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Mysore Ramesha B, Pawlak B, Arenas Esteban D, Reekmans G, Bals S, Marchal W, Carleer R, Adriaensens P, Meynen V. Partial Hydrolysis of Diphosphonate Ester During the Formation of Hybrid TiO 2 Nanoparticles: Role of Acid Concentration. Chemphyschem 2023; 24:e202300437. [PMID: 37669423 DOI: 10.1002/cphc.202300437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/03/2023] [Accepted: 09/05/2023] [Indexed: 09/07/2023]
Abstract
The hydrolysis of the phosphonate ester linker during the synthesis of hybrid (organic-inorganic) TiO2 nanoparticles is important when forming porous hybrid organic-inorganic metal phosphonates. In the present work, a method was utilized to control the in-situ partial hydrolysis of diphosphonate ester in the presence of a titania precursor as a function of acid content, and its impact on the hybrid nanoparticles was assessed. Organodiphosphonate esters, and more specific, their hydrolysis degree during the formation of hybrid organic-inorganic metal oxide nanoparticles, are relatively under explored as linkers. Here, a detailed analysis on the hydrolysis of tetraethyl propylene diphosphonate ester (TEPD) as diphosphonate linker to produce hybrid TiO2 nanoparticles is discussed as a function of acid content. Quantitative solution NMR spectroscopy revealed that during the synthesis of TiO2 nanoparticles, an increase in acid concentration introduces a higher degree of partial hydrolysis of the TEPD linker into diverse acid/ester derivatives of TEPD. Increasing the HCl/Ti ratio from 1 to 3, resulted in an increase in degree of partial hydrolysis of the TEPD linker in solution from 4 % to 18.8 % under the applied conditions. As a result of the difference in partial hydrolysis, the linker-TiO2 bonding was altered. Upon subsequent drying of the colloidal TiO2 solution, different textures, at nanoscale and macroscopic scale, were obtained dependent on the HCl/Ti ratio and thus the degree of hydrolysis of TEPD. Understanding such linker-TiO2 nanoparticle surface dynamics is crucial for making hybrid organic-inorganic materials (i. e. (porous) metal phosphonates) employed in applications such as electronic/photonic devices, separation technology and heterogeneous catalysis.
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Affiliation(s)
- Bharadwaj Mysore Ramesha
- Laboratory of Adsorption and Catalysis (LADCA), Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Bram Pawlak
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Daniel Arenas Esteban
- Electron Microscopy for Materials Research (EMAT), NANOlab Centre of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Gunter Reekmans
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Sara Bals
- Electron Microscopy for Materials Research (EMAT), NANOlab Centre of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Wouter Marchal
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Robert Carleer
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Peter Adriaensens
- Analytical and Circular Chemistry (ACC), Institute for Materials Research (IMO-IMOMEC), University of Hasselt, Agoralaan 1, 3590, Diepenbeek, Belgium
| | - Vera Meynen
- Laboratory of Adsorption and Catalysis (LADCA), Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
- Sustainable Materials Management, Flemish Institute for Technological Research (VITO NV), Boeretang 200, 2400, Mol, Belgium
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Cao J, Poon CT, Chan MHY, Hong EYH, Cheng YH, Hau FKW, Wu L, Yam VWW. Lamellar assembly and nanostructures of amphiphilic boron( iii) diketonates through suitable non-covalent interactions. Org Chem Front 2023. [DOI: 10.1039/d3qo00031a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Cooperative assemblies of amphiphilic boron(iii) diketonate compounds, which are found to be driven by the formation of non-covalent π–π and hydrophobic interactions in THF–water solution, result in the construction of nanosheet of lamellar packing.
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Affiliation(s)
- Jingjie Cao
- State Key Laboratory of Supramolecular Structure and Materials and College of Chemistry, Jilin University, Changchun 130012, P. R. China
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Chun-Ting Poon
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Michael Ho-Yeung Chan
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Eugene Yau-Hin Hong
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Yat-Hin Cheng
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Franky Ka-Wah Hau
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials and College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Vivian Wing-Wah Yam
- State Key Laboratory of Supramolecular Structure and Materials and College of Chemistry, Jilin University, Changchun 130012, P. R. China
- Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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Advances and Challenges in the Creation of Porous Metal Phosphonates. MATERIALS 2020; 13:ma13235366. [PMID: 33256025 PMCID: PMC7734583 DOI: 10.3390/ma13235366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 01/02/2023]
Abstract
In the expansive world of porous hybrid materials, a category of materials that has been rather less explored than others and is gaining attention in development is the porous metal phosphonates. They offer promising features towards applications which demand control over the inorganic–organic network and interface, which is critical for adsorption, catalysis and functional devices and technology. The need to establish a rationale for new synthesis approaches to make these materials in a controlled manner is by itself an important motivation for material chemists. In this review, we highlight the various synthetic strategies exploited, discussing various metal phosphonate systems and how they influence the properties of porous metal phosphonates. We discuss porous metal phosphonate systems based on transition metals with an emphasis on addressing challenges with tetravalent metals. Finally, this review provides a brief description of some key areas of application that are ideally suited for porous metal phosphonates.
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Maruoka H, Kimura T. The rational synthesis of aerosol-assisted alumina powders having uniform mesopores and highly accessible surfaces. NEW J CHEM 2019. [DOI: 10.1039/c9nj01319a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several important factors to fabricate high-quality aerosol-assisted mesoporous alumina powders are summarized by considering rational and reliable synthetic routes.
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Affiliation(s)
- Hirokazu Maruoka
- National Institute of Advanced Industrial Science and Technology (AIST)
- Shimoshidami
- Moriyama-ku
- Nagoya 463-8560
- Japan
| | - Tatsuo Kimura
- National Institute of Advanced Industrial Science and Technology (AIST)
- Shimoshidami
- Moriyama-ku
- Nagoya 463-8560
- Japan
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