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Duan X, Liu A, Zhou L, Wei S. Pd nanoparticles anchored Co-MOF for nitrophenol reduction. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:97936-97947. [PMID: 37603249 DOI: 10.1007/s11356-023-29302-1] [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: 05/25/2023] [Accepted: 08/08/2023] [Indexed: 08/22/2023]
Abstract
Three nitrophenols are among the 126 priority toxic pollutants identified by the US Environmental Protection Agency. Catalyzing hydrogenation is a simple way to convert these toxic nitrophenols into harmless aminophenols. Commercial PdC has excellent catalytic hydrogenation activity but has weaknesses such as high price and low reusability. Here, we fabricated a series of nano-Pd 2D Co-MOF heterostructures and filtered for optimal Co-MOF@Pd0.0012, which contain ultra-low Pd content (0.08 wt%) and recorded high catalytic efficiency for 4-nitrophenol among the reported non-single atom catalyst due to edge and size effects. The TOF value of Co-MOF@Pd0.0012 is 9800 h-1, ∼206 times higher than that of PdC (Pd content, 10 wt%). Furthermore, Co-MOF@Pd0.0012 has been widely applied to catalyze the reduction of various nitrophenol substrates with higher than 99% conversion efficiency and selectivity.
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Affiliation(s)
- Xiaomeng Duan
- College of Chemistry and Materials Science, Jiangsu Key Laboratory of Bio-Functional Materials, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, China
| | - Ai Liu
- College of Chemistry and Materials Science, Jiangsu Key Laboratory of Bio-Functional Materials, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, China
| | - Lin Zhou
- College of Chemistry and Materials Science, Jiangsu Key Laboratory of Bio-Functional Materials, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, China
| | - Shaohua Wei
- College of Chemistry and Materials Science, Jiangsu Key Laboratory of Bio-Functional Materials, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, China.
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Zhang Y, Ye Z, Li C, Chen Q, Aljuhani W, Huang Y, Xu X, Wu C, Bell SEJ, Xu Y. General approach to surface-accessible plasmonic Pickering emulsions for SERS sensing and interfacial catalysis. Nat Commun 2023; 14:1392. [PMID: 36914627 PMCID: PMC10011407 DOI: 10.1038/s41467-023-37001-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 02/24/2023] [Indexed: 03/16/2023] Open
Abstract
Pickering emulsions represent an important class of functional materials with potential applications in sustainability and healthcare. Currently, the synthesis of Pickering emulsions relies heavily on the use of strongly adsorbing molecular modifiers to tune the surface chemistry of the nanoparticle constituents. This approach is inconvenient and potentially a dead-end for many applications since the adsorbed modifiers prevent interactions between the functional nanosurface and its surroundings. Here, we demonstrate a general modifier-free approach to construct Pickering emulsions by using a combination of stabilizer particles, which stabilize the emulsion droplet, and a second population of unmodified functional particles that sit alongside the stabilizers at the interface. Freeing Pickering emulsions from chemical modifiers unlocks their potential across a range of applications including plasmonic sensing and interfacial catalysis that have previously been challenging to achieve. More broadly, this strategy provides an approach to the development of surface-accessible nanomaterials with enhanced and/or additional properties from a wide range of nano-building blocks including organic nanocrystals, carbonaceous materials, metals and oxides.
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Affiliation(s)
- Yingrui Zhang
- School of Chemistry and Chemical Engineering, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK
| | - Ziwei Ye
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, 200237, PR China
| | - Chunchun Li
- School of Chemistry and Chemical Engineering, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK
| | - Qinglu Chen
- School of Chemistry and Chemical Engineering, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK
| | - Wafaa Aljuhani
- School of Chemistry and Chemical Engineering, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK
| | - Yiming Huang
- School of Chemistry and Chemical Engineering, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK
| | - Xin Xu
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, MOE Key Laboratory of Computational Physical Sciences, Department of Chemistry, Fudan University, Shanghai, 200433, PR China
| | - Chunfei Wu
- School of Chemistry and Chemical Engineering, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK
| | - Steven E J Bell
- School of Chemistry and Chemical Engineering, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK
| | - Yikai Xu
- School of Chemistry and Chemical Engineering, Queen's University Belfast, University Road, Belfast, BT7 1NN, UK.
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Azhar U, Arif M, Bashir MS, Babar M, Sagir M, Yasin G. Functionalized Fe 3O 4-based methyl methacrylate Pickering PolyHIPE composites costabilized by fluorinated block copolymer for oil/water separation. CHEMOSPHERE 2022; 309:136526. [PMID: 36150494 DOI: 10.1016/j.chemosphere.2022.136526] [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: 06/01/2022] [Revised: 08/27/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
High internal phase emulsion (HIPE) technology has been emerged as a prodigious source to create tailor-made porous structures. This type of emulsion contains significantly higher amount of water in it, which is only possible with special type of stabilizers. Most specifically, the monomers with sufficiently high solubility in water such as methyl methacrylate (MMA) make it more cumbersome to stabilize in the form of HIPE. Here we have reported the combination of stabilizers including fluorinated block copolymer Poly (2-dimethylamino)ethyl methacrylate-b-Poly(trifluoroethyl methacrylate) (PDMAEMA-b-PTFEMA) and humic acid modified iron-oxide (HA-Fe3O4) nanoparticles (NPs) to stabilize HIPE, which resulted in highly porous and interconnected products. Fluorinated block copolymers with inherent hydrophobic nature along with iron oxide nanoparticles increased the water repellency of MMA based polymeric monoliths. Increasing the amount of stabilizer increased the porosity and BET specific surface area to 83.8% and 27 ± 0.8 μm, respectively. The prepared porous materials demonstrated hydrophobic characteristics while adsorbing oil from the surface of water up to 16 g/g. Moreover, the adsorbed oil from the prepared monolith was recovered by using simple centrifugation method without damaging the structure. This research opens new avenues to prepare more useful oil and water separation materials such as membranes, pollutant adsorbers, and so on.
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Affiliation(s)
- Umair Azhar
- Institute of Chemical and Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Punjab, Pakistan
| | - Muhammad Arif
- Institute of Chemical and Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Punjab, Pakistan.
| | - Muhammad Sohail Bashir
- Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, Anhui, 230601, China; Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.
| | - Muhammad Babar
- Institute of Chemical and Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Punjab, Pakistan
| | - Muhammad Sagir
- Institute of Chemical and Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Punjab, Pakistan
| | - Ghulam Yasin
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China.
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Dragos-Pinzaru OG, Buema G, Gherca D, Tabakovic I, Lupu N. Effect of the Preparation Conditions on the Catalytic Properties of CoPt for Highly Efficient 4-Nitrophenol Reduction. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6250. [PMID: 36143558 PMCID: PMC9501049 DOI: 10.3390/ma15186250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/02/2022] [Accepted: 09/06/2022] [Indexed: 06/15/2023]
Abstract
CoPt alloys with Pt contents from 15 to 90% were prepared using low-cost electrochemical deposition. Different samples were synthesized from electrochemical baths at pH = 2.5 and 5.5 in a solution with and without saccharin as an additive. The morphology, composition and crystalline structure of the as-prepared samples were investigated by High Resolution-Scanning Electron Microscopy (HR-SEM), Atomic Force Microscopy (AFM), Ultra-high Resolution-Transmission Electron Microscopy (UHR-TEM), Energy-Dispersive X-ray Spectroscopy (EDX), and X-ray Diffraction (XRD). XRD investigations revealed that fcc crystalline structure transforms into hcp crystalline structure when the pH of the electrochemical bath is increased from 2.5 to 5.5 as well as when saccharin is added to the electrochemical bath. The catalytic performance of the CoPt alloys for the nitro to amino phenol compounds conversion was investigated for all the prepared samples, and the results show that the conversion degree increases (from 11.4 to 96.5%) even though the Pt content in the samples decreases. From the samples prepared from the electrochemical bath with saccharin, a study regarding the effect of contact time was performed. The results indicated that after only 5 min, the CoPt sample prepared at pH = 5.5 in the presence of saccharin completely converted the nitro compound to an amino compound.
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Affiliation(s)
| | - Gabriela Buema
- National Institute of R&D for Technical Physics, 700050 Iasi, Romania
| | - Daniel Gherca
- National Institute of R&D for Technical Physics, 700050 Iasi, Romania
| | - Ibro Tabakovic
- ECE Department, University of Minnesota, Minneapolis, MN 55435, USA
| | - Nicoleta Lupu
- National Institute of R&D for Technical Physics, 700050 Iasi, Romania
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Chen F, Yan X, Hu X, Feng R, Li T, Li X, Zhao G. Enhanced catalytic reduction of p-nitrophenol and azo dyes on copper hexacyanoferrate nanospheres decorated copper foams. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 314:115075. [PMID: 35436705 DOI: 10.1016/j.jenvman.2022.115075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/26/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Catalytic reduction of nitroaromatic compounds using low-cost non-precious metal containing catalyst remains an essential topic in wastewater treatment. Herein, copper hexacyanoferrate nanospheres decorated copper foams (CF) were prepared by a facile method, and it was used as structured catalysts for the reduction of p-nitrophenol (p-NP) and azo dyes. The catalyst obtained by calcination at 200 °C shows the highest catalytic activity, with an almost complete reduction of p-NP within 3 min with a rate of 2.057 min-1 at room temperature, and it exhibited excellent reusability in successive 6 cycles. The effects of temperature, initial concentration, pH, and flow rate on p-NP reduction were investigated. Moreover, the mechanistic investigation revealed that fast electron transfer ability and enhanced adsorption for p-NP contributed to its enhanced catalytic performances. This work put forward an efficient approach for the construction of structured catalysts with enhanced performance in catalytic reduction applications.
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Affiliation(s)
- Fei Chen
- Jiangsu Province Engineering Research Center of Fine Utilization of Carbon Resources, School of Chemical Engineering & Technology, China University of Mining and Technology, XuZhou, 221116, PR China
| | - Xinlong Yan
- Jiangsu Province Engineering Research Center of Fine Utilization of Carbon Resources, School of Chemical Engineering & Technology, China University of Mining and Technology, XuZhou, 221116, PR China.
| | - Xiaoyan Hu
- Jiangsu Province Engineering Research Center of Fine Utilization of Carbon Resources, School of Chemical Engineering & Technology, China University of Mining and Technology, XuZhou, 221116, PR China
| | - Rui Feng
- Jiangsu Province Engineering Research Center of Fine Utilization of Carbon Resources, School of Chemical Engineering & Technology, China University of Mining and Technology, XuZhou, 221116, PR China
| | - Tianbo Li
- Jiangsu Province Engineering Research Center of Fine Utilization of Carbon Resources, School of Chemical Engineering & Technology, China University of Mining and Technology, XuZhou, 221116, PR China
| | - Xiaobing Li
- National Center for Coal Preparation and Purification Engineering Research, China University of Mining and Technology, Xuzhou, Jiangsu, 221116, PR China.
| | - Guofeng Zhao
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, People's Republic of China
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Nishizawa Y, Watanabe T, Noguchi T, Takizawa M, Song C, Murata K, Minato H, Suzuki D. Durable gelfoams stabilized by compressible nanocomposite microgels. Chem Commun (Camb) 2022; 58:12927-12930. [DOI: 10.1039/d2cc04993g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Compressible nanocomposite microgels can stabilize the air/water interfaces of gas bubbles for several months, which affords durable gelfoams.
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Affiliation(s)
- Yuichiro Nishizawa
- Graduate School of Textile Science & Technology, Shinshu University, Japan
| | - Takumi Watanabe
- Graduate School of Textile Science & Technology, Shinshu University, Japan
| | - Tetsuya Noguchi
- Graduate School of Textile Science & Technology, Shinshu University, Japan
| | - Masaya Takizawa
- Graduate School of Textile Science & Technology, Shinshu University, Japan
| | - Chihong Song
- National Institute for Physiological Sciences and Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Japan
| | - Kazuyoshi Murata
- National Institute for Physiological Sciences and Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Japan
| | - Haruka Minato
- Graduate School of Textile Science & Technology, Shinshu University, Japan
| | - Daisuke Suzuki
- Graduate School of Textile Science & Technology, Shinshu University, Japan
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research Institution, Shinshu University, Japan
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