1
|
Zhang Y, Feng W, Zhang J, Lu D, Zeng W, Zhou Q. Enhancement of Adsorption Performance of Gases in Oil on a Cr 3-Modified SnS 2 Monolayer Based on the First Principles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14422-14432. [PMID: 37769301 DOI: 10.1021/acs.langmuir.3c01879] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
Dissolved gas analysis (DGA) is the most commonly used transformer fault diagnosis technology at present. In this paper, according to the method of first principles of density function theory (DFT), the gas-sensitive mechanisms of four oil-soluble characteristic gases (H2, CO, C2H2, C2H4) on intrinsic SnS2 and Cr3-SnS2 were studied. The adsorption energy and electron transfer were calculated, and the density of states, energy bands, and recovery times were analyzed. It was concluded that H2 and C2H4 were physisorbed on the Cr3-SnS2 monolayer, while CO and C2H2 were chemisorbed. It is believed that the Cr3-SnS2 material can be used in gas sensing for CO and C2H2. Cr3-SnS2 is expected to serve as a gas detector for the detection of CO with both a good response and reusability. Therefore, Cr3-SnS2 has very promising applications in the evaluation of the operation of oil-immersed transformers. This study will provide some help and inspiration for the development of the Cr3-SnS2 monolayer in gas-sensitive materials.
Collapse
Affiliation(s)
- Yu Zhang
- College of Engineering and Technology, Southwest University, Chongqing 400715, China
| | - Weiquan Feng
- College of Engineering and Technology, Southwest University, Chongqing 400715, China
| | - Jiaqi Zhang
- College of Engineering and Technology, Southwest University, Chongqing 400715, China
| | - Detao Lu
- College of Engineering and Technology, Southwest University, Chongqing 400715, China
| | - Wen Zeng
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Qu Zhou
- College of Engineering and Technology, Southwest University, Chongqing 400715, China
| |
Collapse
|
2
|
Partial Discharge Elimination in Transformer Oils by Nanofluids: From Theory to Practice. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-07315-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
3
|
Gui Y, Liu Z, Ji C, Xu L, Chen X. Adsorption behavior of metal oxides (CuO, NiO, Ag2O) modified GeSe monolayer towards dissolved gases (CO, CH4, C2H2, C2H4) in transformer oil. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.05.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
4
|
Lang Z, Qiao S, He Y, Ma Y. Quartz tuning fork-based demodulation of an acoustic signal induced by photo-thermo-elastic energy conversion. PHOTOACOUSTICS 2021; 22:100272. [PMID: 34040982 PMCID: PMC8144470 DOI: 10.1016/j.pacs.2021.100272] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/22/2021] [Accepted: 05/10/2021] [Indexed: 05/06/2023]
Abstract
A gas sensing method based on quartz-enhanced photothermal spectroscopy (QEPTS) demodulated by quartz tuning fork (QTF) sensing acoustic wave is reported for the first time. Different from traditional QEPTS, the method proposed in this paper utilizes the second QTF to sense acoustic wave produced by the first QTF owing to the vibration resulted from photo-thermo-elastic effect. This indirect demodulation by acoustic wave sensing can avoid QTF being irradiated by laser beam and therefore get less noise and realize better detection sensitivity. Four different sensing configurations are designed and verified. Acetylene (C2H2) with a volume concentration of 1.95 % is selected as the target gas. A model of sound field produced by the first QTF vibrating is established by finite element method to explain the variation trend of signal and noise in the second QTF. The measured results indicate that this technique had an enhanced signal-to-noise ratio (SNR) of 1.36 times when compared to the traditional QEPTS. Further improvement methods for such technique is proposed.
Collapse
|
5
|
Liao Y, Peng R, Peng S, Zeng W, Zhou Q. The Adsorption of H 2 and C 2H 2 on Ge-Doped and Cr-Doped Graphene Structures: A DFT Study. NANOMATERIALS 2021; 11:nano11010231. [PMID: 33467187 PMCID: PMC7830370 DOI: 10.3390/nano11010231] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 11/16/2022]
Abstract
In order to find an excellent sensing material for dissolved gases in transformer oil, the adsorption structures of intrinsic graphene (IG), Ge-doped graphene (GeG), and Cr-doped graphene (CrG) to H2 and C2H2 gas molecules were built. It was found that the doping site right above C atom (T) was the most stable structure by studying three potential doping positions of the Ge and Cr atom on the graphene surface. Then, the structural parameters, density of states, and difference state density of these adsorption systems were calculated and analyzed based on the density functional calculations. The results show that the adsorption properties of GeG and CrG systems for H2 and C2H2 are obviously better than the IG system. Furthermore, by comparing the two doping systems, CrG system exhibits more outstanding adsorption performances to H2 and C2H2, especially for C2H2 gas. Finally, the highest adsorption energy (-1.436 eV) and the shortest adsorption distance (1.981 Å) indicate that Cr-doped graphene is promising in the field of C2H2 gas-sensing detection.
Collapse
Affiliation(s)
- Yiming Liao
- College of Engineering and Technology, Southwest University, Chongqing 400715, China; (Y.L.); (R.P.)
| | - Ruochen Peng
- College of Engineering and Technology, Southwest University, Chongqing 400715, China; (Y.L.); (R.P.)
| | - Shudi Peng
- Chongqing Electric Power Research Institute, State Grid Chongqing Electric Power Company, Chongqing 401123, China;
| | - Wen Zeng
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
- Correspondence: (W.Z.); (Q.Z.); Tel.: +86-130-683-05845 (Q.Z.)
| | - Qu Zhou
- College of Engineering and Technology, Southwest University, Chongqing 400715, China; (Y.L.); (R.P.)
- Correspondence: (W.Z.); (Q.Z.); Tel.: +86-130-683-05845 (Q.Z.)
| |
Collapse
|
6
|
Pt Cluster Modified h-BN for Gas Sensing and Adsorption of Dissolved Gases in Transformer Oil: A Density Functional Theory Study. NANOMATERIALS 2019; 9:nano9121746. [PMID: 31817995 PMCID: PMC6955762 DOI: 10.3390/nano9121746] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/25/2019] [Accepted: 12/06/2019] [Indexed: 11/16/2022]
Abstract
Hexagonal-Boron nitride nanotubes (h-BN) decorated with transition metals have been widely studied due to their enhanced physicochemical properties. In this paper, Pt cluster-modified h-BN is proposed as a sensitive material for a novel gas sensor for the online malfunction monitoring of oil-immersed transformers. The inner oil is ultimately decomposed to various gases during the long-term use of oil-immersed transformers. Exposure to excessively high temperatures produces the alkanes CH4 and C2H6, whereas different degrees of discharge generate H2 and C2H2. Therefore, the identification of H2, CH4, and C2H2 gas efficiently measures the quality of transformers. Based on the density functional theory, the most stable h-BN doped with 1-4 Pt atoms is employed to simulate its adsorption performance and response behavior to these typical gases. The adsorption energy, charge transfer, total density of states, projected density of states, and orbital theory of these adsorption systems are analyzed and the results show high consistency. The adsorption ability for these decomposition components are ordered as follows: C2H2 > H2 > CH4. Pt cluster-modified h-BN shows good sensitivity to C2H2, H2, with decreasing conductivity in each system, but is insensitive to CH4 due to its weak physical sorption. The conductivity change of Ptn-h-BN is considerably larger upon H2 than that upon C2H2, but is negligible upon CH4. Our calculations suggest that Pt cluster modified h-BN can be employed in transformers to estimate their operation status.
Collapse
|
7
|
Khorrampour R, Raissi H. Molecular insight into adsorption affinities of Carmustine drug on boron and nitrogen doped functionalized single-walled carbon nanotubes using density functional theory including dispersion correction calculations and molecular dynamics simulation. J Biomol Struct Dyn 2019; 38:4817-4826. [DOI: 10.1080/07391102.2019.1692071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Heidar Raissi
- Chemistry Department, University of Birjand, Birjand, Iran
| |
Collapse
|
8
|
Reinoso C, Berkmann C, Shi L, Debut A, Yanagi K, Pichler T, Ayala P. Toward a Predominant Substitutional Bonding Environment in B-Doped Single-Walled Carbon Nanotubes. ACS OMEGA 2019; 4:1941-1946. [PMID: 31459446 PMCID: PMC6648486 DOI: 10.1021/acsomega.8b03031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/11/2019] [Indexed: 06/10/2023]
Abstract
B-doped single-walled carbon nanotubes have been synthesized from sodium tetraphenyl borate and record incorporation percentages of B heteroatoms have been found in this material as-synthesized. However, carbonaceous impurities, besides other byproducts, can still contain boron and therefore exhibit various types of competing bonding environments. To circumvent this issue, which has constantly hindered a conclusive insight to the existing bonding environments in materials alike, we have employed a purification method, which leaves ∼7% at. of B atoms of the total sample composition almost exclusively in the sp2 configuration. This record B substitutional doping, together with the identification of the competing bonding environments are revealed here unambiguously from X-ray photoelectron spectroscopy. The doping level in the purified tubes is about an order of magnitude larger than in other B-doped single-walled tubes even without purification, and brings the state-of-the-art closer to the controlled applicability of this material.
Collapse
Affiliation(s)
- Carlos Reinoso
- Faculty
of Physics. University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Claudia Berkmann
- Faculty
of Physics. University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Lei Shi
- Faculty
of Physics. University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
- School
of Materials Science & Engineering, Sun Yat-sen University, 510275 Guangzhou, Guangdong, P. R. China
| | - Alexis Debut
- Centro
de Nanociencia y Nanotecnología, Universidad de las Fuerzas Armadas--ESPE, P.O. Box 171102, Sangolqui, Ecuador
| | - Kazuhiro Yanagi
- Department
of Physics, Tokyo Metropolitan University, Hachioji, 192-0397 Tokyo, Japan
| | - Thomas Pichler
- Faculty
of Physics. University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
| | - Paola Ayala
- Faculty
of Physics. University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria
| |
Collapse
|
9
|
Abdel Fattah AR, Majdi T, Abdalla AM, Ghosh S, Puri IK. Nickel Nanoparticles Entangled in Carbon Nanotubes: Novel Ink for Nanotube Printing. ACS APPLIED MATERIALS & INTERFACES 2016; 8:1589-1593. [PMID: 26735184 DOI: 10.1021/acsami.5b11700] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report the serendipitous discovery of a rapid and inexpensive method to attach nanoscale magnetic chaperones to carbon nanotubes (CNTs). Nickel nanoparticles (NiNPs) become entangled in CNTs after both are dispersed in kerosene by sonication and form conjugates. An externally applied magnetic field manipulates the resulting CNTs-NiNP ink without NiNP separation, allowing us to print an embedded circuit in an elastomeric matrix and fabricate a strain gage and an oil sensor. The new method to print a circuit in a soft material using an NiNP-CNT ink is more rapid and inexpensive than the complex physical and chemical means typically used to magnetize CNTs.
Collapse
Affiliation(s)
- Abdel Rahman Abdel Fattah
- Department of Mechanical Engineering and ‡Department of Engineering Physics McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Tahereh Majdi
- Department of Mechanical Engineering and ‡Department of Engineering Physics McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Ahmed M Abdalla
- Department of Mechanical Engineering and ‡Department of Engineering Physics McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Suvojit Ghosh
- Department of Mechanical Engineering and ‡Department of Engineering Physics McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Ishwar K Puri
- Department of Mechanical Engineering and ‡Department of Engineering Physics McMaster University , 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| |
Collapse
|