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Tang Q, Zhong L, Tang C, Huang Y. Unified theoretical framework for temperature regulation via phase transition. Phys Rev E 2024; 110:014112. [PMID: 39161013 DOI: 10.1103/physreve.110.014112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 06/11/2024] [Indexed: 08/21/2024]
Abstract
Phase transition usually consumes or releases energy to produce cooling or heating within different materials, providing a generalized framework for temperature regulation in practical applications. Because of the strong coupling between the enthalpy change in thermodynamics and heat-mass transfer kinetics, unveiling the mechanism of temperature regulation via the phase transition remains a great challenge. Here, we develop a new theoretical method by establishing a connection of enthalpy change from thermodynamics to phase transition dynamics to study evaporation-induced cooling as an example. Our new approach can spontaneously generate evaporative cooling at interfaces, and the predicted results are consistent with recent experiments. The evaporation-induced steady vapor is dictated by an anomalous cold-to-hot mass transfer through temperature-dependent chemical potentials, which enables temperature regulation inside liquids via a thermodynamic-kinetic interplay. Moreover, we show that a simple prohibition of heat exchange between liquids and reservoir can greatly enhance the cooling magnitude by a factor of 2∼4, which is highly dependent on the thermodynamics and kinetic coefficients of liquids. Our new method paves the way for exploration of cooling or heating induced by different phase transitions, such as evaporation, sublimation, or condensation, in a unified framework, which can significantly promote the development of temperature regulation by phase transitions.
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Scala-Benuzzi M, Fernández SN, Giménez G, Ybarra G, Soler-Illia GJAA. Ordered Mesoporous Electrodes for Sensing Applications. ACS OMEGA 2023; 8:24128-24152. [PMID: 37457464 PMCID: PMC10339336 DOI: 10.1021/acsomega.3c02013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 06/09/2023] [Indexed: 07/18/2023]
Abstract
Electrochemical sensors have become increasingly relevant in fields such as medicine, environmental monitoring, and industrial process control. Selectivity, specificity, sensitivity, signal reproducibility, and robustness are among the most important challenges for their development, especially when the target compound is present in low concentrations or in complex analytical matrices. In this context, electrode modification with Mesoporous Thin Films (MTFs) has aroused great interest in the past years. MTFs present high surface area, uniform pore distribution, and tunable pore size. Furthermore, they offer a wide variety of electrochemical signal modulation possibilities through molecular sieving, electrostatic or steric exclusion, and preconcentration effects which are due to mesopore confinement and surface functionalization. In order to fully exploit these advantages, it is central to develop reproducible routes for sensitive, selective, and robust MTF-modified electrodes. In addition, it is necessary to understand the complex mass and charge transport processes that take place through the film (particularly in the mesopores, pore surfaces, and interfaces) and on the electrode in order to design future intelligent and adaptive sensors. We present here an overview of MTFs applied to electrochemical sensing, in which we address their fabrication methods and the transport processes that are critical to the electrode response. We also summarize the current applications in biosensing and electroanalysis, as well as the challenges and opportunities brought by integrating MTF synthesis with electrode microfabrication, which is critical when moving from laboratory work to in situ sensing in the field of interest.
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Affiliation(s)
- María
L. Scala-Benuzzi
- INTI-Micro
y Nanotecnologías, Instituto Nacional
de Tecnología Industrial, Av. Gral. Paz 5445, 1560 San Martín, Buenos
Aires, Argentina
- Instituto
de Nanosistemas, Escuela de Bio y Nanotecnologías, UNSAM-CONICET, Av. 25 de Mayo 1169, 1650 San Martín, Provincia de Buenos Aires, Argentina
| | - Sol N. Fernández
- INTI-Micro
y Nanotecnologías, Instituto Nacional
de Tecnología Industrial, Av. Gral. Paz 5445, 1560 San Martín, Buenos
Aires, Argentina
- Instituto
de Nanosistemas, Escuela de Bio y Nanotecnologías, UNSAM-CONICET, Av. 25 de Mayo 1169, 1650 San Martín, Provincia de Buenos Aires, Argentina
- Instituto
de Calidad Industrial (INCALIN-UNSAM), Av. 25 de Mayo y Francia, 1650 San Martín, Provincia
de Buenos Aires Argentina
| | - Gustavo Giménez
- INTI-Micro
y Nanotecnologías, Instituto Nacional
de Tecnología Industrial, Av. Gral. Paz 5445, 1560 San Martín, Buenos
Aires, Argentina
| | - Gabriel Ybarra
- INTI-Micro
y Nanotecnologías, Instituto Nacional
de Tecnología Industrial, Av. Gral. Paz 5445, 1560 San Martín, Buenos
Aires, Argentina
| | - Galo J. A. A. Soler-Illia
- Instituto
de Nanosistemas, Escuela de Bio y Nanotecnologías, UNSAM-CONICET, Av. 25 de Mayo 1169, 1650 San Martín, Provincia de Buenos Aires, Argentina
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Tang Q, Müller M. Evaporation-Induced Liquid Expansion and Bubble Formation in Binary Mixtures. PHYSICAL REVIEW LETTERS 2021; 126:028003. [PMID: 33512230 DOI: 10.1103/physrevlett.126.028003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
We observe an anomalous liquid expansion after quenching a binary mixture at coexistence to low pressures in the vapor phase by numerical calculations. This evaporation-induced expansion can be attributed to the pressure imbalance near the liquid-vapor interface, which originates from the interplay between the complex thermodynamics of binary mixtures both in the vapor and liquid phases, as well as their dynamical asymmetries. In addition, careful modulation of the pressure quench in the vapor phase can result in spinodal bubble formation inside liquid phase. The results indicate that the thermodynamics-kinetics interplay could foster our fundamental understanding of the evaporation process and promote its practical applications.
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Affiliation(s)
- Qiyun Tang
- Institut für Theoretische Physik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - Marcus Müller
- Institut für Theoretische Physik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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Caraballo RM, Vensaus P, Herrera FC, Soler Illia GJAA, Hamer M. Zinc porphyrin/mesoporous titania thin film electrodes: a hybrid material nanoarchitecture for photocatalytic reduction. RSC Adv 2021; 11:31124-31130. [PMID: 35498941 PMCID: PMC9041319 DOI: 10.1039/d1ra06585h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 09/10/2021] [Indexed: 11/21/2022] Open
Abstract
In this work, photocatalytic reduction of methyl viologen is achieved using zinc tetra(4-N-methylpyridyl)porphine (ZnP) functionalized mesoporous titania thin films (MTTF). Also, ZnP sensitizing and photophysical properties are retained in the hybrid material.
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Affiliation(s)
- Rolando M. Caraballo
- Instituto de Nanosistemas, Universidad Nacional de General San Martín-CONICET, Av. 25 de Mayo 1021 (B1650KNA), San Martín, Argentina
| | - Priscila Vensaus
- Instituto de Nanosistemas, Universidad Nacional de General San Martín-CONICET, Av. 25 de Mayo 1021 (B1650KNA), San Martín, Argentina
| | - Facundo C. Herrera
- Instituto de Nanosistemas, Universidad Nacional de General San Martín-CONICET, Av. 25 de Mayo 1021 (B1650KNA), San Martín, Argentina
| | - Galo J. A. A. Soler Illia
- Instituto de Nanosistemas, Universidad Nacional de General San Martín-CONICET, Av. 25 de Mayo 1021 (B1650KNA), San Martín, Argentina
| | - Mariana Hamer
- Instituto de Nanosistemas, Universidad Nacional de General San Martín-CONICET, Av. 25 de Mayo 1021 (B1650KNA), San Martín, Argentina
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Hu M, Jin L, Dang Y, Suib SL, He J, Liu B. Supported Pt Nanoparticles on Mesoporous Titania for Selective Hydrogenation of Phenylacetylene. Front Chem 2020; 8:581512. [PMID: 33330371 PMCID: PMC7718006 DOI: 10.3389/fchem.2020.581512] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 09/14/2020] [Indexed: 11/26/2022] Open
Abstract
Semi-hydrogenation of alkynes to alkenes is one of the most important industrial reactions. However, it remains technically challenging to obtain high alkene selectivity especially at a high alkyne conversion because of kinetically favorable over hydrogenation. In this contribution, we show that supported ultrasmall Pt nanoparticles (2.5 nm) on mesoporous TiO2 (Pt@mTiO2) remarkably improve catalytic performance toward semi-hydrogenation of phenylacetylene. Pt@mTiO2 is prepared by co-assembly of Pt and Ti precursors with silica colloidal templates via an evaporation-induced self-assembly process, followed by further calcination for thermal decomposition of Pt precursors and crystallization of mTiO2 simultaneously. As-resultant Pt@mTiO2 discloses a high hydrogenation activity of phenylacetylene, which is 2.5 times higher than that of commercial Pt/C. More interestingly, styrene selectivity over Pt@mTiO2 remains 100% in a wide phenylacetylene conversion window (20–75%). The styrene selectivity is >80% even at 100% phenylacetylene conversion while that of the commercial Pt/C is 0%. The remarkable styrene selectivity of the Pt@mTiO2 is derived from the weakened styrene adsorption strength on the atop Pt sites as observed by diffuse reflectance infrared Fourier transform spectroscopy with CO as a probe molecule (CO-DRIFTS). Our strategy provides a new avenue for promoting alkyne to alkene transformation in the kinetically unfavorable region through novel catalyst preparation.
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Affiliation(s)
- Mingzhen Hu
- Jiangsu Key Laboratory of New Power Batteries, Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China.,Department of Chemistry, University of Connecticut, Mansfield, CT, United States
| | - Lei Jin
- Department of Chemistry, University of Connecticut, Mansfield, CT, United States
| | - Yanliu Dang
- Institute of Materials Science, University of Connecticut, Mansfield, CT, United States
| | - Steven L Suib
- Department of Chemistry, University of Connecticut, Mansfield, CT, United States.,Institute of Materials Science, University of Connecticut, Mansfield, CT, United States
| | - Jie He
- Department of Chemistry, University of Connecticut, Mansfield, CT, United States.,Institute of Materials Science, University of Connecticut, Mansfield, CT, United States
| | - Ben Liu
- Jiangsu Key Laboratory of New Power Batteries, Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China
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Designing and Fabricating Ordered Mesoporous Metal Oxides for CO₂ Catalytic Conversion: A Review and Prospect. MATERIALS 2019; 12:ma12020276. [PMID: 30654472 PMCID: PMC6356952 DOI: 10.3390/ma12020276] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/07/2019] [Accepted: 01/10/2019] [Indexed: 12/20/2022]
Abstract
In the past two decades, great progress has been made in the aspects of fabrication and application of ordered mesoporous metal oxides. Ordered mesoporous metal oxides have attracted more and more attention due to their large surface areas and pore volumes, unblocked pore structure, and good thermal stabilities. Compared with non-porous metal oxides, the most prominent feature is their ability to interact with molecules not only on their outer surface but also on the large internal surfaces of the material, providing more accessible active sites for the reactants. This review carefully describes the characteristics, classification and synthesis of ordered mesoporous metal oxides in detail. Besides, it also summarizes the catalytic application of ordered mesoporous metal oxides in the field of carbon dioxide conversion and resource utilization, which provides prospective viewpoints to reduce the emission of greenhouse gas and the inhibition of global warming. Although the scope of current review is mainly limited to the ordered mesoporous metal oxides and their application in the field of CO2 catalytic conversion via heterogeneous catalysis processes, we believe that it will provide new insights and viewpoints to the further development of heterogeneous catalytic materials.
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Cui Y, Xu L, Chen M, Lian X, Wu CE, Yang B, Miao Z, Wang F, Hu X. Facilely fabricating mesoporous nanocrystalline Ce–Zr solid solution supported CuO-based catalysts with advanced low-temperature activity toward CO oxidation. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01612k] [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
The synergistic effect between CuO and mesoporous Ce–Zr solid solution greatly enhanced the advanced low-temperature catalytic activity toward CO oxidation.
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Affiliation(s)
- Yan Cui
- Collaborative Innovation Center of the Atmospheric Environment and Equipment Technology
- School of Environmental Science and Engineering
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control
- Nanjing University of Information Science & Technology
- Nanjing
| | - Leilei Xu
- Collaborative Innovation Center of the Atmospheric Environment and Equipment Technology
- School of Environmental Science and Engineering
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control
- Nanjing University of Information Science & Technology
- Nanjing
| | - Mindong Chen
- Collaborative Innovation Center of the Atmospheric Environment and Equipment Technology
- School of Environmental Science and Engineering
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control
- Nanjing University of Information Science & Technology
- Nanjing
| | - Xinbo Lian
- Collaborative Innovation Center of the Atmospheric Environment and Equipment Technology
- School of Environmental Science and Engineering
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control
- Nanjing University of Information Science & Technology
- Nanjing
| | - Cai-e Wu
- College of Light Industry and Food Engineering
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Bo Yang
- Collaborative Innovation Center of the Atmospheric Environment and Equipment Technology
- School of Environmental Science and Engineering
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control
- Nanjing University of Information Science & Technology
- Nanjing
| | - Zhichao Miao
- School of Chemistry and Chemical Engineering
- Shandong University of Technology
- Zibo 255049
- PR China
| | - Fagen Wang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Xun Hu
- School of Material Science and Engineering
- University of Jinan
- Jinan
- P.R. China
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