standard (10 ppb). Moreover, the probe was successfully applied to the detection of hydrazine in real water samples and hydrazine vapor.
研究领域:
分析化学
·
环境监测
·
生物传感
·
分子探针
·
毒理学
✓ 已验证
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2021
·
IF 4.051
Denghui Li,Lian Liu,Honggao Yang,Jie Ma,Huiling Wang,Jiamin Pan
A novel-fluorescent sensor named TPAPI, is designed and constructed successfully. In DMSO/H 2 O (pH = 7.4) system, the TPAPI sensor demonstrates two different fluorescent responsive properties with the water volume fraction ( f w ): At 90%, the TPAPI shows an aggregation induced emission (AIE) effect around 670 nm, and can be used as a turn-off sensor; Meanwhile, at 10%, based on the fluorescent property of titration product, the aggregation caused quenching (ACQ) type fluorescent sensor can be constructed around 470 nm with LOD at 1.37 × 10 −7 mol·L −1 . The TPAPI sensor exhibits outstanding selectivity, anti-interference for hydrazine among thirty molecules and ions. The sensing mechanism is attributed to the formation of hydrazone (TPAP-N 2 H 4 ), confirmed by LC-MS. Theoretical calculations further confirm TPAPI molecules possess AIE property and TPAP-N 2 H 4 has the ACQ character. In addition, the TPAPI test strip can be prepared and applied successfully for the detection of N 2 H 4 .
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
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Wenda Wang,Zhenting Zhao,Qian Lei,Hongyan Xu,Jie Hu,Lin Chen
A highly sensitive gold nanoparticles (AuNPs) functionalized hierarchical layered NiCo 2 O 4 nanosheets/NiCo 2 O 4 nanowires (NCSs/NCWs) core–shell structures is proposed toward hydrazine detection using hydrothermal and electrodeposition methods. Various techniques were used to investigate the morphology, crystalline structure and chemical compositions of as-synthesized AuNPs@NCSs/NCWSs sample. The electrochemical performances of the as-prepared hydrazine sensors were evaluated by optimization different experimental parameters including growth time of nanowire and electrodeposition time of AuNPs. The as-proposed AuNPs-180@NCSs/NCWSs hydrazine sensor exhibits excellent electrochemical properties to hydrazine detection, including high sensitivity (14.36 μA·μM −1 ·cm −2 ), good linear range (0.8–499.8 μM), low detection limit (0.23 μM) and superior performance for real sample determine, which can be ascribed to the synergistic effects between the NiCo 2 O 4 nanosheets/NiCo 2 O 4 nanowires core–shell arrayed structures and AuNPs. Therefore, the as-synthesized hierarchical layered double NiCo oxide/core–shell nanostructure is a promising candidate for the highly sensitive sensing material of the electrochemical sensor.
研究领域:
材料科学
·
电化学
·
纳米技术
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 45
·21151-21159
·
IF 3.591
Jiamin Pan,Jie Ma,Hui Liu,Yuxin Zhang,Luyu Lu
In this work, based on the N-phenyl carbazole fluorescent group, a new molecule named 2-(4-(9-phenyl-9H-carbazol-3-yl)benzylidene)-1H-indene-1,3(2H)-dione (PCBI) is firstly synthesized and used as a fluorescent probe for detecting N2H4 in aqueous solutions. The PCBI probe exhibits an excellent aggregation-induced emission (AIE) effect with a good fluorescence response to N2H4 in a DMF–H2O (fw = 90%) system. A fitting curve between the fluorescence intensity at 628 nm of probe and the concentration of N2H4 shows excellent linear in the range of 0–6 × 10−6 mol L−1. Meanwhile, the PCBI probe exhibits good sensitivity and selectivity. Based on the density functional theory, the sensing mechanism of this probe is attributed to a change of the molecular aggregation state and an induced charge transfer (ICT) effect from group conversion. The PCBI test strip can be applied successfully to detect N2H4 rapidly in water.
研究领域:
化学
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）