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Deng S, Liu J, Han D, Yang X, Liu H, Zhang C, Blecker C. Synchronous fluorescence detection of nitrite in meat products based on dual-emitting dye@MOF and its portable hydrogel test kit. JOURNAL OF HAZARDOUS MATERIALS 2024; 463:132898. [PMID: 37939561 DOI: 10.1016/j.jhazmat.2023.132898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/07/2023] [Accepted: 10/29/2023] [Indexed: 11/10/2023]
Abstract
A novel ratiometric fluorescent nanoprobe (Rh6G@UIO-66-NH2) was fabricated for efficient nitrite (NO2-) detection in the present study. When NO2- was introduced, it interacted with the amino groups on the surface of Rh6G@UIO-66-NH2, forming diazonium salts that led to the quenching of blue fluorescence. With this strategy, a good linear relationship between NO2- concentration and the fluorescent intensity ratio of the nanoprobe in the range of 1-100 μM was established, with a detection limit of 0.021 μM. This dual-readout nanosensor was applied to analyze the concentration of NO2- in real meat samples, achieving satisfactory recovery rates of 94.72-104.52%, highlighting the practical potential of this method. Furthermore, a portable Gel/Rh6G@UIO-66-NH2 hydrogel test kit was constructed for on-spot dual-mode detection of NO2-. This kit allows for convenient colorimetric analysis and fluorometric detection when used in conjunction with a smartphone. All the photos taken with the portable kit was converted into digital information using ImageJ software. It provides colorimetric and fluorescent visual detection of NO2- over a range of 0.1-1.5 mM, achieving a direct quantitative tool for NO2- identification. This methodology presents a promising strategy for NO2- detection and expands the application prospects for on-spot monitoring of food safety assessment.
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Affiliation(s)
- Siyang Deng
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; University of Liège, Gembloux Agro-Bio Tech, Unit of Food Science and Formulation, Passage des Déportés 2, Gembloux B-5030, Belgium
| | - Junmei Liu
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; University of Liège, Gembloux Agro-Bio Tech, Unit of Food Science and Formulation, Passage des Déportés 2, Gembloux B-5030, Belgium
| | - Dong Han
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xinting Yang
- Research Center for Information Technology, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China; National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
| | - Huan Liu
- Research Center for Information Technology, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China; National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China.
| | - Chunhui Zhang
- Key Laboratory of Agro-Products Processing, Ministry of Agriculture and Rural Affairs, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Christophe Blecker
- University of Liège, Gembloux Agro-Bio Tech, Unit of Food Science and Formulation, Passage des Déportés 2, Gembloux B-5030, Belgium
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Wang J, Xu X, Zhou Y, Ma W, Wang F, Zhou Y, Men X. A robust COF@MXene membrane for ultra-high flux of water-in-oil emulsion separation. Chem Commun (Camb) 2023. [PMID: 37377056 DOI: 10.1039/d3cc01951a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
A facile covalent assembly strategy is proposed for the preparation of superhydrophobic COF-stabilized MXene separation membranes. Ultra-high separation fluxes of up to 54 280 L m-2 h-1 and 643 200 L m-2 h-1 bar-1 are obtained for emulsified water-in-oil mixtures by adopting gravity and external pressure, respectively. Moreover, the challenges of easy swelling and oxidation properties of MXene have been effectively overcome via the COF-stabilized mechanism.
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Affiliation(s)
- Jing Wang
- School of Materials and Energy, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Xiangqian Xu
- School of Materials and Energy, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Yujian Zhou
- Science and Technology on Low-Light-Level Night Vision Laboratory, Xi'an 710065, China
| | - Wen Ma
- School of Materials and Energy, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Fushan Wang
- School of Materials and Energy, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Yongjun Zhou
- School of Materials and Energy, Lanzhou University, Lanzhou, 730000, P. R. China.
| | - Xuehu Men
- School of Materials and Energy, Lanzhou University, Lanzhou, 730000, P. R. China.
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Mallakpour S, Sirous F, Dinari M. Comparative study for removal of cationic and anionic dyes using alginate-based hydrogels filled with citric acid-sawdust/UiO-66-NH 2 hybrid. Int J Biol Macromol 2023; 238:124034. [PMID: 36924868 DOI: 10.1016/j.ijbiomac.2023.124034] [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: 11/28/2022] [Revised: 02/28/2023] [Accepted: 03/09/2023] [Indexed: 03/16/2023]
Abstract
Nowadays, a big challenge is developing a sustainable and effective method for removing contaminants like dyes from aqueous solutions. In this regard, Zr-based metal-organic framework (UiO-66-NH2) and sawdust as the ideal adsorbents were used. Due to their low separation in adsorption processes, embedding into alginate and obtaining composite beads are suggested as a suitable strategy. The achieved Ca-alginate/citric acid (CA)-sawdust/UiO-66-NH2 hydrogel beads were used to compare cationic and anionic dyes removal. This sorbent indicated an excellent selectivity for removing methylene blue versus methyl orange in a binary system. pH = 6, adsorbent amount = 80 mg, methylene blue concentration = 10 mg/L, and contact time = 420 min were achieved as optimal parameters on methylene blue adsorption with an adsorption capacity of about 26 mg/g. The removal process of methylene blue followed linear Freundlich isotherm and nonlinear pseudo-2nd-order kinetic models. The regeneration test demonstrated methylene blue removal efficiency higher than about 89 % after 9 cycles. According to the outcomes, methylene blue could be attached to the adsorbent surface through the electrostatic, hydrogen bonding, and π-π interactions of the aromatic rings. These results confirm the potential of Ca-alginate/CA-sawdust/UiO-66-NH2 hydrogel beads as a selective bio-sorbent for cationic dye removal.
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Affiliation(s)
- Shadpour Mallakpour
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
| | - Fariba Sirous
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran
| | - Mohammad Dinari
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
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Long M, Jiang Y, Yang C, Xu Z, Zhang R, Yuan J, Zhang S, Zhang M, Wu H, Jiang Z. In-situ assembly of polyelectrolyte via surface segregation of titanium oxide for antifouling membranes. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Selective removal of cationic organic dyes via electrospun nanofibrous membranes derived from polyarylene ethers containing pendent nitriles and sulfonates. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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