1
|
Gnanamani MK, Rajabathar JR. Defects chemistry and catalysis of Indium oxide. METAL OXIDE DEFECTS 2023:665-690. [DOI: 10.1016/b978-0-323-85588-4.00004-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
|
2
|
Chakrabortty P, Ghosh S, Das A, Khan A, Islam SM. Visible-light-driven sustainable conversion of carbon dioxide to methanol using a metal-free covalent organic framework as a recyclable photocatalyst. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00088a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A 2D covalent organic framework (COF) was synthesized by copolymerization between 4,4′-biphenyldicarbaldehyde and 1,3,5-tris-(4-aminophenyl) triazine (TAPT). This COF exhibited excellent photocatalytic performance for the CO2 reduction to methanol.
Collapse
Affiliation(s)
- Pekham Chakrabortty
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, 741235, W.B., India
| | - Swarbhanu Ghosh
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, 741235, W.B., India
| | - Anjan Das
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, 741235, W.B., India
| | - Aslam Khan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Sk. Manirul Islam
- Department of Chemistry, University of Kalyani, Kalyani, Nadia, 741235, W.B., India
| |
Collapse
|
3
|
Dasari S, Nagaraju P, Yelsani V, Tirumala S, M V RR. Nanostructured Indium Oxide Thin Films as a Room Temperature Toluene Sensor. ACS OMEGA 2021; 6:17442-17454. [PMID: 34278130 PMCID: PMC8280699 DOI: 10.1021/acsomega.1c01831] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
Toluene gas is the most toxic and affects the respiratory system of humans, and thereby, its detection at lower levels is an important task. Herein, we report a room temperature-operatable indium oxide-based chemiresistive gas sensor, which detects 50 ppm toluene vapors. Nanocrystalline indium oxide (In2O3) films were sprayed on a pre-cleaned glass substrate using a cost-effective spray pyrolysis method at different substrate temperatures in the range of 350-500 °C. The X-ray diffraction studies confirmed that the sprayed thin films, which were deposited at different substrate temperatures, exhibit a cubic structure. The preferred orientation was aligned along the (222) orientation. Average crystallite size calculation based on the Scherrer formula indicates that the crystallite size increases with the enhancement of substrate temperature. FESEM analysis showed that the indium oxide thin films possess uniform grain distribution, which persists over the entire substrate. As the substrate temperature is increased, a partial agglomeration in the film morphology was observed. The deposited film's nanostructured nature was confirmed by transmission electron microscopy, and the polycrystalline nature was confirmed from the selected area electron diffraction pattern. Root mean square roughness of the samples was determined from the atomic force microscopy studies. From the Raman spectra, characteristic vibrational modes appeared at 558.61, 802.85, and 1097.18 cm-1 in all the samples, which confirms the cubic structure of indium oxide thin films. Photoluminescence emission spectra have been recorded with an excitation wavelength of 280 nm. The optical band gap was measured using the Tauc plot. The band gap was found to decrease with an increase in the substrate temperature. The gas-sensing performance of indium oxide films sprayed at various substrate temperatures has demonstrated a better response toward 50 ppm toluene gas at room temperature with good stability, and the response and recovery times were determined using a transient response curve.
Collapse
Affiliation(s)
- Sunil
Gavaskar Dasari
- Thin
Films & Nanomaterials Research Laboratory, Department of Physics, Osmania University, Hyderabad, Telangana State 500 007, India
| | - Pothukanuri Nagaraju
- Nanosensor
Research Laboratory, Department of Physics, CMR Technical Campus, Kandlaokoya, Hyderabad, Telangana State 501 401, India
| | - Vijayakumar Yelsani
- Department
of Physics, Anurag University, Hyderabad, Telangana State 500 088, India
| | - Sreekanth Tirumala
- Department
of Physics, JNTUH College of Engineering
Jagtial, Nachupally (Kondagattu), Jagtial Dist, Telangana State 505 501, India
| | - Ramana Reddy M V
- Thin
Films & Nanomaterials Research Laboratory, Department of Physics, Osmania University, Hyderabad, Telangana State 500 007, India
| |
Collapse
|
4
|
Highlights and challenges in the selective reduction of carbon dioxide to methanol. Nat Rev Chem 2021; 5:564-579. [PMID: 37117584 DOI: 10.1038/s41570-021-00289-y] [Citation(s) in RCA: 108] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2021] [Indexed: 12/15/2022]
Abstract
Carbon dioxide (CO2) is the iconic greenhouse gas and the major factor driving present global climate change, incentivizing its capture and recycling into valuable products and fuels. The 6H+/6e- reduction of CO2 affords CH3OH, a key compound that is a fuel and a platform molecule. In this Review, we compare different routes for CO2 reduction to CH3OH, namely, heterogeneous and homogeneous catalytic hydrogenation, as well as enzymatic catalysis, photocatalysis and electrocatalysis. We describe the leading catalysts and the conditions under which they operate, and then consider their advantages and drawbacks in terms of selectivity, productivity, stability, operating conditions, cost and technical readiness. At present, heterogeneous hydrogenation catalysis and electrocatalysis have the greatest promise for large-scale CO2 reduction to CH3OH. The availability and price of sustainable electricity appear to be essential prerequisites for efficient CH3OH synthesis.
Collapse
|
5
|
Baig U, Khan A, Gondal MA, Dastageer MA, Falath WS. Laser Induced Anchoring of Nickel Oxide Nanoparticles on Polymeric Graphitic Carbon Nitride Sheets Using Pulsed Laser Ablation for Efficient Water Splitting under Visible Light. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1098. [PMID: 32498231 PMCID: PMC7353223 DOI: 10.3390/nano10061098] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 11/16/2022]
Abstract
A visible-light-active nickel oxide-graphitic carbon nitride (NiO@g-CN) hetero-structured nanocomposite was synthesized for the first time by pulsed laser ablation in liquid and used as a photoanode material in photoelectrochemical water-splitting reaction with a solar simulator. It was found that the photoelectrochemical performance of PLAL synthesized NiO@g-CN nanocomposite as photoanode, compared to g-CN as photoanode showed fourfold enhancements in photocurrent density under visible light. FT-IR, XRD, FE-SEM, and EDX consistently showed the proper anchoring of nano-sized NiO on g-CN. UV-DRS and the band gap estimation showed the narrowing down of the band gap energy and consequent enhancement in the visible-light absorption, whereas photoluminescence spectroscopy confirmed the reduction of the recombination of photo-excited electron hole pairs as a result of the anchoring of NiO on g-CN. The photoelectrochemical performance of g-CN and the NiO@g-CN nanocomposite photoanodes was compared by linear sweep voltammetry (LSV), Chronoamperometry (I-t), and Electrochemical Impedance Spectroscopy (EIS). All of these results of the characterization studies account for the observed fourfold enhancement of photocurrent density of NiO@g-CN nanocomposite as photoanode in the photoelectrochemical reaction.
Collapse
Affiliation(s)
- Umair Baig
- Center of Research Excellence in Desalination & Water Treatment and Center for Environment and Water, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; (U.B.); (W.S.F.)
| | - Abuzar Khan
- Center for Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;
| | - Mohammad A. Gondal
- Department of Physics and Center for Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;
| | - Mohamed A. Dastageer
- Department of Physics and Center for Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;
| | - Wail S. Falath
- Center of Research Excellence in Desalination & Water Treatment and Center for Environment and Water, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; (U.B.); (W.S.F.)
- Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| |
Collapse
|
6
|
Sun L, Li R, Zhan W, Yuan Y, Wang X, Han X, Zhao Y. Double-shelled hollow rods assembled from nitrogen/sulfur-codoped carbon coated indium oxide nanoparticles as excellent photocatalysts. Nat Commun 2019; 10:2270. [PMID: 31118411 PMCID: PMC6531469 DOI: 10.1038/s41467-019-10302-0] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 04/29/2019] [Indexed: 12/31/2022] Open
Abstract
Excellent catalytic activity, high stability and easy recovery are three key elements for fabricating efficient photocatalysts, while developing a simple method to fabricate such photocatalysts with these three features at the same time is highly challenging. In this study, we successfully synthesized double-shelled hollow rods (DHR) assembled by nitrogen (N) and sulfur (S)-codoped carbon coated indium(III) oxide (In2O3) ultra-small nanoparticles (N,S-C/In2O3 DHR). N,S-C/In2O3 DHR exhibits remarkable photocatalytic activity, high stability and easy recovery for oxidative hydroxylation reaction of arylboronic acid substrates. The catalyst recovery and surface area were well balanced through improved light harvesting, contributed by concurrently enhancing the reflection on the outer porous shell and the diffraction in the inside double-shelled hollow structure, and increased separation rate of photogenerated carriers. Photocatalytic mechanism was investigated to identify the main reactive species in the catalytic reactions. The electron separation and transfer pathway via N,S-codoped graphite/In2O3 interface was revealed by theoretical calculations. While photoredox catalysis presents exciting avenues for molecular transformations, balancing optimal photochemical and materials properties can be challenging. Here, the authors prepare carbon-coated In2O3 nanoparticles as recoverable photocatalysts for arylboronic acid oxidative hydroxylation.
Collapse
Affiliation(s)
- Liming Sun
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Department of Chemistry, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Rong Li
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Department of Chemistry, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Wenwen Zhan
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Department of Chemistry, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Yusheng Yuan
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Department of Chemistry, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Xiaojun Wang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Department of Chemistry, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China
| | - Xiguang Han
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Department of Chemistry, School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
| |
Collapse
|
7
|
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.
Collapse
|
8
|
Ye Y, Wang Y, Li Z, Ye Y, Liu Y, Zou X, Lin S. One-pot synthesis of PtIn/3D-GNs composites with high alloying degree for electro-photo synergistic catalysis. NEW J CHEM 2019. [DOI: 10.1039/c9nj04367e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alloyed PtIn/3D-GNs composites exhibit efficient electro-photo-catalysis under irradiation, deriving from the synergy between the charge separation of In2O3 and SPR excitation of In(0).
Collapse
Affiliation(s)
- Yixiang Ye
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350007
- China
| | - Yanli Wang
- College of Physics & Energy
- Fujian Normal University
- Fuzhou 350117
- China
| | - Zhongshui Li
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350007
- China
- Fujian provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering
| | - Yanzhu Ye
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350007
- China
| | - Ying Liu
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350007
- China
| | - Xiaohuan Zou
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350007
- China
| | - Shen Lin
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou 350007
- China
- Fujian provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering
| |
Collapse
|