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Liu H, Rao H, Zhou H, Li J, Li H, Guo J, Du X. A novel top-down strategy for in situ construction of vertically oriented hexagonal NiCr LDHs nanosheet arrays with intercalated sulfate ions on Nichrome fiber for selective solid-phase microextraction of phenolic compounds in water samples. Anal Chim Acta 2024; 1296:342339. [PMID: 38401931 DOI: 10.1016/j.aca.2024.342339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/31/2024] [Accepted: 02/04/2024] [Indexed: 02/26/2024]
Abstract
BACKGROUND Phenolic compounds (PCs) are a class of polar aromatic pollutants with high toxicity in environmental water. Generally the efficient sample preparation is essential for the quantification of ultra-trace target PCs in real water sample before appropriative instrumental analysis. SPME is a convenient, solvent-free and time-saving miniaturized technique and has been recognized as a green alternative to conventional extraction techniques. In SPME, however, commercial fused-silica fibers are limited to the fragility, operation temperature, extraction capacity and selectivity as well as lifetime. Therefore, the development of new SPME fibers is always needed to overcome such limitations. RESULTS We presented a novel top-down strategy for in situ construction of vertically oriented hexagonal sulfate intercalated NiCr layered double hydroxide nanosheet arrays (NiCr LDHs-SO4 NSAs) on the Nichrome (NiCr) substrate by hydrothermal treatment in NaOH solution containing (NH4)2S2O8. The results showed that much shorter hydrothermal time was needed for the construction of NiCr@NiCr LDHs-SO4 NSAs fiber in the presence of (NH4)2S2O8. Moreover, the unique NiCr LDHs-SO4 NSAs coating offered open access structure, and thereby more available surface area for adsorption. The resulting fiber exhibited better extraction efficiency for phenolic compounds (PCs), faster mass transfer rate, higher mechanical stability, and longer service life than original NiCr@NiCr LDHs NSs fiber and typical commercially fused-silica fibers. After optimizing conditions, the SPME-HPLC-UV method demonstrated a linear range from 0.05 μg L-1 to 200 μg L-1 with LODs of 0.015-0.156 μg L-1 (S/N = 3) and LOQs of 0.048-0.498 μg L-1 (S/N = 10), as well as good repeatability (3.06%-5.22%) and fiber-to-fiber reproducibility (4.32%-6.49%). SIGNIFICANCE The developed SPME-HPLC-UV method with the constructed fiber was applied to the preconcentration and detection of different types of PCs in real water samples, showing satisfactory recoveries ranging from 86.20% to 107.8% with RSDs of 3.18%-6.69%. This study provides a new strategy for in situ construction of bimetallic hydroxides and their derived nanocomposite coatings on the NiCr fiber substrate in practical SPME application.
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Affiliation(s)
- Haixia Liu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China; School of Chemical Engineering, Lanzhou City University, Lanzhou, China
| | - Honghong Rao
- School of Chemical Engineering, Lanzhou City University, Lanzhou, China
| | - Hua Zhou
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Jiayu Li
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Huirong Li
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Jinxin Guo
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Xinzhen Du
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China; Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou, 730070, China.
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Zhang K, Luo M, Rao H, Liu H, Qiang R, Xue X, Li J, Lu X, Xue Z. Ultra-rapid and highly selective colorimetric detection of hydrochloric acid via an aggregation to dispersion change of gold nanoparticles. Chem Commun (Camb) 2024; 60:2808-2811. [PMID: 38362798 DOI: 10.1039/d3cc06343g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
A rapid and highly selective naked-eye detection of hydrochloric acid (HCl) in an aqueous medium was established using HCl-triggered redispersion of gold nanoparticle aggregates.
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Affiliation(s)
- Kehui Zhang
- Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection (NWNU), Ministry of Education, Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Mingyue Luo
- Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection (NWNU), Ministry of Education, Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Honghong Rao
- School of Chemical Engineering, Lanzhou City University, Lanzhou, 730070, China
| | - Haile Liu
- Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection (NWNU), Ministry of Education, Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Ruibin Qiang
- Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection (NWNU), Ministry of Education, Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Xin Xue
- State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou, 730000, China
| | - Jianying Li
- Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection (NWNU), Ministry of Education, Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Xiaoquan Lu
- Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection (NWNU), Ministry of Education, Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Zhonghua Xue
- Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection (NWNU), Ministry of Education, Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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Gou H, He J, Nie R, Xu D, Rao H, Zhao G. A Stable Electrochemical Chiral Interface based on Graphene-chitosan Composites for Tyrosine Enantiomers Recognition. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Liu X, Zhang Q, Zhu Y, Xu S, Zhang J, Zheng Y, Zhang L, Ma M, Rao H, Liu Z. Nanoporous germanium prepared by a mechanochemical reaction with enhanced lithium storage properties. Dalton Trans 2022; 51:3075-3080. [PMID: 35113107 DOI: 10.1039/d1dt03316f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The cost-effective and facile fabrication of nanostructured germanium for lithium-ion batteries (LIBs) remains a grand challenge. Herein, nanoporous Z-Ge was generated via a facile two-step mechanochemical-etching reaction with Mg2Ge and ZnCl2. The prepared nanoporous Ge nanoparticles, as the anode for Li-Ge half cells, showed superior LIB performance, in terms of a high capacity, good rate capability, and good long-term stability of 700 cycles. Significantly, the mechanochemical reaction was extended to produce other nanoporous Ge or Si materials such as A-Ge, Z-Si, and A-Si via the mechanochemical reaction between Mg2Ge and AlCl3, Mg2Si and ZnCl2, and Mg2Si and AlCl3.
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Affiliation(s)
- Xianyu Liu
- School of Chemical Engineering, Institute of Urban Ecology and Environment, Nanomaterials Laboratory, Lanzhou City University, Lanzhou, Gansu 730070, The People's Republic of China. .,Hefei National Laboratory for Physical Science at the Microscale, Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, The People's Republic of China.
| | - Qianliang Zhang
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, and State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong 250100, The People's Republic of China
| | - Yansong Zhu
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, and State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong 250100, The People's Republic of China
| | - Shengjie Xu
- School of Applied Chemical Engineering, Lanzhou Petrochemical University of Vocational Technology, Lanzhou, Gansu 730060, The People's Republic of China
| | - Jia Zhang
- School of Applied Chemical Engineering, Lanzhou Petrochemical University of Vocational Technology, Lanzhou, Gansu 730060, The People's Republic of China
| | - Yanping Zheng
- School of Chemical Engineering, Institute of Urban Ecology and Environment, Nanomaterials Laboratory, Lanzhou City University, Lanzhou, Gansu 730070, The People's Republic of China.
| | - Lei Zhang
- School of Chemical Engineering, Institute of Urban Ecology and Environment, Nanomaterials Laboratory, Lanzhou City University, Lanzhou, Gansu 730070, The People's Republic of China.
| | - Mingguang Ma
- School of Chemical Engineering, Institute of Urban Ecology and Environment, Nanomaterials Laboratory, Lanzhou City University, Lanzhou, Gansu 730070, The People's Republic of China.
| | - Honghong Rao
- School of Chemical Engineering, Institute of Urban Ecology and Environment, Nanomaterials Laboratory, Lanzhou City University, Lanzhou, Gansu 730070, The People's Republic of China.
| | - Zheng Liu
- School of Chemical Engineering, Institute of Urban Ecology and Environment, Nanomaterials Laboratory, Lanzhou City University, Lanzhou, Gansu 730070, The People's Republic of China.
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Rao H, Li J, Luo M, Zhang K, Gou H, Liu H, Xue Z. A label-free and modification-free ratiometric electrochemical strategy for enhanced natural enzyme detection using a bare electrode and nanozymes system. Anal Bioanal Chem 2022; 414:2991-3003. [PMID: 35106612 DOI: 10.1007/s00216-022-03932-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/22/2022] [Accepted: 01/26/2022] [Indexed: 01/05/2023]
Abstract
Ratiometric electrochemical assays have been demonstrated to be more sensitive and selective in various sensing events, mainly due to their affordable built-in correction and good self-reference capability. But it is known that complicated modification and labeling operations usually are necessary for the construction of ratiometric electrochemical assays, therefore is a hot and important issue needing consideration carefully. We herein report a new yet simple bare electrode-based ratiometric electrochemical bioassay to achieve sensitive and selective analysis of alkaline phosphatase (ALP), using a liquid phase system that contains CoOOH nanozymes and commercially available indicator substrate. This proposed bioassay works based on the ratiometric change of dual electrochemical signals, arising from an exclusive target ALP-triggered hydrolysis of electrochemical substrate p-nitrophenyl phosphate (PNPP). In this design, the two hydrolyzed products of electrochemically active p-nitrophenol (PNP) and electrochemically inactive phosphate anion (PO43-) are responsible together for the ratiometric electrochemical analysis of ALP. PNP exhibits a straightforward current response toward ALP content; however, PO43- cannot show a direct electrochemical signal thus is rationally designed to offer an alternative response by linking it with the specific CoOOH nanozyme-catalyzed reaction of 3,3',5,5'-tetramethylbenzidine (TMB) and H2O2, in which the nanozyme-catalyzed product oxTMB shows a direct reduction current at the GCE, and significantly decreases with increasing PO43- species due to the good inhibition of PO43- toward CoOOH nanozyme activity. As a result, a ratiometric electrochemical strategy for ALP analysis with a low limit of detection of 0.366 U/L (S/N = 3) was successfully achieved by integrating the above direct and indirect dual electrochemical responses. This developed bioassay can allow the quantitative diagnosis of ALP activity especially with a label-free and modification-free merit, therefore paving the way for simple, convenient, and portable electroanalytical tools in biosensing design and application.
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Affiliation(s)
- Honghong Rao
- College of Chemistry & Engineering, Lanzhou City University, Lanzhou, 730070, China.
| | - Jianying Li
- College of Chemistry & Engineering, Lanzhou City University, Lanzhou, 730070, China.,Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Mingyue Luo
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Kehui Zhang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Hao Gou
- College of Chemistry & Engineering, Lanzhou City University, Lanzhou, 730070, China
| | - Haixia Liu
- College of Chemistry & Engineering, Lanzhou City University, Lanzhou, 730070, China
| | - Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
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Wei K, Rao H, Xue X, Luo M, Xue Z. A facile photothermometric sensor of acid phosphatase based on CoOOH nanozymes-mediated 3,3′,5,5′-tetramethylbenzidine photothermal system. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106736] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wei M, Rao H, Niu Z, Xue X, Luo M, Zhang X, Huang H, Xue Z, Lu X. Breaking the time and space limitation of point-of-care testing strategies: Photothermometric sensors based on different photothermal agents and materials. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Huang H, Rao H, Zhang X, Wang R, Wei M, Xue X, Luo M, Xue Z, Lu X. Integration of organic and inorganic photothermal probes for enhanced photothermometric sensing of silver ions. Chem Commun (Camb) 2021; 57:9252-9255. [PMID: 34519310 DOI: 10.1039/d1cc03576b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new signal-amplified photothermometric sensor of Ag+ was explored based on a simple yet effective integration of inorganic and organic photothermal probes, mainly depending on the successful exploitation of a dual-signal transduction channel originating from the inherent photothermal property and the peroxidase-like activity of Prussian blue nanocubes (PB NCs).
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Affiliation(s)
- Huiyi Huang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China. .,School of chemistry & Engineering, Lanzhou City University, Lanzhou, 730070, China.
| | - Honghong Rao
- School of chemistry & Engineering, Lanzhou City University, Lanzhou, 730070, China.
| | - Xinyuan Zhang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China. .,School of chemistry & Engineering, Lanzhou City University, Lanzhou, 730070, China.
| | - Rongji Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Mingming Wei
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Xin Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Mingyue Luo
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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Wang R, Wang Z, Rao H, Xue X, Luo M, Xue Z, Lu X. A two fluorescent signal indicator-based ratio fluorometric alkaline phosphatase assay based on one signal precursor. Chem Commun (Camb) 2021; 57:4444-4447. [PMID: 33949465 DOI: 10.1039/d1cc00244a] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two fluorescent signal indicators were simply converted from one organic precursor system by using the superior oxidation capability of manganese dioxide (MnO2) nanosheets for the first time, finally resulting in the successful fabrication of a ratio fluorometric bioassay of alkaline phosphatase (ALP).
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Affiliation(s)
- Rongji Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Zhihua Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Honghong Rao
- School of Chemistry & Chemical Engineering, Lanzhou City University, Lanzhou, 730070, China
| | - Xin Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Mingyue Luo
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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Niu Z, Rao H, Xue X, Luo M, Liu X, Xue Z, Lu X. A Fenton-like reaction system with analyte-activated catfish effect as an enhanced colorimetric and photothermal dopamine bioassay. Analyst 2021; 146:1689-1697. [PMID: 33443257 DOI: 10.1039/d0an01830a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fenton-like reaction systems have been proven to be efficient as powerful promoters in advanced oxidation processes (AOPs) due to their generated reactive oxygen species (ROS), such as ˙OH and ˙O2-, which can further oxidize a specific chromogenic substrate like 3,3',5,5'-tetramethylbenzidine (TMB) to generate sensitive color readout and thereby demonstrate more potential in the colorimetric analysis field. However, the inherent drawback of the low rate-limiting step of Fe3+/Fe2+ conversion in the Fenton-like reaction and its resultant inefficiency for H2O2 decomposition hinder its practical applications. We herein communicate an analyte-activated catfish effect based catalysis strategy to promote the Fenton-like reaction, in which dopamine, like a catfish, was added to activate the Fenton-like reaction. By definition, the conversion rate of Fe3+ to Fe2+ in the proposed Fenton-like reaction can be significantly accelerated through a specific DA-mediated electron transfer process which further promotes the reaction activity in the Fenton-like reaction to generate more ˙OH and ˙O2- radicals. As a result, the produced ˙OH and ˙O2- radicals in such a reaction system can significantly oxidize TMB indicator into its oxidation product (TMBox) and therefore indicate the corresponding target-dependent color and photothermal signal readout, enabling the successful fabrication of a more sensitive and stable colorimetric and photothermometric DA sensor. More significantly, this strategy can greatly advance the practical application of Fenton-like reactions in the fields of colorimetric and photothermometric bioassays.
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Affiliation(s)
- Zhengrong Niu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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Xue R, Gou H, Zhang L, Liu Y, Rao H, Zhao G. A new squaraine-triazine based covalent organic polymer as an electrode material with long life and high performance for supercapacitors. NEW J CHEM 2021. [DOI: 10.1039/d0nj03551c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Reaction of squaric acid and melamine.
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Affiliation(s)
- Rui Xue
- School of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou 730070
- P. R. China
- Provincical Key Laboratory of Gansu Higher Education for City Enviromental Pollution Control
| | - Hao Gou
- School of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou 730070
- P. R. China
- Provincical Key Laboratory of Gansu Higher Education for City Enviromental Pollution Control
| | - Li Zhang
- School of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou 730070
- P. R. China
- Provincical Key Laboratory of Gansu Higher Education for City Enviromental Pollution Control
| | - Yinsheng Liu
- School of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou 730070
- P. R. China
- Provincical Key Laboratory of Gansu Higher Education for City Enviromental Pollution Control
| | - Honghong Rao
- School of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou 730070
- P. R. China
- Provincical Key Laboratory of Gansu Higher Education for City Enviromental Pollution Control
| | - Guohu Zhao
- School of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou 730070
- P. R. China
- Provincical Key Laboratory of Gansu Higher Education for City Enviromental Pollution Control
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Gao M, An P, Rao H, Niu Z, Xue X, Luo M, Liu X, Xue Z, Lu X. Molecule-gated surface chemistry of Pt nanoparticles for constructing activity-controllable nanozymes and a three-in-one sensor. Analyst 2020; 145:1279-1287. [PMID: 31867591 DOI: 10.1039/c9an01956a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Herein, a simple strategy for constructing activity-controllable nanozymes is proposed based on the glutathione (GSH)-gated surface chemistry of citrate-capped Pt nanoparticles (PtNPs). PtNPs have been shown to have oxidase-like activity that can effectively catalyze the oxidation of 3,3',5,5'-tertamethylbenzidine (TMB) by O2, resulting in a typical color reaction from colorless to blue. We found that GSH can inhibit the oxidase-like activity of PtNPs as a molecule-gated surface chemistry element, resulting in a dramatic decrease of the oxidation of TMB. The addition of copper ions (Cu2+) could oxidize GSH into glutathione disulfide (GSSG), resulting in the distinct suppression of GSH-modulated PtNP surface chemistry and oxidase-like activity inhibition, which further results in a significant acceleration of TMB oxidation and the obvious recovery of intense blue color. Furthermore, the color-based detection signal associated with the redox of TMB indicator here was found to show good fluorescence and a photothermal effect and exhibit sensitive and selective response toward the proposed molecule-gated surface chemistry and Cu2+ target. On the basis of this phenomenon, we successfully constructed a three-in-one sensor for Cu2+ with a triple signal readout, colorimetric, photothermal (temperature), and fluorescence, depending on the proposed in situ modulation method for PtNP catalysis. The applicability of the three-in-one sensor was also demonstrated by measuring Cu2+ in human serum with a standard addition method, and the results are of satisfactory accuracy as confirmed by ICP-MS measurements.
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Affiliation(s)
- Min Gao
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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Xue R, Gou H, Zheng Y, Zhang L, Liu Y, Rao H, Zhao G. A New Squaraine‐Linked Triazinyl‐Based Covalent Organic Frameworks: Preparation, Characterization and Application for Sensitive and Selective Determination of Fe
3+
Cations. ChemistrySelect 2020. [DOI: 10.1002/slct.202002232] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Rui Xue
- School of Chemistry and Chemical Engineering Lanzhou City University, Lanzhou 730070 Gansu P. R. China
| | - Hao Gou
- School of Chemistry and Chemical Engineering Lanzhou City University, Lanzhou 730070 Gansu P. R. China
| | - Yanping Zheng
- School of Chemistry and Chemical Engineering Lanzhou City University, Lanzhou 730070 Gansu P. R. China
| | - Li Zhang
- School of Chemistry and Chemical Engineering Lanzhou City University, Lanzhou 730070 Gansu P. R. China
| | - Yinsheng Liu
- School of Chemistry and Chemical Engineering Lanzhou City University, Lanzhou 730070 Gansu P. R. China
| | - Honghong Rao
- School of Chemistry and Chemical Engineering Lanzhou City University, Lanzhou 730070 Gansu P. R. China
| | - Guohu Zhao
- School of Chemistry and Chemical Engineering Lanzhou City University, Lanzhou 730070 Gansu P. R. China
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Li M, Zhang H, Wang L, Li Z, Wang J, Xu B, Hao R, Liu C, Fu H, Rao H, Zhuang H, Wang L. The investigation of hepatitis A virus and hepatitis E virus co-infection in humans and animals in China. Acta Virol 2020; 64:20-27. [PMID: 32180415 DOI: 10.4149/av_2020_103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The aim of this study was to investigate the prevalence of co-infection of hepatitis A and hepatitis E virus (HAV/HEV) in patients with acute hepatitis as well as in different animal species. A total of 46 serum samples from patients diagnosed as hepatitis A or hepatitis E and 675 fecal samples of 11 animal species were collected. The IgM class antibodies to HEV and HAV, respectively, were detected by enzyme-linked immunosorbent assay. HEV and HAV RNAs were extracted from serum and fecal samples for the nested reverse transcription polymerase chain reaction. At least 10.9% (5/46) of the patients were co-infected with both HAV and HEV. Fifteen percent (18/120) of rabbit fecal samples and 17.5% (7/40) of swine fecal samples were positive for HEV RNA, but only 1% (2/200) of ferret fecal samples were positive for HAV RNA. Our study showed that co-infection with both HAV and HEV in patients and animals is infrequent. At least in our study, we showed that ferrets may represent the potential HAV hosts. Keywords: hepatitis A virus; hepatitis E virus; co-infection; zoonosis; prevalence.
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Liu W, Bhavsar R, Mamikonyan E, Yang FN, Lei H, Weintraub D, Detre JA, Rao H. 0075 Neural Correlates of Cognitive Fatigue in Parkinson Disease. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Parkinson’s disease (PD) is a common neurodegenerative disease affecting millions of people world-wide. Fatigue is a prevalent and debilitating non-motor symptom in PD. However, the neural correlates underlying cognitive fatigue are poorly understood. Our previous studies suggested that continuous performance of a simple but mentally demanding psychomotor vigilance task (PVT) induced cognitive fatigue, operationalized as subjective exhaustion and time-on-task performance decline. Here we used arterial spin labeling (ASL) perfusion fMRI to investigate regional cerebral blood flow (CBF) changes in PD patients during cognitive fatigue induced by continuous performance of 20-min PVT.
Methods
Twenty-one PD patients completed a 20-min PVT during the ASL scan and two additional 4-min resting-state ASL scans before and after PVT. Reaction times (RTs) and regional CBF changes throughout the PVT as well as during pre- and post-task resting baselines were measured. Cognitive fatigue was analyzed by dividing the entire PVT performance into five quintiles in addition to the immediate measurement of self-rated fatigue before and after PVT.
Results
PD patients demonstrated significantly increased self-reported fatigue ratings after the task (p < 0.05) and progressively slower RTs across quintiles (p < 0.05). Perfusion data showed that the PVT activates the right middle frontal cortex, right inferior parietal lobe, right insula, bilateral occipital cortex, and right cerebellum (FDR corrected). Moreover, the bilateral middle frontal gyri were less active during the post-task rest compared to the pre-task rest.
Conclusion
These results demonstrated that cognitive fatigue has an ongoing effect on brain activity after a period of continuous mental effort and supported the critical role of prefrontal cortex in mediating cognitive fatigue in PD. The findings also suggest the utility of continuous PVT as an appropriate paradigm to induce and examine cognitive fatigue in PD.
Support
Supported in part by Parkinson’s Foundation Translational Research Grant and NIH grants R01-MH107571, R21-AG051981, and P30-NS045839.
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Affiliation(s)
- W Liu
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, PHILADELPHIA, PA
| | - R Bhavsar
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, PHILADELPHIA, PA
| | - E Mamikonyan
- Department of Psychiatry, University of Pennsylvania, PHILADELPHIA, PA
| | - F N Yang
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, PHILADELPHIA, PA
| | - H Lei
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, PHILADELPHIA, PA
| | - D Weintraub
- Department of Psychiatry, University of Pennsylvania, PHILADELPHIA, PA
| | - J A Detre
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, PHILADELPHIA, PA
| | - H Rao
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, PHILADELPHIA, PA
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA
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Galli O, Goel N, Basner M, Detre J, Thase M, Sheline Y, Rao H, Dinges D, Gehrman P. 1100 Self-Monitoring Of PVT Performance In Healthy Adults And Individuals With MDD. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Negativity bias in depression has been repeatedly demonstrated in the judgment and decision-making literature. Research investigating the impact of sleep deprivation on self-evaluation of performance in healthy or depressed populations is limited. We examined 1) whether individuals with Major Depressive Disorder (MDD) exhibit a negativity bias in subjective ratings of performance on the Psychomotor Vigilance Task (PVT) as compared with healthy adults, and 2) the impact of total sleep deprivation (TSD) on these ratings.
Methods
N=33 individuals with MDD and n=9 healthy adults completed a 5-day study protocol including two baseline nights (B1-B2, 9h TIB), 36 hours of TSD, and one night of recovery sleep opportunity (Rec). The PVT was administered every 2-4 hours. A brief questionnaire was administered immediately prior to (PRE) and following (POST) the PVT, asking participants to estimate their average reaction time (RT) using a 9-point Likert-type scale. Mixed-effects models examined the impact of group (MDD, Control), protocol day (B1, B2, SD, Rec), and their interaction on objective PVT performance (mean RT) and subjective performance estimates (PRE and POST ratings).
Results
Mean RT was significantly slower during TSD (p<0.001) for all participants. Individuals with MDD and healthy adults did not differ in objective PVT performance (p=0.25) across days. There was no significant interaction between group and protocol day (p=0.96). Both groups predicted slower RTs during TSD as compared with baseline or recovery days (PRE-PVT, p=0.006). Individuals with MDD anticipated slower RTs as compared with healthy adults (p=0.001). On POST-PVT estimates, all participants reported subjective poorer performance during TSD (p<0.008). Individuals with MDD reported slower RTs as compared with healthy adults (p=0.002). Interaction effects between group and protocol day on PRE- and POST- performance ratings were not significant.
Conclusion
This project is the first to investigate subjective estimates of PVT performance in healthy and depressed individuals. Individuals with MDD subjectively reported slower response times as compared with control participants, despite similar objective performance. Depressive symptoms may be a potential confounder of subjective, but not objective, PVT performance.
Support
5R01MH107571
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Affiliation(s)
- O Galli
- University of Pennsylvania, Philadelphia, PA
| | - N Goel
- Rush University Medical Center, Chicago, IL
| | - M Basner
- University of Pennsylvania, Philadelphia, PA
| | - J Detre
- University of Pennsylvania, Philadelphia, PA
| | - M Thase
- University of Pennsylvania, Philadelphia, PA
| | - Y Sheline
- University of Pennsylvania, Philadelphia, PA
| | - H Rao
- University of Pennsylvania, Philadelphia, PA
| | - D Dinges
- University of Pennsylvania, Philadelphia, PA
| | - P Gehrman
- University of Pennsylvania, Philadelphia, PA
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Quan P, Lei H, Wang J, Liu W, Zhang X, Dinges D, Rao H. 0294 Baseline Response Speed Predicts Locus Coeruleus Integrity Change After Sleep Deprivation. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Locus coeruleus (LC) is the major source of norepinephrine (NE) in the brain, which plays a key role in maintaining arousal and alertness. Sleep loss significantly impairs arousal and alertness. However, it is unknown whether sleep loss disrupts LC integrity, which can be measured non-invasively by diffusion tensor imaging (DTI). In the current study, we used DTI to examine the effects of one night of acute total sleep deprivation (TSD) on fractional anisotropy (FA), an index reflecting fiber density, axonal diameter and myelination.
Methods
We analyzed DTI and psychomotor vigilance test (PVT) data from N=54 health adults (23 females, age range 21–50 years) from a well controlled in-laboratory sleep deprivation study. Participants were randomized to either a TSD condition (n=40) without sleep on night 2, or a control condition (n=14) with no sleep loss. Standard DTI scans were conducted on the morning of day 2 and day 3 between 0700h-1000h. The PVT reciprocal response time (RRT) was used to measure individual’s response speed at baseline without sleep loss. LC regions-of-interest (ROI) were defined by standard templates from Keren et al. (2009). Imaging data were analyzed using FSL toolbox.
Results
For the whole TSD group, no differences were found in the LC FA values before and after sleep deprivation (p > .2). However, when dividing the TSD group to a slow group and a fast group based on their baseline PVT response speed, significantly increased LC FA were found in the slow group (p = .007) but not in the fast group (p > .4). The PVT RRT negatively correlated with LC FA value changes after TSD (r = -.44, p = .004). No correlations were found between the PVT RRT and LC FA changes in the control group.
Conclusion
Our results showed that baseline vigilance response speed correlated with LC integrity change after sleep deprivation, with slower response exhibiting greater changes in LC integrity. These findings support the key role of LC-NE system in the regulation of alertness and arousal.
Support
Supported in part by NIH grants R01-HL102119, R01-MH107571, R21-AG051981. CTRC UL1RR024134, and P30-NS045839.
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Affiliation(s)
- P Quan
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadlephia, PA
| | - H Lei
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadlephia, PA
| | - J Wang
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadlephia, PA
| | - W Liu
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadlephia, PA
| | - X Zhang
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadlephia, PA
| | - D Dinges
- Division of Sleep and Chronobiology, Department of Psychiatry, University of Pennsylvania, Philadlephia, PA
| | - H Rao
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadlephia, PA
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Lei H, Quan P, Liu W, Zhang X, Chai Y, Yang F, Dinges D, Rao H. 0060 Morning Locus Coeruleus Activation During the PVT Predicts Later-Day Sleepiness. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
The locus coeruleus (LC) plays a key role in the regulation of arousal and autonomic function. Homeostatic sleep pressure refers to the drive for sleep that increases as a saturating exponential when we stay awake and decreases exponentially when we sleep. The current study used arterial spin labeling (ASL) functional magnetic resonance imaging (fMRI) to investigate the relationship between homeostatic sleep pressure (sleepiness) and LC activity during the psychomotor vigilance test (PVT).
Methods
We analyzed sleepiness and ASL imaging data from N=70 health adults (40 males, age range 21–50 years) who participated in a controlled in-laboratory sleep study. All participants were scanned at rest and during the PVT on the morning between 0700h-1000h after 9 hour time-in-bed (TIB) baseline sleep. LC regions-of-interest (ROI) were defined by standard templates from Keren et al. (2009). Sleepiness was assessed by the Karolinska Sleepiness Scale (KSS) every two hours from 10:30 am to 10:30 pm.
Results
Sleepiness scores gradually increased over wakefulness time and reached its peak in the evening at about 10:20pm. PVT-induced CBF changes did not correlate with sleepiness scores on the morning (p > 0.05), but showed significant negative correlations with sleepiness scores on later day when sleep pressure became higher, especially during the night-time (r = -0.41, p < 0.001). Specifically, LC CBF showed significant increases during the PVT scan as compared to the resting scan (p = 0.04) in individuals with less nigh-time sleepiness (KSS < 4), but no differences (p > 0.1) in individuals with greater nigh-time sleepiness (KSS ≥ 5). After controlling for age, gender, and total sleep time, PVT-induced regional CBF difference in the LC still negatively predicted sleepiness (β = -0.325, p = 0.005).
Conclusion
Our findings showed that individuals with greater LC CBF increases during the PVT were less sleepy during the night, supporting the key role of LC activity in promoting wakefulness and maintaining sleep homeostasis. PVT-induced LC activation may provide a non-invasive bio-marker of homeostatic sleep pressure in healthy adults.
Support
Supported in part by NIH grants R01-HL102119, R01-MH107571, R21-AG051981. CTRC UL1RR024134, and P30-NS045839.
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Affiliation(s)
- H Lei
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadelphia, PA
| | - P Quan
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadelphia, PA
| | - W Liu
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadelphia, PA
| | - X Zhang
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadelphia, PA
| | - Y Chai
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadelphia, PA
| | - F Yang
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadelphia, PA
| | - D Dinges
- Division of Sleep and Chronobiology, Department of Psychiatry, University of Pennsylvania, Philadelphia, PA
| | - H Rao
- Center for Functional Neuroimaging, Department of Neurology, University of Pennsylvania, Philadelphia, PA
- Division of Sleep and Chronobiology, Department of Psychiatry, University of Pennsylvania, Philadelphia, PA
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An P, Xue X, Rao H, Wang J, Gao M, Wang H, Luo M, Liu X, Xue Z, Lu X. Gold nanozyme as an excellent co-catalyst for enhancing the performance of a colorimetric and photothermal bioassay. Anal Chim Acta 2020; 1125:114-127. [PMID: 32674757 DOI: 10.1016/j.aca.2020.05.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 04/18/2020] [Accepted: 05/19/2020] [Indexed: 02/06/2023]
Abstract
Advanced oxidation processes (AOPs) have recently proposed for advancing colorimetric sensing applications, owing to their excellent performance of sensitive color readout that generated from the oxidation of chromogenic substrates like 3,3',5,5'-tetramethylbenzidine (TMB) by reactive oxygen species (ROS) of AOPs such as ·OH and ·O2- radicals. However, the efficiency of ROS generation and the related H2O2 decomposition in most AOPs is quite low especially at neutral pH, which greatly hampered the practical sensing applications of the AOPs. We herein communicated that β-cyclodextrin (β-CD)-capped gold nanoparticles (β-CD@AuNPs) can promote catalysis at neutral pH for AOP as an excellent co-catalyst. In this strategy, inorganic pyrophosphate (PPi) ions was first used to coordinate with Cu2+ and form Cu2+-PPi complex. In the presence of hydrogen peroxide, target inorganic pyrophosphatase (PPase) can hydrolyze PPi into inorganic phosphate (Pi) and release free Cu2+ simultaneously, resulting in a Cu2+-triggered Fenton-like AOP reaction. The introduced β-CD@AuNPs acts as a co-catalyst, analogous to mediators in the most co-catalyzed system, to enhance the rate-limiting step of Cu2+/Cu+ conversion in Cu2+/H2O2 Fenton-like AOP and resulting in an efficient generation of ·OH and ·O2- radicals, which further producing an intense blue color by oxidizing TMB into its oxidation product (TMBox) within a short time. Finally, this reaction system was used to simply detecting target PPase with the colorimetric and photothermal readout based on the in-situ generated TMBox indicator. More significantly, we successfully demonstrated nanozyme can serve as a co-catalyst to promote the AOP catalysis at neutral pH, and inspire other strategies to overcome the pH limitation in the AOP catalysis and expand its colorimetric and photothermometric application.
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Affiliation(s)
- Pengli An
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Xin Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Honghong Rao
- College of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou, 730070, China
| | - Jingjing Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Min Gao
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Hongqiang Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Mingyue Luo
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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Zheng Y, Ye H, Zhao G, Rao H, Liu H, Liu F, Wen N, Sun K. Competitive adsorption and correlative mechanism of heavy metal ions using ploy(cellulose/humic acid/acrylic acid) in multi-element aqueous medium. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03223-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Xue X, Gao M, Rao H, Luo M, Wang H, An P, Feng T, Lu X, Xue Z, Liu X. Photothermal and colorimetric dual mode detection of nanomolar ferric ions in environmental sample based on in situ generation of prussian blue nanoparticles. Anal Chim Acta 2020; 1105:197-207. [DOI: 10.1016/j.aca.2020.01.049] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/28/2019] [Accepted: 01/21/2020] [Indexed: 12/12/2022]
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22
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Xue X, Luo M, Rao H, Xue Z, Wang B, Liu X, Lu X. Enhanced Thermometric Sensor for Arsenate Analysis Based on Dual Temperature Readout Signaling Strategy. Anal Chem 2020; 92:4672-4680. [PMID: 32090547 DOI: 10.1021/acs.analchem.0c00358] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
New methods for portable detection of arsenate are still in urgent need. Herein, we explored a simple but sensitive thermometric strategy for arsenate determination without complex instruments and skilled technicians. Cobalt oxyhydroxide (CoOOH) nanoflakes, can ingeniously decompose hydrogen peroxide into oxygen in a sealed reaction vessel, accompanied by marked pressure and significant temperature increase due to the exothermic reaction effect (ΔH = -98.2 kJ/mol). The increased pressure then compelled a certain amount of H2O overflowing from the drainage device into another vessel, leading to a significant temperature decrease due to the preloaded ammonium nitrate (NH4NO3) and its good dissolution endothermic effect (ΔH = 25.4 kJ/mol). In the presence of arsenate, the catalytic activity of CoOOH nanoflakes for H2O2 decomposition was inhibited dramatically, resulting in an obvious decrease of the pressure, weighting water and temperature response. The two temperature responses with increasing and decreasing feature were easily measured through a common thermometer, and exhibited an effective signaling amplification via coupling both "signal-on" and "signal-off" temperature readout elements. The obtained dual superimposing temperature readout exhibits a good linear with the concentration of arsenate with a lower detection limit (51 nM, 3.8 ppb). Compared to the inductively coupled plasma mass spectrometry, this enhanced thermometric strategy provides a simple, rapid, convenient, low cost, and portable platform for sensing arsenate in real environmental water.
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Affiliation(s)
- Xin Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 (China)
| | - Mingyue Luo
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 (China)
| | - Honghong Rao
- School of Chemistry & Environmental Engineering, Lanzhou City University, Lanzhou, 730070 (China)
| | - Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 (China)
| | - Baodui Wang
- Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou, 730000 (China)
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 (China)
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070 (China)
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Suyama J, Yang F, Soriano A, Rao H, Arya L. 25: Mechanisms underlying nocturia in women with bladder pain syndrome/interstitial cystitis. Am J Obstet Gynecol 2020. [DOI: 10.1016/j.ajog.2019.12.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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24
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Wang H, Rao H, Xue X, An P, Gao M, Luo M, Liu X, Xue Z. Target-mediated surface chemistry of gold nanorods for breaking the low color resolution limitation of monocolorimetric sensor. Anal Chim Acta 2020; 1097:222-229. [DOI: 10.1016/j.aca.2019.11.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 11/01/2019] [Accepted: 11/06/2019] [Indexed: 12/20/2022]
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25
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An P, Rao H, Gao M, Xue X, Liu X, Lu X, Xue Z. Simply translating mercury detection into a temperature measurement: using an aggregation-activated oxidase-like activity of gold nanoparticles. Chem Commun (Camb) 2020; 56:9799-9802. [DOI: 10.1039/d0cc01445a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A new household thermometer-based POCT analysis for mercury based on the aggregation-activated oxidase-like activity of gold nanoparticles.
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Affiliation(s)
- Pengli An
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Honghong Rao
- School of Chemistry & Chemical Engineering
- Lanzhou City University
- Lanzhou
- China
| | - Min Gao
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xin Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
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26
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Rao H, Huang H, Zhang X, Xue X, Luo M, Liu H, Xue Z. A simple thermometer-based photothermometric assay for alkaline phosphatase activity based on target-induced nanoprobe generation. NEW J CHEM 2020. [DOI: 10.1039/d0nj03920a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Alkaline phosphatase (ALP)-induced in situ generation of Prussian blue nanoparticles for photothermometric ALP detection.
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Affiliation(s)
- Honghong Rao
- College of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou
- China
| | - Huiyi Huang
- College of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou
- China
- College of Chemistry and Chemical Engineering
| | - Xinyuan Zhang
- College of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou
- China
- College of Chemistry and Chemical Engineering
| | - Xin Xue
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Mingyue Luo
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Haixia Liu
- College of Chemistry and Chemical Engineering
- Lanzhou City University
- Lanzhou
- China
| | - Zhonghua Xue
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
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27
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Wang H, Rao H, Luo M, Xue X, Xue Z, Lu X. Noble metal nanoparticles growth-based colorimetric strategies: From monocolorimetric to multicolorimetric sensors. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.06.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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28
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Dietrich CM, Babushkin I, Andrade JRC, Rao H, Demircan A, Morgner U. Field enhancement in a doubly resonant optical parametric oscillator. Opt Lett 2019; 44:4909-4912. [PMID: 31568473 DOI: 10.1364/ol.44.004909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
Single-resonant and (signal/idler) double-resonant optical parametric oscillators differ fundamentally on the conversion efficiency back to the pump wave. The nonpresent idler in the single-resonant case allows for signal intracavity enhancement well beyond the pump power level. This paper answers the question, how the phase-matched back conversion in a doubly-resonant system can be overcome to reveal substantial power enhancement, and what parameters it depends on. In a degenerate double-resonant OPO (DROPO) pumped by a thin-disk oscillator, an enhancement up to a factor of four is shown experimentally. Support of a semianalytical theory is presented with exceptionally simple relations between enhancement and intracavity losses. Interestingly, our theory predicts no fundamental limit to the maximal field enhancement or conversion efficiency.
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Abstract
A conceptually new synthesis of pyridine rings by a [C4 + CN] assembly has been developed by applying a vinylogous version of the classic Blaise reaction. The zinc-mediated reaction of (het)aryl or alkyl nitriles with ethyl-4-bromocrotonate provided a variety of C(6)-substituted pyridin-2-ones in a single-step.
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Affiliation(s)
- H. Rao
- Department of Chemistry, Pondicherry University
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Jiang Y, Chai Y, Yang F, Xu S, Basner M, Detre JA, Dinges DF, Rao H. 0218 Effects Of Sleep Deprivation And Recovery Sleep On Human Brain Network Organization. Sleep 2018. [DOI: 10.1093/sleep/zsy061.217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y Jiang
- University of Pennsylvania, Philadelphia, PA
| | - Y Chai
- University of Pennsylvania, Philadelphia, PA
| | - F Yang
- University of Pennsylvania, Philadelphia, PA
| | - S Xu
- University of Pennsylvania, Philadelphia, PA
| | - M Basner
- University of Pennsylvania, Philadelphia, PA
| | - J A Detre
- University of Pennsylvania, Philadelphia, PA
| | - D F Dinges
- University of Pennsylvania, Philadelphia, PA
| | - H Rao
- University of Pennsylvania, Philadelphia, PA
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Xue Z, Xiong L, Peng H, Rao H, Liu X, Lu X. A selective colorimetric sensing strategy for cysteine based on an indicator-displacement mechanism. NEW J CHEM 2018. [DOI: 10.1039/c7nj03887a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rapid determination of cysteine in aqueous solution is important for the diagnosis and treatment of some diseases.
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Affiliation(s)
- Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Lulu Xiong
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Hao Peng
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Honghong Rao
- School of Chemistry & Environmental Engineering
- Lanzhou City University
- Lanzhou
- China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
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Xue Z, Fu X, Rao H, Zhou X, Liu X, Lu X. A new electron transfer mediator actuated non-enzymatic nitrite sensor based on the voltammetry synthetic composites of 1-(2-pyridylazo)-2-naphthol nanostructures coated electrochemical reduced graphene oxide nanosheets. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.11.181] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Xue Z, Fu X, Rao H, Hassan Ibrahim M, Xiong L, Liu X, Lu X. A colorimetric indicator-displacement assay for cysteine sensing based on a molecule-exchange mechanism. Talanta 2017; 174:667-672. [DOI: 10.1016/j.talanta.2017.07.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 06/23/2017] [Accepted: 07/01/2017] [Indexed: 11/28/2022]
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Rao H, Wu E, Fu S, Yang M, Feng B, Lin A, Fei R, Fontana RJ, Lok AS, Wei L. The higher prevalence of truncal obesity and diabetes in American than Chinese patients with chronic hepatitis C might contribute to more rapid progression to advanced liver disease. Aliment Pharmacol Ther 2017; 46:731-740. [PMID: 28833342 DOI: 10.1111/apt.14273] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 05/03/2017] [Accepted: 07/27/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Chronic hepatitis C virus (HCV) infection is the leading cause of cirrhosis and hepatocellular carcinoma (HCC) in the United States (US) and an emerging cause in China. AIM To compare the clinical characteristics of hepatitis C patients in the US and China, and factors influencing disease stage. METHODS Prospective study of 2 cohorts of HCV patients recruited at 1 site in the US and 3 sites in China. Standardised questionnaire on risk factors and medical history were used and diagnosis of cirrhosis and HCC was based on pre-defined criteria. RESULTS One thousand nine hundred and fifty seven patients (1000 US and 957 China) were enrolled. US patients were more likely to be men (61.4% vs 48.5%), older (median age 57 vs 53 years), obese (38.4% vs 16.8%) and diabetic (21.8% vs 10.8%). A significantly higher per cent of US patients had cirrhosis (38.2% vs 16.0%) and HCC (14.1% vs 2.7%). Investigator estimated time at infection in US was 10 years earlier than in Chinese patients but US patients were more likely to have advanced disease even after stratifying for duration of infection. Study site in the US, older age, truncal obesity, diabetes and prior HCV treatment were significant predictors of advanced disease on multivariate analysis. CONCLUSIONS HCV patients in the US had more advanced liver disease than those in China. We speculate that underlying fatty liver disease may be a major contributor to this difference, and management of glycometabolic abnormalities should occur in parallel with anti-viral therapy to achieve optimal outcomes.
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Affiliation(s)
- H Rao
- Peking University Hepatology Institute, Peking University People's Hospital, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing, China
| | - E Wu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan Health System, Ann Arbor, MI, USA
| | - S Fu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan Health System, Ann Arbor, MI, USA
| | - M Yang
- Peking University Hepatology Institute, Peking University People's Hospital, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing, China
| | - B Feng
- Peking University Hepatology Institute, Peking University People's Hospital, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing, China
| | - A Lin
- The Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI, USA
| | - R Fei
- Peking University Hepatology Institute, Peking University People's Hospital, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing, China
| | - R J Fontana
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan Health System, Ann Arbor, MI, USA
| | - A S Lok
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan Health System, Ann Arbor, MI, USA
| | - L Wei
- Peking University Hepatology Institute, Peking University People's Hospital, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Beijing, China
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Xue Z, Wang X, Rao H, Liu X, Lu X. A colorimetric sensor of cysteine based on self-assembly nanostructures of Fe 3+-H 2O 2/Tetramethylbenzidine system with "On-Off" switching function. Anal Biochem 2017; 534:1-9. [PMID: 28693991 DOI: 10.1016/j.ab.2017.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 06/26/2017] [Accepted: 07/04/2017] [Indexed: 10/19/2022]
Abstract
Many strategies have been explored for selectively and sensitively detecting cysteine in different samples. Here, a novel colorimetric sensor based on self-assembly nanostructures of Fe3+-H2O2/Tetramethylbenzidine system with dual-level logic gate function and colorimetric determination of cysteine were firstly explored. The proposed Fe3+-H2O2-TMB system provides a sensitive optical signal due to the selectively reductive ability of cysteine to the oxidized TMB and thus could be successfully applied to the construction of instant on-site visual detection method with a paper based test strip for cysteine determination in a sample solution as well as for a dual-level logic gate fabrication.
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Affiliation(s)
- Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
| | - Xiaofen Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Honghong Rao
- College of Chemistry and Chemical Engineering, Lanzhou City University, Lanzhou 730070, China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
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Rao H, Li Y, Zhang G, Xue Z, Zhao G, Li S, Du X. A New Colorimetric Sensor for Cysteine Determination Based on Dual Reacting-mediated Strategy. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Honghong Rao
- College of Chemistry and Environmental Engineering; Lanzhou City University; Lanzhou 730070 China
| | - Ying Li
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province; College of Chemistry & Chemical Engineering, Northwest Normal University; Lanzhou 730070 China
| | - Guoliang Zhang
- College of Chemistry and Environmental Engineering; Lanzhou City University; Lanzhou 730070 China
| | - Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province; College of Chemistry & Chemical Engineering, Northwest Normal University; Lanzhou 730070 China
| | - Guohu Zhao
- College of Chemistry and Environmental Engineering; Lanzhou City University; Lanzhou 730070 China
| | - Shengyin Li
- College of Chemistry and Environmental Engineering; Lanzhou City University; Lanzhou 730070 China
| | - Xinzhen Du
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province; College of Chemistry & Chemical Engineering, Northwest Normal University; Lanzhou 730070 China
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Wang G, Krishna KB, Rao H. 1214 Home CPAP Therapy May Underestimate Apnea and Hypopnea Index in Infants with Obstructive Sleep Apnea. Sleep 2017. [DOI: 10.1093/sleepj/zsx052.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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38
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Rao H, McNamara C, Kitch D, Lisa A. 1002 SLEEP DURATION, SLEEP HYGIENE AND PARENTS’ SLEEP KNOWLEDGE OF CHILDREN REFERRED FOR POLYSOMNOGRAPHY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.1001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Boland E, Rao H, Dinges DF, Smith RV, Goel N, Detre J, Basner M, Sheline Y, Thase ME, Gehrman PR. 1094 META-ANALYSIS OF THE ANTIDEPRESSANT EFFECTS OF THERAPEUTIC SLEEP DEPRIVATION. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.1093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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40
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Rao H. Electroanalytical Investigation of p-nitrophenol with Dual Electroactive Groups on a Reduced Graphene Oxide Modified Glassy Carbon Electrode. INT J ELECTROCHEM SC 2017. [DOI: 10.20964/2017.02.39] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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41
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Rao H, Ma Y, Xue Z, Du X, Zhao G, Li S. Amperometric Determination of Maltol using a Cobalt Oxide-Assembled MCM-41 Composite-Modified Glassy Carbon Electrode. ANAL LETT 2016. [DOI: 10.1080/00032719.2016.1225749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Honghong Rao
- College of Chemistry & Environmental Engineering, Lanzhou City University, Lanzhou, P. R. China
| | - Yaya Ma
- College of Chemistry & Environmental Engineering, Lanzhou City University, Lanzhou, P. R. China
| | - Zhonghua Xue
- College of Chemistry & Environmental Engineering, Lanzhou City University, Lanzhou, P. R. China
| | - Xinzhen Du
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, P. R. China
| | - Guohu Zhao
- College of Chemistry & Environmental Engineering, Lanzhou City University, Lanzhou, P. R. China
| | - Shenyin Li
- College of Chemistry & Environmental Engineering, Lanzhou City University, Lanzhou, P. R. China
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Yorke J, Fleming S, Shuldham C, Rao H, Smith HE. Nonpharmacological interventions aimed at modifying health and behavioural outcomes for adults with asthma: a critical review. Clin Exp Allergy 2016; 45:1750-64. [PMID: 25675860 DOI: 10.1111/cea.12511] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Evidence suggests that living with asthma is linked with psychological and behavioural factors including self-management and treatment adherence, and therefore, there is a reasonable hypothesis that nonpharmacological treatments may improve health outcomes in people living with this condition. A systematic review of randomized controlled trials (RCTs) of nonpharmacological interventions for adults with asthma was designed. Databases searched included The Cochrane Airways Group Register of trials, CENTRAL and Psychinfo. The literature search was conducted until May 2014. Twenty-three studies met the inclusion criteria and were organized into four groups: relaxation-based therapies (n = 9); mindfulness (n = 1), biofeedback techniques (n = 3); cognitive behavioural therapies (CBT) (n = 5); and multicomponent interventions (n = 5). A variety of outcome measures were used, even when trials belonged to the same grouping, which limited the ability to conduct meaningful meta-analyses. Deficiencies in the current evidence base, notably trial heterogeneity, means that application to clinical practice is limited and clear guidelines regarding the use of nonpharmacological therapies in asthma is limited. Relaxation and CBT, however, appear to have a consistent positive effect on asthma-related quality of life and some psychological outcomes, and lung function (relaxation only). Future trials should be informed by previous work to harmonize the interventions under study and outcome measures used to determine their effectiveness; only then will meaningful meta-analyses inform clinical practice.
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Affiliation(s)
- J Yorke
- Nursing, University of Manchester, Manchester, UK
| | - S Fleming
- Nursing Research, Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - C Shuldham
- Nursing and Quality, Royal Brompton and Harefield Foundation Trust, London, UK
| | - H Rao
- Public Health and Primary Care, University of Brighton, Brighton, UK
| | - H E Smith
- Public Health and Primary Care, University of Brighton, Brighton, UK
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Xue Z, Yin B, Wang H, Li M, Rao H, Liu X, Zhou X, Lu X. An organic indicator functionalized graphene oxide nanocomposite-based colorimetric assay for the detection of sarcosine. Nanoscale 2016; 8:5488-96. [PMID: 26902537 DOI: 10.1039/c6nr00005c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Rapid detection of sarcosine is a key requirement for both diagnosis and treatment of disease. We report here a simple yet sensitive colorimetric nanocomposite platform for rapid detection of sarcosine in alkaline media. The approach exploited the benefits of a rapid color-producing reaction between an organic indicator, 1,2-naphthoquinone-4-sulphonic acid sodium salt (NQS), and the analyte of sarcosine species as well as the good catalytic ability of graphene oxide (GO) to the formation of highly colored products due to its good water dispersibility, extremely large surface area and facile surface modification. As a result, a NQS functionalized GO nanocomposite through π-π stacking has been demonstrated to be useful as a highly efficient catalyst system for the selective and sensitive colorimetric determination of sarcosine by providing a nanocomposite-amplified colorimetric response. Meanwhile, the strategy offered excellent selectivity toward sarcosine species against other amino acids as well as a satisfying detection limit of 0.73 μM. More importantly, by using an electrochemical method, a credible sensing mechanism of GO nanocomposite-based colorimetric platform for a special analyte determination can be easily verified and elucidated, which also provides an attractive alternative to conventional characterization strategies.
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Affiliation(s)
- Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Bo Yin
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Hui Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Mengqian Li
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Honghong Rao
- School of chemistry & environmental science, Lanzhou City University, Lanzhou, 730070, China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Xinbin Zhou
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
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Xue Z, Yin B, Li M, Rao H, Wang H, Zhou X, Liu X, Lu X. Direct electrodeposition of well dispersed electrochemical reduction graphene oxide assembled with nickel oxide nanocomposite and its improved electrocatalytic activity toward 2, 4, 6-Trinitrophenol. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.01.206] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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46
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Xue Z, Li M, Rao H, Yin B, Zhou X, Liu X, Lu X. Phase transformation-controlled synthesis of CuO nanostructures and their application as an improved material in a carbon-based modified electrode. RSC Adv 2016. [DOI: 10.1039/c5ra22297d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Column-shaped CuO nanorods have been synthesized by a two-step “precursor formation-crystallization” process using a hydrothermal method with advantages of being template- and surfactant-free.
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Affiliation(s)
- Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Mengqian Li
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | | | - Bo Yin
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xibin Zhou
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
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47
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Xue Z, Li M, Rao H, Yin B, Zhou X, Liu X, Lu X. Correction: Phase transformation-controlled synthesis of CuO nanostructures and their application as an improved material in a carbon-based modified electrode. RSC Adv 2016. [DOI: 10.1039/c6ra90016j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Correction for ‘Phase transformation-controlled synthesis of CuO nanostructures and their application as an improved material in a carbon-based modified electrode’ by Zhonghua Xue et al., RSC Adv., 2016, 6, 12829–12836.
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Affiliation(s)
- Zhonghua Xue
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Mengqian Li
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | | | - Bo Yin
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xibin Zhou
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiuhui Liu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province
- College of Chemistry & Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
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Wang X, Lu M, Wang H, Pei Y, Rao H, Du X. Three-dimensional graphene aerogels–mesoporous silica frameworks for superior adsorption capability of phenols. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.08.030] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Deng L, Xu-Monette ZY, Loghavi S, Manyam GC, Xia Y, Visco C, Huh J, Zhang L, Zhai Q, Wang Y, Qiu L, Dybkær K, Chiu A, Perry AM, Zhang S, Tzankov A, Rao H, Abramson J, Sohani AR, Xu M, Hsi ED, Zhu J, Ponzoni M, Wang S, Li L, Zhang M, Ferreri AJM, Parsons BM, Li Y, Piris MA, Medeiros LJ, Young KH. Primary testicular diffuse large B-cell lymphoma displays distinct clinical and biological features for treatment failure in rituximab era: a report from the International PTL Consortium. Leukemia 2015; 30:361-72. [DOI: 10.1038/leu.2015.237] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 08/15/2015] [Accepted: 08/18/2015] [Indexed: 12/15/2022]
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