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Wang Y, Sun X, Zhou Y, Liu J, Zhu H, Jiang R, Miao Y, Fu Y. A ratiometric fluorescent probe based on UiO-66-TCPP for selective and visual detection of quercetin in food. Food Chem 2024; 457:140198. [PMID: 38936127 DOI: 10.1016/j.foodchem.2024.140198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/07/2024] [Accepted: 06/21/2024] [Indexed: 06/29/2024]
Abstract
Quercetin (QCT) is a flavonoid with significant health benefits, necessitating sensitive detection methods for food safety and quality control. This study presents a novel UiO-66-TCPP ratiometric fluorescent probe for the quantitative and visual detection of QCT. Under optimal conditions, the fluorescence intensity of UiO-66-TCPP decreased linearly with increasing QCT concentration, with a detection limit of 26 nM. The probe demonstrated high specificity, showing no significant interference from various substances and QCT analogues. Practical applicability was confirmed by testing artificially contaminated juice samples, achieving recovery rates between 98.0% and 104.8%. Furthermore, a paper-based sensor was developed by incorporating UiO-66-TCPP onto Whatman#1 chromatography paper. This sensor exhibited stable fluorescence and a reliable, sensitive visual response to QCT concentrations, detectable via a smartphone-based color recognizer application. The UiO-66-TCPP ratiometric fluorescent probe provides a sensitive, specific, and practical method for detecting QCT in food matrices, offering significant potential for both laboratory and on-site applications.
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Affiliation(s)
- Yiran Wang
- Taizhou Key Laboratory of Biomass Functional Materials Development and Application, School of Life Sciences, Taizhou University, Taizhou 318000, Zhejiang Province, PR China; School of Food Sciences and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, Jiangsu Province, PR China
| | - Xiaolong Sun
- Taizhou Key Laboratory of Biomass Functional Materials Development and Application, School of Life Sciences, Taizhou University, Taizhou 318000, Zhejiang Province, PR China
| | - Yufeng Zhou
- Taizhou Key Laboratory of Biomass Functional Materials Development and Application, School of Life Sciences, Taizhou University, Taizhou 318000, Zhejiang Province, PR China; School of Food Sciences and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, Jiangsu Province, PR China
| | - Jiachen Liu
- Taizhou Key Laboratory of Biomass Functional Materials Development and Application, School of Life Sciences, Taizhou University, Taizhou 318000, Zhejiang Province, PR China; School of Food Sciences and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, Jiangsu Province, PR China
| | - Huayue Zhu
- Taizhou Key Laboratory of Biomass Functional Materials Development and Application, School of Life Sciences, Taizhou University, Taizhou 318000, Zhejiang Province, PR China
| | - Ru Jiang
- Taizhou Key Laboratory of Biomass Functional Materials Development and Application, School of Life Sciences, Taizhou University, Taizhou 318000, Zhejiang Province, PR China
| | - Yingjie Miao
- Taizhou Key Laboratory of Biomass Functional Materials Development and Application, School of Life Sciences, Taizhou University, Taizhou 318000, Zhejiang Province, PR China.
| | - Yongqian Fu
- Taizhou Key Laboratory of Biomass Functional Materials Development and Application, School of Life Sciences, Taizhou University, Taizhou 318000, Zhejiang Province, PR China.
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Taj I, Khan MJI, Batool HS, Ahmad J, Yousaf M, Usmani N, Rasheed A. Theoretical investigations of structural, electronic, magnetic, and optical properties of group V (X = V, Nb, Ta) added CeO 2-X materials for optoelectronic applications. J Mol Model 2024; 30:159. [PMID: 38700555 DOI: 10.1007/s00894-024-05958-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 04/29/2024] [Indexed: 05/12/2024]
Abstract
CONTEXT Depletion of natural resources, responsible for energy production, is a serious concern for researchers to develop alternate energy resources or materials. Scientists have proposed various energy materials which are based on semiconductors and their underlying physics. Cerium oxide (CeO2) is a versatile energy material which receives much attention owing to excellent photocatalytic, photonic, thermal stability, and optoelectronic applications. Even though CeO2 exhibited remarkable physical properties, but yet, they can be enhanced upon suitable doping. Focus on current research is to dope group V elements into CeO2 in order to enhance its electronic and optical response. The density of states (DOS) and band gaps of proposed materials are calculated, and significant improvement is noted after applying TB-mbj method. Optical absorption spectra of V/Nb/Ta-doped CeO2 show blueshift and decrease in reflectivity along with the presence of magnetism illustrate potential uses of these materials in future UV optoelectronics, spintronics, sensing, and energy harvesting devices. METHODS This research is based on computational work carried using Wien2k code where PBE-GGA approximation is used to approximate exchange and correlation potentials. Supercells of vanadium/niobium/tantalum-doped CeO2 are constructed, and spin-polarized density of states (DOS) along with optical constant are calculated. TB-mbj method is used to bring improvements in DOS and band gaps of proposed materials. Iterations are conducted using convergence criterion, and non-relativistic calculations are performed.
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Affiliation(s)
- Imran Taj
- Laboratory of Theoretical and Experimental Physics, Institute of Phyiscs (IoP), Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - M Junaid Iqbal Khan
- Laboratory of Theoretical and Experimental Physics, Institute of Phyiscs (IoP), Bahauddin Zakariya University, Multan, 60800, Pakistan.
| | - Hafiza Saima Batool
- Laboratory of Theoretical and Experimental Physics, Institute of Phyiscs (IoP), Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Javed Ahmad
- Laboratory of Theoretical and Experimental Physics, Institute of Phyiscs (IoP), Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Masood Yousaf
- Department of Physics, Division of Science and Technology, University of Education, Lahore, 54770, Pakistan
| | - Nauman Usmani
- Laboratory of Theoretical and Experimental Physics, Institute of Phyiscs (IoP), Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Asif Rasheed
- Laboratory of Theoretical and Experimental Physics, Institute of Phyiscs (IoP), Bahauddin Zakariya University, Multan, 60800, Pakistan
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Zhao S, Riedel M, Patarroyo J, Bastús NG, Puntes V, Yue Z, Lisdat F, Parak WJ. Tailoring of the photocatalytic activity of CeO 2 nanoparticles by the presence of plasmonic Ag nanoparticles. NANOSCALE 2022; 14:12048-12059. [PMID: 35946341 DOI: 10.1039/d2nr01318e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The present study investigates basic features of a photoelectrochemical system based on CeO2 nanoparticles fixed on gold electrodes. Since photocurrent generation is limited to the absorption range of the CeO2 in the UV range, the combination with metal nanoparticles has been studied. It can be shown that the combination of silver nanoparticles with the CeO2 can shift the excitation range into the visible light wavelength range. Here a close contact between both components has been found to be essential and thus, hybrid CeO2@Ag nanoparticles have been prepared and analyzed. We have collected arguments that electron transfer occurs between both compositional elements of the hybrid nanoparticles.The photocurrent generation can be rationalized on the basis of an energy diagram underlying the necessity of surface plasmon excitation in the metal nanoparticles, which is also supported by wavelength-dependent photocurrent measurements. However, electrochemical reactions seem to occur at the CeO2 surface and consequently, the catalytic properties of this material can be exploited as exemplified with the photoelectrochemical reduction of hydrogen peroxide. It can be further demonstrated that the layer-by layer technique can be exploited to create a multilayer system on top of a gold electrode which allows the adjustment of the sensitivity of the photoelectrochemical system. Thus, with a 5-layer electrode with hybrid CeO2@Ag nanoparticles submicromolar hydrogen peroxide concentrations can be detected.
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Affiliation(s)
- Shuang Zhao
- Fachbereich Physik, CHyN, Universität Hamburg, 22761 Hamburg, Germany.
| | - Marc Riedel
- Biosystems Technology, Institute of Life Sciences and Biomedical Technologies, Technical University of Applied Sciences Wildau, 15745 Wildau, Germany.
| | - Javier Patarroyo
- Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
| | - Neus G Bastús
- Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
| | - Victor Puntes
- Institut Català de Nanociència i Nanotecnologia (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
- Vall d'Hebron Institut de Recerca (VHIR), 08035 Barcelona, Catalonia, Spain
- ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Catalonia, Spain
| | - Zhao Yue
- Department of Microelectronics, Nankai University, 30071 Tianjin, China.
| | - Fred Lisdat
- Biosystems Technology, Institute of Life Sciences and Biomedical Technologies, Technical University of Applied Sciences Wildau, 15745 Wildau, Germany.
| | - Wolfgang J Parak
- Fachbereich Physik, CHyN, Universität Hamburg, 22761 Hamburg, Germany.
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