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Tan R, Zeng M, Huang Q, Zhou N, Deng M, Li Y, Luo X. Dual-mode SERS/colorimetric sensing of nitrite in meat products based on multifunctional au NPs@COF composite. Food Chem 2024; 457:140166. [PMID: 38936123 DOI: 10.1016/j.foodchem.2024.140166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 06/29/2024]
Abstract
The presence of nitrite in food products has generated significant public concern. A simple and rapid dual-mode surface-enhanced Raman spectroscopy (SERS)/colorimetric detection of nitrite is proposed based on a diazo reaction and multifunctional gold nanoparticle-doped covalent organic framework (Au@COF) composite. Under acidic conditions, the reaction between toluidine blue and nitrite yielded a colorless diazo salt, simultaneously attenuating its characteristic absorption peak and Raman signal. The multifunctional Au@COF materials enhanced the Raman signal and ensured good reproducibility. Additionally, the reaction rates improved, and the sensitivity was enhanced due to the excellent adsorption capacity of the COF. The proposed method demonstrated high sensitivity and excellent recovery rates for nitrite detection in food samples. This approach shows potential for precisely detecting nitrite content in real-world food samples by integrating the simplicity of colorimetric analysis with the enhanced sensitivity of SERS.
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Affiliation(s)
- Rui Tan
- School of Science, Xihua University, Chengdu 610039, PR China
| | - Mei Zeng
- School of Science, Xihua University, Chengdu 610039, PR China
| | - Qiuwen Huang
- School of Science, Xihua University, Chengdu 610039, PR China
| | - Na Zhou
- School of Science, Xihua University, Chengdu 610039, PR China
| | - Mengjiang Deng
- School of Science, Xihua University, Chengdu 610039, PR China
| | - Yuanyuan Li
- Shanghai Anti-doping Laboratory, Shanghai University of Sport, Shanghai 200,438, PR China..
| | - Xiaojun Luo
- School of Science, Xihua University, Chengdu 610039, PR China; Asymmetric Synthesis and Chiral technology Key Laboratory of Sichuan Province, Chengdu 610,039, PR China..
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2
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Xue R, Liu Y, Wu X, Lv Y, Guo J, Yang GY. Covalent Organic Frameworks Meet Titanium Oxide. ACS NANO 2024. [PMID: 39028766 DOI: 10.1021/acsnano.4c06845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2024]
Abstract
In order to expand the applicability of materials and improve their performance, the combined use of different materials has increasingly been explored. Among these materials, inorganic-organic hybrid materials often exhibit properties superior to those of single materials. Covalent organic frameworks (COFs) are famous crystalline porous materials constructed by organic building blocks linked by covalent bonds. In recent years, the combination of COFs with other materials has shown interesting properties in diverse fields, and the composite materials of COFs and TiO2 have been investigated more and more. These two outstanding materials are combined through covalent bonding, physical mixing, and other methods and exhibit excellent performance in various fields, including photocatalysis, electrocatalysis, sensors, separation, and energy storage and conversion. In this Review, the current preparation methods and applications of COF-TiO2 hybrid materials are introduced in detail, and their future development and possible problems are discussed and prospected, which is of great significance for related research. It is believed that these interesting hybrid materials will show greater application value as research progresses.
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Affiliation(s)
- Rui Xue
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Yinsheng Liu
- School of Chemical Science and Engineering, Tongji University, Shanghai 200092, P. R. China
| | - Xueyan Wu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Yan Lv
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Jixi Guo
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
| | - Guo-Yu Yang
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
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Xavier IPL, Lemos LL, de Melo EC, Campos ET, de Souza BL, Faustino LA, Galante D, de Oliveira PFM. Mechanochemical hydroquinone regeneration promotes gold salt reduction in sub-stoichiometric conditions of the reducing agent. Phys Chem Chem Phys 2024; 26:11436-11444. [PMID: 38567569 DOI: 10.1039/d3cp05609k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Bottom-up mechanochemical synthesis (BUMS) has been demonstrated to be an efficient approach for the preparation of metal nanoparticles (NPs), protected by surface agents or anchored on solid supports. However, there are limitations, such as precise size and morphological control, due to a lack of knowledge about the mechanically induced processes of NP formation under milling. In this article, we further investigate the BUMS of AuNPs. Using SiO2 as a solid support, we studied the effect of typical reducing agents, namely NaBH4, L-ascorbic acid, and hydroquinone (HQ), on the conversion of a AuIII source. XANES showed that HQ is the strongest reducing agent under our experimental conditions, leading to the quantitative conversion of gold salt in a few minutes. Interestingly, even when HQ was used in sub-stoichiometric amounts, AuIII could be reduced to ratios higher than 85% after two minutes of milling. Investigations into the byproducts by 1H NMR and GC-FID/MS enabled the identification HQ regeneration and the formation of its derivatives. We mainly focused on benzoquinone (BQ), which is the product of the oxidation of HQ as it reduces the gold salt. We could demonstrate that HQ is regenerated from BQ exclusively under milling and acidic conditions. The regenerated HQ and other HQ-chlorinated molecules could then reduce gold-oxidized species, leading to higher conversions and economy of reactants. Our study highlights the intriguing and complex mechanisms of mechanochemical systems, in addition to fostering the atom and energy economy side of mechanochemical means to produce metal nanoparticles.
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Affiliation(s)
- Ismael P L Xavier
- Institute of Chemistry, University of São Paulo - Av. Prof. Lineu Prestes 748, 05508-000, São Paulo - SP, Brazil.
| | - Laura L Lemos
- Institute of Chemistry, University of São Paulo - Av. Prof. Lineu Prestes 748, 05508-000, São Paulo - SP, Brazil.
| | - Eduardo C de Melo
- Institute of Chemistry, University of São Paulo - Av. Prof. Lineu Prestes 748, 05508-000, São Paulo - SP, Brazil.
| | - Eduardo T Campos
- Institute of Chemistry, University of São Paulo - Av. Prof. Lineu Prestes 748, 05508-000, São Paulo - SP, Brazil.
| | - Breno L de Souza
- Institute of Chemistry, University of São Paulo - Av. Prof. Lineu Prestes 748, 05508-000, São Paulo - SP, Brazil.
| | - Leandro A Faustino
- Institute of Chemistry, University of São Paulo - Av. Prof. Lineu Prestes 748, 05508-000, São Paulo - SP, Brazil.
| | - Douglas Galante
- Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas - SP, 13083-970, Brazil
| | - Paulo F M de Oliveira
- Institute of Chemistry, University of São Paulo - Av. Prof. Lineu Prestes 748, 05508-000, São Paulo - SP, Brazil.
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Song SG, Oh C, Yoo S, Cho JY, Kim KS, Song C, Premkumar T. A general one-pot, solvent-free solid-state synthesis of biocompatible metal nanoparticles using dextran as a tool: Evaluation of their catalytic and anti-cancer activities. Int J Biol Macromol 2023; 253:127069. [PMID: 37751819 DOI: 10.1016/j.ijbiomac.2023.127069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 09/28/2023]
Abstract
We propose a general green method coupled with a solid-state vibration ball milling strategy for the synthesis of various metal nanoparticles (MNPs), employing a polymeric carbohydrate dextran (Dx) as a reducing and stabilizing molecule. The synthesis of size-controlled Dx-based MNPs (Dx@MNPs), featuring comparatively narrow size distributions, was achieved by controlling the mass ratio of the reactants, reaction time, frequency of the vibration ball mill, and molecular weight of Dx. Notably, this process was conducted at ambient temperatures, without the aid of solvents and accelerating agents, such as NaOH, and conventional reductants as well as stabilizers. Thermal properties of the resulting Dx@MNPs nanocomposites were extensively investigated, highlighting the influence of metal precursors and reaction conditions. Furthermore, the catalytic activity of synthesized nanocomposites was evaluated through the reduction reaction of 4-nitrophenol, exhibiting great catalytic performance. In addition, we demonstrated the excellent biocompatibility of the as-prepared Dx@MNPs toward human embryonic kidney (HEK-293) cells, revealing their potential for anticancer activities. This novel green method for synthesizing biocompatible MNPs with Dx expands the horizons of carbohydrate-based materials as well as MNP nanocomposites for large-scale synthesis and controlled size distribution for various industrial and biomedical applications.
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Affiliation(s)
- Sun Gu Song
- Department of Chemistry, Sungkyunkwan University, Suwon, Gyeonggi 16419, South Korea
| | - Changsuk Oh
- Department of Chemistry, Sungkyunkwan University, Suwon, Gyeonggi 16419, South Korea
| | - Sulgi Yoo
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Gyeonggi 16419, South Korea
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, Gyeonggi 16419, South Korea
| | - Kyung-Su Kim
- Convergence Research Center for Energy and Environmental Sciences, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si 16419, South Korea
| | - Changsik Song
- Department of Chemistry, Sungkyunkwan University, Suwon, Gyeonggi 16419, South Korea.
| | - Thathan Premkumar
- Department of Chemistry, Sungkyunkwan University, Suwon, Gyeonggi 16419, South Korea; The University College, Sungkyunkwan University, Suwon, Gyeonggi 16419, South Korea.
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Gu H, Liu X, Wang S, Chen Z, Yang H, Hu B, Shen C, Wang X. COF-Based Composites: Extraordinary Removal Performance for Heavy Metals and Radionuclides from Aqueous Solutions. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 260:23. [DOI: doi.org/10.1007/s44169-022-00018-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/30/2022] [Indexed: 06/25/2023]
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2D Microporous Covalent Organic Frameworks as Cobalt Nanoparticle Supports for Electrocatalytic Hydrogen Evolution Reaction. CRYSTALS 2022. [DOI: 10.3390/cryst12070880] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Covalent organic frameworks (COFs) are a new class of porous crystalline polymers, which are considered to be excellent supports for metal nanoparticles (MNPs) due to their highly ordered structure, chemical tunability, and porosity. In this work, two novel ultra-microporous COFs, JUC−624 and JUC−625, with narrow pore size distribution have been synthesized and used for the confined growth of ultrafine Co nanoparticles (CoNPs) with high loading. In an alkaline environment, the produced materials were investigated as electrocatalysts for the hydrogen evolution reaction (HER). Electrochemical test results show that CoNPs@COFs have a Tafel slope of 84 mV·dec−1, an onset overpotential of 105 mV, and ideal stability. Remarkably, CoNPs@JUC−625 required only 146 mV of overpotential to afford a current density of 10 mA cm−2. This research will open up new avenues for making COF-supported ultrafine MNPs with good dispersity and stability for extensive applications.
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