DYES AND PIGMENTS
·
2013
·
IF 3.532
Yiqun Tan,Jiancan Yu,Junkuo Gao,Yuanjing Cui,Yu Yang,Guodong Qian
A new fluorescent and colorimetric probe based on the reaction and intramolecular charge transfer (ICT) effect is designed and synthesized. The probe responds rapidly toward hydrazine and exhibits distinct color changes from yellow to colorless, indicating its use as a color indicator for hydrazine. Moreover, the probe also shows a significant broad band fluorescence (410–700 nm) enhancement by ∼120-fold after the addition of hydrazine. With a detection limit as low as 0.11 ppb, the probe can detect hydrazine in a wide concentration range because of the blunted sensing functional group. The contrast test shows almost no interruption from common elements in water, suggesting the high selectivity of this probe toward hydrazine. The theoretical calculation based on density functional theory (DFT) is also performed and two different ICT modes are found. This hydrazine probe would be a promising candidate applicable in environment protection, water treatment and safety inspection.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2019
·
IF 2.931
Wenzhi Xu,Xue Li,Mengnan Han,Tingting Zhou,Yutao Yang,Wei Li
Hydrazine is extremely harmful to the human body. The leakage of hydrazine is liable to cause potential safety hazards. Here, we reported a new fluorescence probe based on the tandem reaction . The hydrazine-triggered hydrazinolysis-cyclization resulted in the formation of the iminocoumarin. The fluorescence intensity at 522 nm of the probe increased after the reaction with hydrazine. There was a linear relationship between the fluorescence intensity and the concentration of hydrazine (0.14–120.00 μM). The LOD of the probe to N 2 H 4 was 1.36 ppb. Notably, the probe could detect hydrazine in BT474 cells and tap water.
研究领域:
分析化学
·
环境科学
·
生物医学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xia Wei,Bing Fang,Tianyao Wang,Hongbin Dai,Song Li
Understanding the metal-support interaction between Rh-B and CeO 2 is essential for enhancing the efficiency of hydrogen generation from hydrous hydrazine. In this study, a series of Rh-B/CeO 2 catalysts were synthesized via a facile wet-chemical reduction method. The Rh-B/(CeO 2 ) 0.7 catalyst exhibits a remarkable 12-fold increase in turnover frequency (TOF) compared to pristine Rh-B catalyst. The strong electronic coupling between Rh-B and CeO 2 was identified as the primary factor driving this significant performance enhancement. This interaction facilitates the formation of oxygen vacancies, promoting hydrazine adsorption and subsequent cleavage of the N-H bond in N 2 H 4 * to form N 2 H 3 *. Our findings emphasize the pivotal role of support engineering in catalyst design for optimizing catalytic performance.
研究领域:
催化化学
·
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
Haoxue Tan,Zhonglong Wang,Xiaoqin Yang,Xiaoping Rao,Ping Zhao,Qian Jiang
Hydrazine (N 2 H 4 ) has been extensively utilized as a highly reactive chemical reagent. However, it is also seriously harmful to human beings and ecosystem. Thus, the development of an efficient detecting method for hydrazine is desirable. Here, caffeic acid was chose as starting material to synthesize a new ratiometric fluorescent probe HPA for detecting hydrazine. This probe possessed the specific recognition ability for hydrazine over other analytes with low detection limit (0.106 µM) and extremely short time (60 s). The sensing mechanism of probe HPA for hydrazine was proved by 1 H NMR titration and theoretical calculations. In addition, the probe HPA was loaded on paper strip for rapid quantitative detection of hydrazine with the aid of a software (Image J). The effective detecting performances of probe HPA for hydrazine were verified in environmental water samples as well as in living cells. Thus, HPA has great potential for detection and analysis of hydrazine in health supervision and environmental protection.
研究领域:
分析化学
·
环境科学
·
生物医学
✓ 已验证
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2019
·Vol. 6
·期 10
·2727-2735
·
IF 5.934
Xue Song,Pan Yang,Jingchuan Wang,Xiaochong Zhao,Yuanlin Zhou,Yintao Li,Lijun Yang
The exploration of highly efficient catalysts for the hydrolysis of hydrous hydrazine is of great significance for the achievement of future hydrogen economy. In this regard, herein, a catalyst with NiFePd loaded on the metal–organic framework (MOF) UiO-66 was successfully prepared by a simple and safe chemical impregnation method. Due to its high specific surface area, the as-prepared NiFePd/UiO-66 catalyst exhibited efficient catalytic performance for the generation of hydrogen from hydrous hydrazine in an alkaline solution. The results showed that the Ni0.25Fe0.25Pd0.5/UiO-66 catalyst exhibited optimal properties for the decomposition of hydrous hydrazine in an alkaline aqueous solution with a nearly 100% hydrogen selectivity, good activity, and the high total turnover frequency (TOF) value of up to 662.4 h−1 at 80 °C. Moreover, the Ni0.25Fe0.25Pd0.5/UiO-66 catalyst exhibited good durability, which slightly decreased after five cycles of catalytic reaction at 60 °C.
研究领域:
材料科学
·
催化化学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2015
·Vol. 18
·期 8
·2435-2442
·
IF 8.02
Chaofeng Zhang,Jianmin Lu,Mingrun Li,Yehong Wang,Zhe Zhang,Haijun Chen,Feng Wang
We present an experimental and computational study of the elementary steps of hydrazine hydrogen transfer on crystalline MoO2, and demonstrate its unique bifunctional metallic-basic properties in a catalytic hydrogenation reaction. Density functional theory (DFT) calculations suggest that the stepwise hydrogen transfer via the prior cleavage of the N–H bond rather than the N–N bond, is the key step to create the dissociated hydride and proton species on the dual Mo and O sites, marking its difference with common oxides. Crystalline MoO2 shows exceptionally high chemoselectivity toward the nitro reduction over CC, CC, and CN groups at room temperature and lower, down to 0 °C, rendering it as a promising catalytic material for hydrogenation reactions.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2022
·
IF 6.633
Lien Zhu,Chunhong Zhang,Feifan Qin,Fuqiu Ma,Changlong Bi,Ruiqi Zhu,Lijia Liu,Jianwei Bai,Hongxing Dong,Toshifumi Satoh
To efficiently and economically extract uranium from seawater, novel amidoxime-modified hypercrosslinked poly(styrene-co-acrylonitrile) (SAN) adsorbents with tunable porous structure were synthesized via simple Friedel-Crafts reaction followed by amidoximation. The adsorbent HCPSAN-B-AO obtained by using biphenyl dichlorobenzyl (BCMBP) as an additional crosslinking agent, possessed a larger pore size and higher surface area due to the longer and more rigid molecular structure of BCMBP compared to the original crosslinking agent 1,2-dichloroethane (DCE), resulting in the higher uranium adsorption capacity of HCPSAN-B-AO. Investigations on the adsorption performance in real seawater containing a large amount of interfering ions showed that the adsorbent owned excellent selectivity for uranyl ions, and the removal percentage of uranium could reach 84.4%. Furthermore, the adsorbent maintained good adsorption performance even after 5 adsorption–desorption cycles, indicating a good recyclability. Investigations on adsorption kinetics, thermodynamics, adsorption isotherms and adsorption mechanism manifested that the adsorption was a rapid (adsorption equilibrium within 30 min), spontaneous and chemical adsorption process (maximum adsorption capacity was 228 mg g −1 ), and the mechanism was mainly the interaction between uranyl ions and amidoxime groups. In summary, the as-prepared adsorbent was a feasible adsorbent for uranium extraction from seawater.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
LUMINESCENCE
·
2023
·Vol. 38
·期 2
·159-165
·
IF 2.9
Linlin Lv,Weiwei Luo,Yixiao Zhou,Tiechun Li,Quanping Diao,Pinyi Ma,Daqian Song
Hydrazine (N 2 H 4 ) is a highly toxic and harmful chemical reagent. Fluorescent probes are simple and efficient tools for sensitive monitoring of N 2 H 4 enrichment in the environment, humans, animals, and plants. In this work, a ratiometric fluorescent probe (FP-1) containing coumarin was used for hydrazine detection. The proposed FP-1 probe had a linear detection range of 0–250 μM and a limit of detection (LOD) of 0.059 μM (1.89 ppb). A large red Stokes shift was observed in fluorescence and UV–vis absorption spectra due to the hydrolysis of ester bonds between FP-1 and hydrazine. The hydrazine detection mechanism of FP-1 was also investigated using density functional theory (DFT) calculations. Finally, FP-1 could sensitively and selectively monitor hydrazine in actual water samples and BEAS-2B cells. Therefore, it has great application potential in environmental monitoring and disease diagnosis.
研究领域:
环境科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-13
·
IF 16.6
Zhu Libo,Huang Jian,Meng Ge,Wu Tiantian,Chen Chang,Tian Han,Chen Yafeng,Kong Fantao,Chang Ziwei,Cui Xiangzhi,Shi Jianlin
Substituting hydrazine oxidation reaction for oxygen evolution reaction can result in greatly reduced energy consumption for hydrogen production, however, the mechanism and the electrochemical utilization rate of hydrazine oxidation reaction remain ambiguous. Herein, a bimetallic and hetero-structured phosphide catalyst has been fabricated to catalyze both hydrazine oxidation and hydrogen evolution reactions, and a new reaction path of nitrogen-nitrogen single bond breakage has been proposed and confirmed in hydrazine oxidation reaction. The high electro-catalytic performance is attributed to the instantaneous recovery of metal phosphide active site by hydrazine and the lowered energy barrier, which enable the constructed electrolyzer using bimetallic phosphide catalyst at both sides to reach 500 mA cm −2 for hydrogen production at 0.498 V, and offer an enhanced hydrazine electrochemical utilization rate of 93%. Such an electrolyzer can be powered by a bimetallic phosphide anode-equipped direct hydrazine fuel cell, achieving self-powered hydrogen production at a rate of 19.6 mol h −1 m −2 .
研究领域:
电化学
·
催化
·
氢能
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2020
·
IF 5.339
Fanyong Yan,Hao Zhang,Xing Li,Xiaodong Sun,Yingxia Jiang,Yali Cui
According to the mechanism of hydrazine to ester bond elimination, a novel ratiometric fluorescent probe (FCP) based on the fluorescein-coumarin structure is designed and synthesized for detecting hydrazine. The obvious red shift in the absorption and fluorescence spectrum is caused by the hydrolysis of the ester bond of FCP by upon mixing with hydrazine. The proposed FCP probe is shown to have linear detection ranges from 0 to 250 nM for hydrazine, and LOD is 0.364 nM. In addition, this promising probe possesses high sensitivity and selectivity for monitoring the intracellular hydrazine, thus, has great potential to be applied in early diagnosis of disease. Meanwhile, it has been successfully applied to the detection and cell imaging of hydrazine in actual water samples.
研究领域:
生物化学
·
分析化学
·
医学影像
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL SCIENCES
·
2019
·Vol. 35
·期 2
·159-163
·
IF 1.618
Yue YALING,He YI
We report a visual chronometric method for the detection of copper(II) ions (Cu2+) using the clock reaction between methylene blue (MB) and hydrazine (N2H4). The addition of Cu2+ greatly accelerates the clock reaction due to the formation of the Cu cluster between Cu2+ and N2H4. By recording the change of the reaction time and solution color, different concentrations of Cu2+ in buffer and environmental water have been detected. As low as 300 nM Cu2+ can be visually identified by the naked eye without the assistance of any advanced instruments. This visual chronometric assay shows a dynamic range from 0.2 to 16 μM with a limit of detection of 20 nM. Additionally, it has good selectivity toward Cu2+ and against other common metal cations.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2018
·
IF 2.88
Xiao Wang,Yanmei Zhou,Chenggong Xu,Haohan Song,Xiaobin Pang,Xiaoqiang Liu
Hydrazine (N 2 H 4 ) and fluoride ion (F − ) are regarded as environmental pollutants and potential carcinogens. A dual-functional fluorescent probe (probe 1 ) was developed for both F − and N 2 H 4 with high selectivity and sensitivity. 1 was based on nucleophilic aromatic substitution reaction for N 2 H 4 detection and selective cleavage of 4-nitrobenzenesulphonyl group for the determination of F − . The limits of detection of probe for F − and N 2 H 4 were 77.82 nM and 29.34 nM, respectively, which are far below the threshold limit value (TLV) of United States Environmental Protection Agency (EPA). The home-made test strips of 1 provided the positive tool for F − and gaseous N 2 H 4 in different system. And the confocal fluorescence images indicated that 1 can quantitatively detect N 2 H 4 in living PC12 cells. Promisingly, 1 has great prospects for N 2 H 4 imaging and determining in living system.
研究领域:
分析化学
·
环境科学
·
生物医学
✓ 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）