SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Guifen Lu,Siyuan Yu,Suci Meng,Xiaochun Wang,Juan Jiang,Dianqi Zhang,Luyao Duan
Here, a corrole-based dual-responsive fluorescent probe DPC-DNBS was rationally designed and synthesized for the separate detection of hydrazine (N 2 H 4 ) and hydrogen sulfide (H 2 S) with high selectivity and sensitivity. The probe DPC-DNBS is intrinsically none fluorescent due to PET effect, however, addition of increasing amount of N 2 H 4 or H 2 S to DPC-DNBS turned on an excellent NIR fluorescence centered at 652 nm and thereby provided a colorimetric signaling behavior. The sensing mechanism was verified by HRMS, 1 H NMR and the DFT calculations. Common metal ions and anions do not interfere with the interactions of DPC-DNBS with N 2 H 4 or H 2 S. Furthermore, the presence of N 2 H 4 does not affect the detection of H 2 S; however, the presence of H 2 S interferes with the detection of N 2 H 4 . Hence, quantitative detection of N 2 H 4 must occur in an H 2 S-free environment. The probe DPC-DNBS displayed some fascinating merits in separate detection of these two analytes, including large Stokes shift (233 nm), fast response (15 min for N 2 H 4 , 30 s for H 2 S), low detection limit (90 nM for N 2 H 4 , 38 nM for H 2 S), wide pH range (6–12) and outstanding biological compatibility. Significantly, DPC-DNBS was utilized to detect hydrazine in real water, soil and food samples. And its favorable performances for separate detection N 2 H 4 and H 2 S were successfully demonstrated in HeLa cells and zebrafish, indicating its value of practical application in biology.
研究领域:
化学
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生物学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Bioengineering and Biotechnology
·
2022
·
IF 6.064
Liu Xina,Zhu Meiqing,Xu Chenyang,Fan Fugang,Chen Panpan,Wang Yi,Li Dongyang
As an inorganic small molecule pollutant, the toxicity and potential carcinogenicity of hydrazine (N2H4) are of increasing concern. In this work, A water-soluble fluorescent probe (OCYB) based on the intramolecular charge transfer (ICT) mechanism for the detection of hydrazine was designed and synthesized. Taking the advantage of 4-bromobutyryl as the recognition group, the high selectivity of OCYB to N2H4 was confirmed by steady-state fluorescence spectroscopy. The limit of detection (LOD) was calculated to be 78 nM in the DMSO-HEPES (pH 7.4) system. The detection mechanism was verified by NMR, HRMS and density functional theory (DFT) calculations. In addition, OCYB exhibits strong anti-interference ability and an “Off-On” fluorescence enhancement effect. Importantly, OCYB can be used to effectively monitor the fluorescence distribution of N2H4 in environmental water samples and organisms.
研究领域:
分析化学
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环境科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Analytical Methods
·
2023
·Vol. 15
·期 7
·944-950
·
IF 3.1
Wenzhan Yu,Qian Li,Liqiong He,Renlong Zhou,Lifu Liao,Jinhua Xue,Xilin Xiao
Camphor leaves were used as the precursor for the hydrothermal synthesis of carbon quantum dots. The preparation method is simple and rapid, and the raw material is environmentally friendly and easy to obtain. Without additional modification, the carbon quantum dots were used as fluorescent probes for the sensitive and selective detection of Fe3+ and isoniazid at different excitation wavelengths. For Fe3+, at the excitation wavelength of 320 nm, the ratio of fluorescence intensity of CQD solution after adding Fe3+ to CQD solution without Fe3+ addition, F/F0, and Fe3+ concentration showed a good linear relationship in the range of 2.72 × 10−5 to 1.00 × 10−4 mol L−1 (R2 = 0.9912), and the limit of detection was 8.16 μmol L−1. For isoniazid, at the excitation wavelength of 270 nm, the ratio of fluorescence intensity of CQDs solution with isoniazid to CQDs solution without isoniazid, F/F0, and isoniazid concentration showed good linear relationships in the range of 3.81 × 10−6 to 1.00 × 10−5 mol L−1 (R2 = 0.9941) and 1.00 × 10−5 to 2.10 × 10−4 mol L−1 (R2 = 0.9910) respectively, and the limit of detection was 1.14 μmol L−1. A fluorescence method for the determination of Fe and isoniazid content was proposed. The method has been used to detect iron in iron supplement tablets and isoniazid in isoniazid tablets with satisfactory results.
研究领域:
分析化学
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药物分析
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Donghua Jin,Ying Wang,Dalei Song,Jiahui Zhu,Jing Yu,Qi Liu,Jingyuan Liu,Rumin Li,Peili Liu,Jun Wang
Uranium adsorption from seawater can provide a sustainable development path for the future raw material supply of nuclear energy. However, in the process of uranium extraction from seawater, biofouling adheres to the surface of the adsorbent, wasting the adsorption sites and seriously affecting the adsorption capability of the adsorbent. Herein, inspired by the superanti-biofouling property of guanidine groups, a superantibacterial and knitted adsorbent with guanidine and amidoxime groups cografted on natural bamboo strips (G-AOBS) is synthesized to adsorb uranium from simulated seawater. The intrinsic structure of bamboo is not destroyed by the whole grafting process, and G-AOBS still maintains the porous and cellulose crystalline structure. The grafting of guanidine groups improves the hydrophilicity and significantly enhances the anti-biofouling performance, thereby increasing the adsorption capacity for uranium (q e = 201.4 ± 13.23 mg g −1 at pH = 4 with C 0 = 100 mg L −1 and q e = 1.04 ± 0.12 mg g −1 in simulated seawater with C 0 = 500 μg L −1 ). According to the results of DFT, the guanidine and amidoxime groups can not only replace one carbonate in uranyl tricarbonate alone to form a more stable coordination structure but also have a synergistic effect between the two, that is, using three “bridging hydrogen bonds” to form the most stable chelation mode with uranyl dicarbonate.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Jing-yi Jiang,Qingyi Li,Wen-chang Wang,Xiao-hui Chen,Zhi-dong Chen
A novel, rapid, and facile electrochemiluminescence sensor which based on carboxylated acetylene black / Ru(bpy) 3 2+ / nafion modified glass carbon electrode (CAB/Ru(bpy) 3 2+ /NAF/GCE) was developed for detecting isoniazid (INH). The CAB/Ru(bpy) 3 2+ /NAF/GCE expresses an efficient electrochemiluminescence response for INH, because of the brilliant luminous efficiency of Ru(bpy)32+ and admirable electronic transmission of acetylene black. The electrochemiluminescence intensity was quenched significantly with addition of INH. Under the optimal conditions, the sensor for the detection of isoniazid exhibits a wide linear range of 1.0 × 10 -6 ~ 1.0 × 10 -3 mol·L -1 with the detection limit of 5.0 × 10 -7 mol·L -1 . The sensor is expected to be a simple and convenient method for the determination of INH in pharmaceutical samples .
研究领域:
分析化学
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药物分析
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Shuang-Shuang Liu,Wei-Na Wu,Xiao-Lei Zhao,Yun-Chang Fan,Yuan Wang,Zhi-Hong Xu
The microenvironments of biological systems are associated with the pathology of organisms. This study, aimed to construct a hemicyanine-based probe ( 1 ), which can respond to mitochondrial viscosity and hydrazine (N 2 H 4 ), for imaging application in living cells and zebrafish. The probe showed no fluorescence due to the intramolecular rotation in the solution; however, it exhibited a strong emission at 730 nm when the molecules were restricted to a high-viscosity environment. The addition of N 2 H 4 caused an elimination reaction of the N-substituted group in the pyridinium part and further broke the C C bond to produce a highly fluorescent hydrazone . Also, the probe could selectively and quantitatively detect N 2 H 4 via the fluorescence enhancement at 510 nm in a concentration range of 0 μM–140μM, with the limit of detection being 0.0485 μM. This probe may be used to study diseases related to N 2 H 4 and viscosity changes in biological systems. Furthermore, the analysis methods based on probe 1 for N 2 H 4 detection in soil, water, and air samples were successfully established.
研究领域:
生物化学
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环境科学
·
医学影像
✓ 已验证
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Jiajun Shi,Haoxue Tan,Zhonglong Wang,Xiaoqin Yang,Xiaoping Rao,Ping Zhao,Qian Jiang
Hydrazine (N 2 H 4 ) and bisulfite (HSO 3 – ) detection methods are urgently needed due to its harmful to the human health and environment safety. Herein, we reported a dual-response fluorescence probe EPC , which is capable of sequential detection of N 2 H 4 and HSO 3 – by two different fluorescence signals. The probe EPC itself showed yellow florescence. In presence of N 2 H 4 , probe EPC exhibited an obviously fluorescence change (from yellow to green). However, a new addition product came into being after probe EPC mixed with HSO 3 – , followed with weak yellow emission. More important, probe EPC exhibited excellent fluorescence response properties for N 2 H 4 and HSO 3 – , such as high sensitivity (0.182 µM for N 2 H 4 , 0.093 µM for HSO 3 – ), rapid response (55 s for N 2 H 4 , 45 s for HSO 3 – ), excellent selectivity and anti-interference performance. The sensing mechanisms for N 2 H 4 and HSO 3 – were proved by 1 H NMR and MS spectra. Practical applications were studied. EPC based test paper can be utilized for quantitative detecting N 2 H 4 in actual water samples. And, probe EPC has been successfully applied to recognize N 2 H 4 contaminant in soil samples. Moreover, EPC has great potential to be used to detect HSO 3 – in real food samples.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2020
·
IF 4.613
Wenfang Liu,Haishuang Jia,Jie Zhang,Ling Shao,Jun Wang,Dawei Fang
In this work, a novel dual-excitation and dual-emission fluorescent probe , CDs–COO–Fluorescein (CDs–COO–F), for the specific detection of hydrazine (N 2 H 4 ) was designed and synthesized through esterification reaction of carbon dots (CDs) and fluorescein (F). The prepared CDs were characterized by TEM, XPS , XRD and FT-IR and the optical properties of CDs and CDs–COO–F were described by UV–vis and fluorescence spectra. On the other hand, the affecting factors including hydrazine (N 2 H 4 ) concentration and interfering substances on the hydrazine (N 2 H 4 ) detection were researched. The high sensitivity and high selectivity of CDs–COO–F in detection hydrazine (N 2 H 4 ) could be confirmed. Two good linear responses of fluorescence emission intensities of CDs–COO–F at 462 nm and 515 nm as functions of hydrazine (N 2 H 4 ) concentration were obtained, respectively. The limits of detection hydrazine (N 2 H 4 ) were 0.504 μM and 0.269 μM under 370 nm and 480 nm excitation wavelength lights, respectively. The detecting mechanism of hydrazine (N 2 H 4 ) by CDs–COO–F was deduced from the experimental results. Cell imaging and cytotoxicity experiments of CDs–COO–F were measured. The experiment results show that the fluorescent probe CDs–COO–F can be applied to detect hydrazine (N 2 H 4 ) in aqueous solution and living cells.
研究领域:
分析化学
·
生物医学
✓ 已验证
DOI
高影响因子
RADIOCHIMICA ACTA
·
2022
·Vol. 110
·期 5
·311-322
·
IF 2.083
Yun Zhou,Huai-Xin Hao,Tian-Hao Dong,Xu-Feng Ni,Yi-Chen Hu,Jia-Ju Ma,Jun-Qiang Yang,Ke-Liang Shi,Guo-Jian Duan,Tong-Huan Liu
With the rapid development of nuclear energy, how to safely and efficiently dispose of radioactive waste solution has become an urgent environmental problem of public concern. It is of great significance to construct a new type of high-efficiency adsorbent material to recover uranium from nuclear waste solution. In this work, the Ti 3 C 2 T x material (an emerging two-dimensional inorganic layered material) with a stable layered structure was used as the matrix, and the amidoxime functionalized MXene composite material (PAO/Ti 3 C 2 T x ) was synthesized by in-situ polymerization. The amidoxime-functionalized Ti 3 C 2 T x showed excellent capacity to capture U(VI), with a maximum adsorption capacity of 98.04 mg/g at 25 °C, which was significantly better than that of Ti 3 C 2 T x , and the adsorption selectivity for U(VI) was greatly improved. The adsorption was conformed to Langmuir isotherm model and pseudo-second-order kinetic model. In addition, the adsorbed UO22+ could be effectively desorbed by 0.1 M HNO3, and the adsorption performance of PAO/Ti 3 C 2 T x did not decrease significantly after 5 adsorption/desorption cycles. The results of ionic strength experiment, FT-IR, SEM, and XPS jointly indicated that adsorption mechanism of U(VI) on PAO/Ti 3 C 2 T x was the combined effect of the amidoxime group and -O and -OH active groups on the surface of Ti 3 C 2 T x , mainly inner complexation. These advantages make PAO/Ti 3 C 2 T x composite a highly potential U(VI) adsorbent with great application prospects.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 11
·2857
·
IF 5.076
Hui Wang,Qing Dong,Lu Lei,Shan Ji,Palanisamy Kannan,Palaniappan Subramanian,Amar Prasad Yadav
Structural engineering is an effective methodology for the tailoring of the quantities of active sites in nanostructured materials for fuel cell applications. In the present study, Co nanoparticles were incorporated into the network of 3D nitrogen-doped carbon tubes (Co@NCNTs) that were obtained via the molten-salt synthetic approach at 800 °C. Morphological representation reveals that the Co@NCNTs are encompassed with Co nanoparticles on the surface of the mesoporous walls of the carbon nanotubes, which offers a significant active surface area for electrochemical reactions. The CoNPs/NCNTs-1 (treated with CaCl2) nanomaterial was used as a potential candidate for the electro-oxidation of hydrazine, which improved the response of hydrazine (~8.5 mA) in 1.0 M NaOH, as compared with CoNPs/NCNTs-2 (treated without CaCl2), NCNTs, and the unmodified GCE. Furthermore, the integration of Co helps to improve the conductivity and promote the lower onset electro-oxidation potential (−0.58 V) toward the hydrazine electro-oxidation reaction. In particular, the CoNPs/NCNTs-1 catalysts showed significant catalytic activity and stability performances i.e., the i-t curves showed notable stability when compared with their initial current responses, even after 10 days, which indicates the significant durability of the catalyst materials. This work could present a new approach for the design of efficient electrode materials, which can be used as a favorable candidate for the electro-oxidation of liquid fuels in fuel cell applications.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 10
·4574-4579
·
IF 3.5
Jinxing Hou,Kaifeng Mei,Tongtong Jiang,Xinxin Yu,Mingzai Wu
Hydrazine-assisted electrochemical water splitting is an important avenue toward low cost and sustainable hydrogen production, which can significantly reduce the voltage of electrochemical water splitting. Herein, we took a simple approach to fabricate NiFeP nanosheet arrays on nickel foam (NiFeP/NF), which exhibit superior electrocatalytic activity for the hydrogen evolution reaction (HER) and the hydrazine oxidation reaction (HzOR). Our investigations revealed that the excellent electrocatalytic activity of NiFeP/NF mainly arises from the bimetallic synergistic effect, abundant electrocatalytically active sites facilitated by the porous nanosheet morphology, high intrinsic conductivity of NiFeP/NF and strong NiFeP–NF adhesion. We assembled a hydrazine-boosted electrochemical water splitting cell using NiFeP/NF as a bifunctional catalyst for both electrodes, and the overall hydrazine splitting (OHzS) exhibits a considerably low overpotential (100 mV at 10 mA cm−2), and is stable for 40 h continuous electrolysis in a 1 M KOH + 0.5 M N2H4 electrolyte. When it is applied to hydrogen production by seawater electrolysis, its catalytic activity shows strong tolerance. This work provides a promising approach for low cost, high-efficiency and stable hydrogen production based on hydrazine-assisted electrolytic seawater splitting for future applications.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Shu-Hua Han,Dan-Dan Huang,Zhang-Jian Cheng,Ai-Lin Liu,Yun Lei
Most known chemiluminescence (CL) systems are flash-type that generate weak luminescence and decline quickly after dozens of seconds, while the glow-type CL systems have stable emission for an extended period to achieve accurate quantitation. In this work, a long-term CL system based on hydrazine-hydrate (N 2 H 4 ·H 2 O) modified carbon quantum dots (N-CQDs) as a luminescent probe, with K 2 S 2 O 8 and H 2 O 2 as co-reactants, was proposed. The CL emission enhanced by H 2 O 2 increased 18-fold more than that of N-CQDs and K 2 S 2 O 8 direct reaction, and decayed by 5% of the maximum intensity over 700 s. In the reaction system, K 2 S 2 O 8 and H 2 O 2 co-reactants can promote each other to continuously generate corresponding radicals (•OH, O 2 •− , 1 O 2 ), which in turn trigger the CL emission of N-CQDs. This phenomenon was identified as the primary cause for the production of persistent CL. In addition, a stable and selective CL sensor based on the N-CQDs-K 2 S 2 O 8 -H 2 O 2 CL enhancing system was developed for ascorbic acid quantitation in the linear range from 0.1 to 10.0 mM with a detection limit of 0.036 mM. The method has been applied to the analysis of tablet samples and holds potential in pharmaceutical analysis field.
研究领域:
分析化学
·
材料科学
✓ 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）