1
|
Suriyawong S, Khumphon J, Rattanakam R, Chaopanich P, Thongmee S, Youngjan S, Khemthong P, Kityakarn S. Engineering three-dimensionally ordered mesoporous structure of TiO2 for the fast responsive NH3 gas sensor at ambient conditions. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
|
2
|
Shimasaki Y, Matsuno T, Guo Q, Shimojima A, Wada H, Mori T, Kuroda K. Preparation of mesoporous nitrogen-doped titania comprising large crystallites with low thermal conductivity. NANOSCALE ADVANCES 2022; 4:2509-2520. [PMID: 36134133 PMCID: PMC9417602 DOI: 10.1039/d2na00083k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 05/08/2022] [Indexed: 06/16/2023]
Abstract
Reducing the thermal conductivity (κ) of mesoporous N-doped titania (TiO2) is crucial for the development of TiO2-based materials that exhibit excellent electronic, photochemical, and thermoelectric properties. Mesopores can contribute to the reduction of κ via phonon scattering, and the scattering effect due to the randomness of crystal interfaces should be significantly reduced to clarify the role of mesopores in reducing thermal conductivity. Highly ordered mesoporous N-doped TiO2 comprising large crystallites was prepared with silica colloidal crystals as a template into which a Ti source was introduced, followed by calcination with urea. N-doped samples comprising large crystallites exhibiting random mesopores were also prepared and used for the investigation of the effects of the shape and arrangement of the mesopore on phonon scattering. The mesostructures of the two separately prepared N-doped TiO2 samples were retained after sintering at 873 K and 80 MPa to fabricate pellets. Furthermore, the effective suppression of the long mean-free-path phonon conduction by the thin pore walls at a nanometer scale thickness significantly reduced the thermal conductivities of both samples. The presence of ordered mesopores further contributed to the reduction of κ, which was probably due to the enhanced contribution of the backscattering of phonons caused by ordered pore wall surfaces.
Collapse
Affiliation(s)
- Yuta Shimasaki
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
| | - Takamichi Matsuno
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
| | - Quansheng Guo
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University 2-8-26 Nishiwaseda, Shinjuku-ku Tokyo 169-0051 Japan
| | - Hiroaki Wada
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University 2-8-26 Nishiwaseda, Shinjuku-ku Tokyo 169-0051 Japan
| | - Takao Mori
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
- Graduate School of Pure and Applied Sciences, University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8577 Japan
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, School of Advanced Science and Engineering, Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University 2-8-26 Nishiwaseda, Shinjuku-ku Tokyo 169-0051 Japan
| |
Collapse
|
3
|
Poolwong J, Kiatboonyarit T, Achiwawanich S, Butburee T, Khemthong P, Kityakarn S. Three-Dimensional Hierarchical Porous TiO 2 for Enhanced Adsorption and Photocatalytic Degradation of Remazol Dye. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1715. [PMID: 34209736 PMCID: PMC8307786 DOI: 10.3390/nano11071715] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 11/16/2022]
Abstract
Three-dimensional hierarchical mesoporous structures of titanium dioxide (3D-HPT) were synthesized by self-assembly emulsion polymerization. Polymethyl methacrylate (PMMA) and pluronic 123 (P123) were used as the soft templates and co-templates for assisting the formation of hierarchical 3D porous structures. The TiO2 crystal structure, morphology, and Remazol red dye degradation were investigated. The 3D-HPT and normal three-dimensional titanium dioxide (3D-T) presented the good connection of the nanoparticle-linked honeycomb within the form of anatase. The 3D-HPT structure showed greatly enhanced adsorption of Remazol dye, and facilitated the efficient photocatalytic breakdown of the dye. Surprisingly, 3D-HPT can adsorb approximately 40% of 24 ppm Remazol dye in the dark, which is superior to 3D-T and the commercial anatase at the same condition (approx. 5%). Moreover, 3D-HPT can completely decolorize Remazol dye within just 20 min, which is more than three folds faster than the commercial anatase, making it one of the most active photocatalysts that have been reported for degradation of Remazol dye. The superior photocatalytic performance is attributed to the higher specific surface area, amplified light-harvesting efficiency, and enhanced adsorption capacity into the hierarchical 3D inverse opal structure compared to the commercial anatase TiO2.
Collapse
Affiliation(s)
- Jitpisut Poolwong
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.P.); (T.K.); (S.A.)
| | - Tanya Kiatboonyarit
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.P.); (T.K.); (S.A.)
| | - Supakit Achiwawanich
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.P.); (T.K.); (S.A.)
| | - Teera Butburee
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Klong Laung, Pathumthani 12120, Thailand;
| | - Pongtanawat Khemthong
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Klong Laung, Pathumthani 12120, Thailand;
| | - Sutasinee Kityakarn
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; (J.P.); (T.K.); (S.A.)
| |
Collapse
|
4
|
Lu J, Wen Z, Zhang Y, Cheng G, Xu R, Gong X, Wang X, Chen R. New insights on nanostructure of ordered mesoporous FeMn bimetal oxides (OMFMs) by a novel inverse micelle method and their superior arsenic sequestration performance: Effect of calcination temperature and role of Fe/Mn oxides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 762:143163. [PMID: 33131836 DOI: 10.1016/j.scitotenv.2020.143163] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 06/11/2023]
Abstract
A series of ordered mesoporous FeMn bimetal oxides (OMFMs) were fabricated by using a novel inverse micelle method, and the texture, nanostructure and interface chemistry properties of OMFMs were closely correlated to the calcination temperature. Due to the amorphous regular inner-connected nanostructure and bimetallic synergistic effect, the obtained OMFMs exhibited superior arsenic sequestration performance than pure mesoporous Fe oxides (PMF) and Mn oxides (PMM). The optimum ratio of Fe/Mn and calcination temperature for arsenic removal was 3/1 and 350 °C (OMFM-3), and the maximum As(III) and As(V) adsorption capacities of OMFM-3 were 174.59 and 134.58 mg/g, respectively. Solution pH value negligibly affected the uptake of arsenic (ranged from 3.0 to 7.0), while SiO32-/PO43- ions and humic acid (HA) displayed significant inhibitory effect on arsenic removal by OMFM-3. According to the mechanism of arsenic removal, which simultaneously analyzed the arsenic redox transformation in aqueous phase and on solid phase interface, it was concluded that manganese oxides in OMFM-3 mainly played the role as a remarkable As(III) oxidant in water, whereas iron oxides dominantly acted as an excellent arsenic species adsorbent. Finally, the prominent arsenic sequestration behavior and performance in surface water suggested that OMFM-3 could be a promising and hopeful candidate for arsenic-contaminated (especially As(III)) surface water and groundwater remediation and treatment.
Collapse
Affiliation(s)
- Jun Lu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, People's Republic of China
| | - Zhipan Wen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, People's Republic of China.
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China
| | - Gang Cheng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, People's Republic of China
| | - Rui Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, People's Republic of China
| | - Xiaohu Gong
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, People's Republic of China
| | - Xin Wang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, People's Republic of China
| | - Rong Chen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, People's Republic of China
| |
Collapse
|
5
|
Muramoto N, Sugiyama T, Matsuno T, Wada H, Kuroda K, Shimojima A. Preparation of periodic mesoporous organosilica with large mesopores using silica colloidal crystals as templates. NANOSCALE 2020; 12:21155-21164. [PMID: 32724951 DOI: 10.1039/d0nr03837g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Organosiloxane-based mesoporous materials with periodically ordered pores (periodic mesoporous organosilica, PMO) have many applications due to their various organic functions, high surface areas, and large pore volumes. Conventional methods using surfactant templates (soft templates) are limited in terms of the diversity of organosilane precursors and precise control over the pore size in a relatively large mesopore region (10-50 nm). This paper demonstrates the preparation of PMOs with precisely controlled pore sizes (>10 nm in diameter) and various organosiloxane frameworks, using colloidal crystals of monodisperse silica nanospheres as a template. An inverse opal structure with interconnected spherical mesopores was obtained through polycondensation of hydrolyzed organoalkoxysilanes [(EtO)3Si-R-Si(OEt)3, R = C2H4, CH[double bond, length as m-dash]CH, and C6H4; PhSi(OEt)3], within the voids of silica colloidal crystals, followed by the preferential dissolution of silica under well-controlled basic conditions. The pore size varied depending on the size of the silica nanospheres. The versatility of this method will allow for the wide tuning of the physical and chemical properties of organosiloxane-based mesoporous materials.
Collapse
Affiliation(s)
- Naho Muramoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan.
| | - Tomoaki Sugiyama
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan.
| | - Takamichi Matsuno
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan.
| | - Hiroaki Wada
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan.
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan. and Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan. and Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku-ku, Tokyo 169-0051, Japan
| |
Collapse
|
6
|
Wen Z, Lu J, Zhang Y, Cheng G, Huang S, Chen J, Xu R, Ming YA, Wang Y, Chen R. Facile inverse micelle fabrication of magnetic ordered mesoporous iron cerium bimetal oxides with excellent performance for arsenic removal from water. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121172. [PMID: 31522062 DOI: 10.1016/j.jhazmat.2019.121172] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 08/27/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
In this study, magnetic ordered mesoporous Fe/Ce bimetal oxides (OMICs) were successfully synthesized via the modified sol-gel-based inverse micelle method. The textural/structure properties, surface chemistry and adsorption behavior of OMICs could be easily adjusted by using the calcination temperature. The sintering of samples would decrease the surface area, while expand the pore and crystallite size, which resulted in the formation of highly ordered inner-connected structure. Compared with pure mesoporous iron oxides (MI) and mesoporous cerium oxides (MC), this ordered mesoporous iron-cerium bimetal oxides (OMIC-3, 450 °C) exhibited remarkable arsenic adsorption performance. The maximum adsorption capacities of As(III) and As(V) for OMIC-3 were 281.34 and 216.72 mg/g, respectively, and both As(III)/As(V) adsorption kinetics were well described by the pseudo-second order. The ionic strength and coexisting ions (except SiO32- and PO43-) did not affect arsenic removal, while humic acid (HA) significantly influenced on the arsenic removal even at a lower concentration. The adsorption mechanism study revealed that both the surface charge and surface M-OH groups of OMIC-3 were played the key roles in arsenic removal. The reusable property suggested that this magnetic OMIC-3 was a promising excellent adsorbent for decontamination of arsenic-polluted (especially As(III)-polluted) wastewater.
Collapse
Affiliation(s)
- Zhipan Wen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China.
| | - Jun Lu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, People's Republic of China
| | - Gang Cheng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China.
| | - Shengnan Huang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Jin Chen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Rui Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Yin-An Ming
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Yingru Wang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China
| | - Rong Chen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, People's Republic of China.
| |
Collapse
|
7
|
Lina Z, Yue D, Zhenran G, Lei J, Du X. Promotion of oxidative desulfurization performance of model fuel by 3DOM Ce-doped HPW/TiO2 material. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2019.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
8
|
Facile synthesis of functionalized polymer microsphere with three-dimensionally ordered macroporous structure by a colloidal crystal templating method. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4335-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|