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Patel A, Patel J, Pathan S. Highly Active and Dispersed Pd Nanoparticles Stabilized by Lacunary Phosphomolybdate: Synthesis, Characterization, and Liquid Phase Hydrogenation of Levulinic Acid to γ-Valerolactone. Inorg Chem 2023; 62:6970-6980. [PMID: 37104732 DOI: 10.1021/acs.inorgchem.3c00205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
In the current scenario, one of the crucial reaction conversions is the synthesis of renewable biofuels and value-added chemicals from the hydrogenation of biomass. Therefore, in the present work, we are proposing aqueous phase conversion of levulinic acid to γ-valerolactone via hydrogenation using formic acid as a sustainable green hydrogen source over a sustainable heterogeneous catalyst. The catalyst based on Pd nanoparticles stabilized by lacunary phosphomolybdate (PMo11Pd) was designed for the same and characterized by EDX, FT-IR, 31P NMR, powder XRD, XPS, TEM, HRTEM, and HAADF-STEM analyses. A detailed optimization study was done to achieve maximum conversion (95% conversion), using a very small amount of Pd (1.879 × 10-3 mmol) with notable TON (2585) at 200 °C in 6 h. The regenerated catalyst was found to be workable (reusable) up to three cycles without any change in activity. Also, a plausible reaction mechanism was proposed. The catalyst exhibits superior activity against reported catalysts.
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Affiliation(s)
- Anjali Patel
- Polyoxometalates and Catalysis Laboratory, Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 39002, Gujarat, India
| | - Jay Patel
- Polyoxometalates and Catalysis Laboratory, Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara 39002, Gujarat, India
| | - Soyeb Pathan
- Centre of Research for Development (CR4D), Parul Institute of Applied Sciences, Parul University, Vadodara 391760, India
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Nitrites Detection with Sensors Processed via Matrix-Assisted Pulsed Laser Evaporation. NANOMATERIALS 2022; 12:nano12071138. [PMID: 35407255 PMCID: PMC9000718 DOI: 10.3390/nano12071138] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/21/2022] [Accepted: 03/24/2022] [Indexed: 12/10/2022]
Abstract
This work is focused on the application of a laser-based technique, i.e., matrix-assisted pulsed laser evaporation (MAPLE) for the development of electrochemical sensors aimed at the detection of nitrites in water. Commercial carbon-based screen-printed electrodes were modified by MAPLE via the application of a newly developed composite coating with different concentrations of carbon nanotubes (CNTs), chitosan, and iron (II) phthalocyanine (C32H16FeN8). The performance of the newly fabricated composite coatings was evaluated both by investigating the morphology and surface chemistry of the coating, and by determining the electro-catalytic oxidation properties of nitrite with bare and modified commercial carbon-based screen-printed electrode. It was found that the combined effect of CNTs with chitosan and C32H16FeN8 significantly improves the electrochemical response towards the oxidation of nitrite. In addition, the MAPLE modified screen-printed electrodes have a limit of detection of 0.12 µM, which make them extremely useful for the detection of nitrite traces.
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Chu M, Bai Z, Zhu D, Chen W, Yang G, Xin J, Ma H, Pang H, Tan L, Wang X. A β-nicotinamide adenine dinucleotide electrochemical sensor based on polyoxometalate built by the combination of electrodeposition and self-assembly. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chen Y, Li F, Li S, Zhang L, Sun M. A review of application and prospect for polyoxometalate-based composites in electrochemical sensor. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109084] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Recent developments in carbon nanomaterial-enabled electrochemical sensors for nitrite detection. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.01.008] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Khanfar MF, Abu Eisheh NJ, Al-Ghussain L, Al-Halhouli AT. Lab on a Chip for the Colorimetric Determination of Nitrite in Processed Meat Products in the Jordanian Market. MICROMACHINES 2019; 10:E36. [PMID: 30621098 PMCID: PMC6356477 DOI: 10.3390/mi10010036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 12/28/2018] [Accepted: 01/04/2019] [Indexed: 12/21/2022]
Abstract
Nitrite and Nitrate have been used extensively as additives in various meat products to enhance flavor, color, and to preserve the meat from the bacterial growth. High concentrations of nitrite can threat human health since several studies in the literature claim that nitrite is associated with cancer incidences, leukemia, and brain tumors. Therefore, it is vital to measure the nitrite concentrations in processed meat products. In this study, an in-lab miniaturized photometric detection system is fabricated to inspect the nitrite concentration in processed meat products in Jordan. The analytical performance of nitrite detection is evaluated based on three key statistical parameters; linearity, limit of detection, and limit of quantitation. Respectively, for the fabricated system, the three values are found to be equal to 0.995, 1.24 × 10-2 ppm, and 4.12 × 10-2 ppm. Adherence to Beer's law is found over the investigated range from 2.63 ppm to 96.0 ppm. The developed system is utilized for photometric detection of nitrite in processed meat products available in the Jordanian market like pastrami, salami, and corned beef. In all of the analyzed samples, the nitrite content is found to be lower than 150 ppm, which represents the maximum allowable nitrite limit.
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Affiliation(s)
- Mohammad F Khanfar
- Department of Pharmaceutical and Chemical Engineering, School of Applied Medical Sciences, German Jordanian University, Amman 11180, Jordan.
| | - Nour J Abu Eisheh
- Department of Pharmaceutical and Chemical Engineering, School of Applied Medical Sciences, German Jordanian University, Amman 11180, Jordan.
| | - Loiy Al-Ghussain
- NanoLab, Mechatronice Engineering Department, School of Applied Technical Sciences, German Jordanian University, Amman 11180, Jordan.
| | - Ala'aldeen T Al-Halhouli
- NanoLab, Mechatronice Engineering Department, School of Applied Technical Sciences, German Jordanian University, Amman 11180, Jordan.
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Bui TH, Hong SP, Yoon J. Development of nanoscale zirconium molybdate embedded anion exchange resin for selective removal of phosphate. WATER RESEARCH 2018; 134:22-31. [PMID: 29407648 DOI: 10.1016/j.watres.2018.01.061] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/22/2018] [Accepted: 01/25/2018] [Indexed: 05/22/2023]
Abstract
Development of a selective adsorbent with an enhanced removal efficiency for phosphate from wastewater is urgently needed. Here, a hybrid adsorbent of nanoscale zirconium molybdate embedded in a macroporous anion exchange resin (ZMAE) is proposed for the selective removal of phosphate. The ZMAE consists of a low agglomeration of zirconium molybdate nanoparticles (ZM NPs) dispersed within the structure of the anion exchange (AE) resin. As major results, the phosphate adsorption capacity of the ZMAE (26.1 mg-P/g) in the presence of excess sulfate (5 mM) is superior to that of the pristine AE resin (1.8 mg-P/g) although their phosphate uptake capacity was similar in the absence of sulfate and these results were supported by the high selectivity coefficient of the ZMAE toward phosphate over sulfate (SPO4/SO4) more than 100 times compared to the pristine AE resin. This superior selective performance of the ZMAE for phosphate in the presence of sulfate ions is well explained by the role of the ZM NPs that contributed to 69% of the phosphate capacity which is based on an observation that the phosphate adsorption capacity of the ZM NPs is not affected by the presence of sulfate. In addition, the behavior of the selective phosphate removal by the ZMAE was well demonstrated by not only in the batch mode experiment with simulated Mekong river water and representative wastewater effluent but also in a column test.
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Affiliation(s)
- Trung Huu Bui
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process, Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul, 151-742, Republic of Korea
| | - Sung Pil Hong
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process, Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul, 151-742, Republic of Korea
| | - Jeyong Yoon
- School of Chemical and Biological Engineering, College of Engineering, Institute of Chemical Process, Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul, 151-742, Republic of Korea; Asian Institute for Energy, Environment & Sustainability(AIEES), Seoul National University (SNU), Gwanak-gu, Daehak-dong, Seoul, 151-742, Republic of Korea.
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Yu R, Liu R, Deng J, Ran M, Wang N, Chu W, He Z, Du Z, Jiang C, Sun W. Pd nanoparticles immobilized on carbon nanotubes with a polyaniline coaxial coating for the Heck reaction: coating thickness as the key factor influencing the efficiency and stability of the catalyst. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02588b] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Pd/PANI@CNTs were synthesized using a low-cost and simple method. The thickness of the PANI layer is the key in determining the stability of the catalyst in the Heck reaction.
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Affiliation(s)
- Rui Yu
- China-America Cancer Research Institute
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province
- Guangdong Medical University
- Dongguan
- China
| | - Rui Liu
- China-America Cancer Research Institute
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province
- Guangdong Medical University
- Dongguan
- China
| | - Jie Deng
- College of Pharmacy and Biological Engineering
- Chengdu University
- Chengdu 610106
- China
| | - Maofei Ran
- College of Chemistry & Environment Protection Engineering
- Southwest University for Nationalities
- Chengdu 610041
- China
| | - Ning Wang
- Physical Sciences and Engineering Division
- Advanced Membranes and Porous Materials Center
- King Abdullah University of Science and Technology
- Thuwal
- Saudi Arabia
| | - Wei Chu
- Department of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Zhiwei He
- China-America Cancer Research Institute
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province
- Guangdong Medical University
- Dongguan
- China
| | - Zheng Du
- National Supercomputing Center in Shenzhen (Shenzhen Cloud Computing Center)
- Shenzhen
- China
| | - Chengfa Jiang
- Department of Chemical Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Wenjing Sun
- China-America Cancer Research Institute
- Key Laboratory for Medical Molecular Diagnostics of Guangdong Province
- Guangdong Medical University
- Dongguan
- China
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Novel Nanocomposite of Chitosan-protected Platinum Nanoparticles Immobilized on Nickel Hydroxide: Facile Synthesis and Application as Glucose Electrochemical Sensor. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1146-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Gao W, Yu T, Wu L, Bi L. Fabrication of white luminescence composite films containing Dy-polyoxometalate and the study of their luminescence switching behaviors. Chem Commun (Camb) 2016; 52:10403-6. [DOI: 10.1039/c6cc04949d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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