iScience
·
2023
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IF 5.8
Ying Zhang,Yuying Wan,Xiaoxu Liu,Kai Chen,Ke Chu
Electrocatalytic reduction of nitrite to ammonia (NO 2 RR) is considered as an appealing route to simultaneously achieve sustainable ammonia production and abate hazardous nitrite pollution. Herein, atomically Nb-doped NiO nanoflowers are designed as a high-performance NO 2 RR catalyst, which exhibits the highest NH 3 -Faradaic efficiency of 92.4% with an NH 3 yield rate of 200.5 μmol h -1 cm -2 at -0.6 V RHE. Theoretical calculations unravel that Nb dopants can act as Lewis acid sites to render effective NO 2 - activation, decreased protonation energy barriers, and restricted hydrogen evolution, ultimately leading to a high NO 2 RR selectivity and activity.
研究领域:
材料科学
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环境科学
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催化化学
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DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2018
·Vol. 410
·期 18
·4519-4526
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IF 3.307
Du Jiayan,Zhao Mengxin,Huang Wei,Deng Yuequan,He Yi
We report a molybdenum oxide (MoO 3 ) nanomaterial-based three-input logic gate that uses Sn 2+ , NO 2 − , and H + ions as inputs. Under acidic conditions, Sn 2+ is able to reduce MoO 3 nanosheets, generating oxygen-vacancy-rich MoO 3− x nanomaterials along with strong localized surface plasmon resonance (LSPR) and an intense blue solution as the output signal. When NO 2 − is introduced, the redox reaction between the MoO 3 nanosheets and Sn 2+ is strongly inhibited because the NO 2 − consumes both H + and Sn 2+ . The three-input logic gate was employed for the visual colorimetric detection of Sn 2+ and NO 2 − under different input states. The colorimetric assay’s limit of detection for Sn 2+ and the lowest concentration of NO 2 − detectable by the assay were found to be 27.5 nM and 0.1 μM, respectively. The assay permits the visual detection of Sn 2+ and NO 2 − down to concentrations as low as 2 μM and 25 μM, respectively. The applicability of the logic-gate-based colorimetric assay was demonstrated by using it to detect Sn 2+ and NO 2 − in several water sources.
研究领域:
分析化学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2018
·
IF 6.042
Xialing Qin,Fan Li,Yifan Zhang,Gongcheng Ma,Tao Feng,Yongxiang Luo,Peng Huang,Jing Lin
Photoacoustic detection is an emerging noninvasive and nonionizing detection technique with the merits of rich contrast, high resolution, and deep tissue penetration, especially for in vivo detection and imaging. Herein, we developed a photoacoustic (PA) molecular imaging probe (denoted as nanonaps) composed of a naphthalocyanine dye and a heptamethine dye as the internal standard with unchanged signals at 860 nm and the sensing component with peroxynitrite (ONOO–) target-decreased signals at 775 nm, respectively. The as-prepared nanonaps displayed high sensitivity and specificity of ONOO– both in vitro and in vivo. The PA860/PA775 ratio was increased as a function of the concentration of ONOO– (0–250 nM). More interestingly, our ratiometric nanonaps could be used for in vivo detection and imaging of ONOO–.
研究领域:
生物医学工程
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分子影像学
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产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
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IF 1.5
Juan Liu,Wenju Weng,Chunxiao Yin,Guiling Luo,Hui Xie,Yanyan Niu,Xiaoyan Li,Guangjiu Li,Yaru Xi,Yutong Gong,Shuyao Zhang,Wei Sun
In this paper zinc-based metal organic framework material (ZIF-8) modified carbon ionic liquid electrode (CILE) was prepared and electrodeposited with gold nanoparticles to get a composite modified electrode, which was used as the sensing interface for the immobilization of hemoglobin (Hb) with Nafion to prepare a modified electrode (Nafion/Hb/Au/ZIF-8/CILE). Electrochemical behaviors of Hb on the modified electrode were checked by cyclic voltammetry with a pair of well-defined redox peaks appeared. The effects of pH and scan rate on direct electrochemistry of Hb were studied with electrochemical parameters calculated. The prepared electrochemical enzyme sensor showed good catalytic activity to the electroreduction of bromate and nitrite with the linear ranges from 0.5 to 10.0 mmol/L and from 0.1 to 0.8 mmol/L, respectively. The detection limits were calculated as 0.83 mmol/L and 0.03 mmol/L, and the water samples were analyzed to prove the practical application.
研究领域:
生物化学
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分析化学
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产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2018
·
IF 2.88
Fengyuan Zhang,Xinyue Zhu,Zhijuan Jiao,Xiaoyan Liu,Haixia Zhang
An uncontrolled increase of nitrite concentration in groundwater, rivers and lakes is a growing threat to public health and environment. It is important to monitor the nitrite levels in water and clinical diagnosis. Herein, we developed a switch-off fluorescence probe (PyI) for the sensitive detection of nitrite ions in the aqueous media. This probe selectively recognizes nitrite ions through a distinct visual color change from colorless to pink with a detection limit of 0.1 μM. This method has been successfully applied to the determination of nitrites in tap water, lake water and Yellow River water with recoveries in the range of 94.8%–105.4%.
研究领域:
环境科学
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分析化学
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公共健康
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2021
·
IF 4.098
Minglu Li,Hui Han,Shengmei Song,Shaomin Shuang,Chuan Dong
Fluorescent probes have contributed greatly to our understanding of the biological role of peroxynitrite (ONOO – ). The ONOO – fluorescence probe characterized by the arlyboronate received a moderate opening fluorescence response, and the borate-masked probe significantly increased the sensitivity of ONOO – . Thus, two simple fluorescent probes ( ADB and ANB ) with the recognition receptor of phenyl boronate moiety were constructed for the detection of ONOO – . The change of emission spectrum was affected differently by the electron donating (or withdrawing) of the substituents. ANB was shown to have a low sensitivity and quantum yield towards ONOO – in aqueous solution, whereas ADB with aggregation-induced emission (AIE) process exhibited not only good sensitivity for ONOO – with a detection limit of 75 nM, but also ADB could be used to quantitative detecting ONOO – in response to concentrations of ONOO – within 20 s. Importantly, ADB had good performance for the detection of exogenous ONOO – in the RAW 264.7 cells.
研究领域:
生物化学
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医学影像学
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Hui Wang,Tiancong Xiu,Xiaoting Zhang,Lianhuan Zhu,Haonan Bi,Ping Li,Bo Tang
Alzheimer's disease (AD) is an irreversible neurodegenerative disorder characterized by progressive cognitive decline and memory loss. However, clinical diagnosis is only effective for patients with obvious clinical symptoms, which cannot provide precise diagnosis in the early stages of AD. Therefore, developing a practical tool for rapid and accurate diagnosis of AD is of paramount importance. Research suggests that reactive oxygen species (ROS), specifically peroxynitrite (ONOO ― ) and hypobromous acid (HOBr), may involve in the progression of AD, which could serve as biomarkers. Research on the simultaneous imaging of two kinds of ROS in AD using a single fluorescence probe remains sparse. To enhance diagnostic accuracy, our research designed an ingenious small-molecule fluorescent probe, NBO, for the sequential detection of ONOO ― and HOBr with distinguishable spectra. By utilization of NBO, elevated ONOO ― and HOBr levels were found in AD brain, and the therapeutic efficacy of AD drugs were successfully assessed.
研究领域:
神经生物学
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医学影像学
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生物化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
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IF 16.744
Haifang Liu,Jianbo Liu,Sen Zhang,Yun Chen,Juanli Zhang,Yuanqiang Sun,Zhenyu Zheng,Sang Hu,Zhaohui Li,Wenxue Tang
Hearing loss is a common type of sensory deprivation. Peroxynitrite (ONOO − ) is a biologically generated reactive oxygen species that can behave as a deleterious species due to its abnormal regulation associated with the pathogenesis of many human diseases, including hearing loss. Despite the importance of ONOO − and its biological functions, accurate detection methods for monitoring ONOO − in real time and exploring the roles of ONOO − in living systems are lacking. Herein, we report a novel carbon dots (CDs)-based fluorescence turn-on ONOO − probe for tracking endogenous and exogenous ONOO − produced by RAW264.7 cells. The probe exhibited considerably enhanced emission intensity, fast response rate, outstanding selectivity , and good sensitivity. Owing to these attractive sensing properties, peroxynitrite fluctuations in a hearing loss model were monitored for the first time. Therefore, CDs are potentially effective tools for assessing fluctuations in ONOO − under different physiological and pathological conditions.
研究领域:
生物化学
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医学
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材料科学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 10
·4911-4919
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IF 3.3
Zhen Li,Yirong Wang,Ce Xu,Xianghong Li,Bingguang Zhang
A cyclometalated ruthenium complex (1) using 2-phenylimidazole as the C, N-ligand was successfully synthesized and used as a chromogenic sensor. The as-prepared sensor displayed a good absorption centered at 565 nm in the visible region. Due to strong hydrogen bonding, the complex demonstrated high sensitivity and selectivity to fluoride over other common anions in CH3CN solution. A large red-shift from 565 to 618 nm accompanied by a solution color change from red to green was achieved. However, in CH3CN/Britton-Robinson buffer (V/V = 1 : 9, pH 4.5), the competition with water resulted in no changes for fluoride. Only the presence of nitrite caused the absorption intensity between 400 and 600 nm to decrease remarkably with the solution color fading to yellow. This phenomenon could be attributed to the formation of ruthenium nitrosyl, which was then isolated and characterized by MS, FT-IR and NMR spectra. Therefore, complex 1 can be used as a chromogenic chemosensor to detect fluoride in CH3CN and nitrite in an acidic aqueous system, respectively.
研究领域:
分析化学
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配位化学
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产品关联
DOI
高影响因子
Materials Today Physics
·
2022
·
IF 11.021
Haipeng Wang,Fei Zhang,Mengmeng Jin,Donglin Zhao,Xiaoya Fan,Zerong Li,Yongsong Luo,Dongdong Zheng,Tingshuai Li,Yan Wang,Binwu Ying,Shengjun Sun,Qian Liu,Xijun Liu,Xuping Sun
Electrocatalytic nitrite (NO 2 − ) reduction to ammonia (NH 3 ) has been an attractive topic, which not only removes NO 2 − pollutants existing in surface water and underground water but also synthesizes value-added NH 3 . Nevertheless, the inactive kinetics for direct six-electron NO 2 − -to-NH 3 conversion makes it challenging to explore efficient electrocatalysts for the NO 2 − reduction reaction (NO 2 RR). Herein, we report a V-doped TiO 2 nanobelt array on a titanium plate (V–TiO 2 /TP) as a highly efficient NO 2 RR electrocatalyst. The experimental results and theoretical calculations clarify that V doping can enhance the intrinsic electrical conductivity and effectively optimize the free energy of the TiO 2 (101) crystal plane in the potential determining step, resulting in a positive effect on electrochemical NO 2 RR to NH 3 . The designed V–TiO 2 /TP exhibits an outstanding electrochemical NO 2 RR property with a high NH 3 yield of 540.8 μmol h −1 cm −2 at −0.7 V and an excellent Faradaic efficiency of 93.2% at −0.6 V versus reversible hydrogen electrode, superior to TiO 2 /TP.
研究领域:
材料科学
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环境科学
·
电化学
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产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2023
·
IF 4.5
Ahmed Mohammed Ali Abdulkhaleq,Yixu Zhao,Kun Qian,Xueshi Wang,Zhongfu Zuo,Xibin Zhou
Peroxynitrite (ONOO − ), a highly reactive nitrogen and oxygen species (RNS/ROS), has been associated with a numerous of pathophysiological diseases, including inflammation, cancer, neurodegenerative, and cardiovascular diseases. There are great demands to develop strategies that can detect ONOO − in biological systems. Herein, we developed a novel fluorescent probe based on carbon dots (CDs) for a very sensitive and selective detection and imaging of endogenous and exogenous ONOO − in cells and animal models. Green light-emitting (527 nm) CDs with high quantum yield (QY) was synthesized by hydrothermal method using resorcinol as carbon source. After the phenolic hydroxyl groups of the CDs are combined with the recognition group of ONOO − via covalent ether bond, the fluorescence is quenched and forming the fluorescent probe. Upon the addition of ONOO − to the probe, the ether bond has broken and the CDs fluorescence has recovered. This response has been detailed investigated, including response time, pH values, selectivity and sensitivity, and linearity range, which confirmed the satisfactory detection ability for ONOO − . The probe shows low cytotoxicity and was successfully applied for imaging of ONOO − exogenously and endogenously in cells and in live models of zebrafish and mice.
研究领域:
生物化学
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医学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jingxian Zhang,Qiuyue Chen,Guoguo Wang,Xuguang An,Jing Zhang,Qian Liu,Lisi Xie,Xiaolei Li,Weitang Yao,Qingquan Kong
Electrocatalytic reduction is a promising method to remove NO 2 − ; not only can it deal with environmental issues, but it can also recycle NO 2 − to form NH 3 . This study involved the preparation of oxygen vacancies-rich monoclinic cobalt molybdate nanosheets on nickel foam (CoMoO 4 /NF) employing a hybrid approach of hydrothermal and calcination reduction techniques renders highly effective catalysts for electroreduction of nitrite (NO 2 − RR). The presence of oxygen vacancies increases carrier density, enhancing electrical conductivity, reducing resistance, and accelerating electron transfer. Additionally, it serves as an active site for absorbing NO 2 − . In an aqueous solution containing 0.5 M Na 2 SO 4 and 0.1 M NO 2 − , the Faraday efficiency (FE) of CoMoO 4 /NF reaches an impressive 98.6 ± 0.02 % at −0.8 V vs. RHE, and NH 3 yield demonstrates a commendable performance, attaining 32.72 ± 0.17 mg h −1 cm −2 . Meanwhile, it exhibits robust and enduring characteristics throughout the stability tests. Employing CoMoO 4 /NF as the cathode, the Zn−NO 2 − battery demonstrates a peak power density of 5.94 mW cm −2 alongside an NH 3 yield of 3.88 mg h −1 cm −2 and an FE of 91.88 %. Furthermore, density functional theory calculations uncover the significant influence of oxygen vacancies on enhancing nitrite adsorption and activation over the CoMoO 4 surface and bring to light possible reaction pathways.
研究领域:
环境科学
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材料科学
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电化学
✓ 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）