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Nagaura T, Ashok A, Alowasheeir A, Vasanth A, Han M, Yamauchi Y. Mesoporous Semiconductive Bi 2Se 3 Films. NANO LETTERS 2023. [PMID: 37289968 DOI: 10.1021/acs.nanolett.3c00183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Bi2Se3 is a semiconductive material possessing a bandgap of 0.3 eV, and its unique band structure has paved the way for diverse applications. Herein, we demonstrate a robust platform for synthesizing mesoporous Bi2Se3 films with uniform pore sizes via electrodeposition. Block copolymer micelles act as soft templates in the electrolyte to create a 3D porous nanoarchitecture. By controlling the length of the block copolymer, the pore size is adjusted to 9 and 17 nm precisely. The nonporous Bi2Se3 film exhibits a tunneling current in a vertical direction of 52.0 nA, but upon introducing porosity (9 nm pores), the tunneling current increases significantly to 684.6 nA, suggesting that the conductivity of Bi2Se3 films is dependent on the pore structure and surface area. The abundant porous architecture exposes a larger surface area of Bi2Se3 to the surrounding air within the same volume, thereby augmenting its metallic properties.
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Affiliation(s)
- Tomota Nagaura
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Aditya Ashok
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Azhar Alowasheeir
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Arya Vasanth
- Amrita School for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi, Kerala 682041, India
| | - Minsu Han
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Yusuke Yamauchi
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
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Liu M, Wen J, Qin Y, Li J, Tang Y, Jiao L, Wu Y, Fang Q, Zheng L, Cui X, Gu W, Zhu C, Hu L, Guo S. Metal atom doping-induced S-scheme heterojunction boosts the photoelectric response. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1521-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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Ashok A, Nguyen TK, Barton M, Leitch M, Masud MK, Park H, Truong TA, Kaneti YV, Ta HT, Li X, Liang K, Do TN, Wang CH, Nguyen NT, Yamauchi Y, Phan HP. Flexible Nanoarchitectonics for Biosensing and Physiological Monitoring Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2204946. [PMID: 36538749 DOI: 10.1002/smll.202204946] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/01/2022] [Indexed: 06/17/2023]
Abstract
Flexible and implantable electronics hold tremendous promises for advanced healthcare applications, especially for physiological neural recording and modulations. Key requirements in neural interfaces include miniature dimensions for spatial physiological mapping and low impedance for recognizing small biopotential signals. Herein, a bottom-up mesoporous formation technique and a top-down microlithography process are integrated to create flexible and low-impedance mesoporous gold (Au) electrodes for biosensing and bioimplant applications. The mesoporous architectures developed on a thin and soft polymeric substrate provide excellent mechanical flexibility and stable electrical characteristics capable of sustaining multiple bending cycles. The large surface areas formed within the mesoporous network allow for high current density transfer in standard electrolytes, highly suitable for biological sensing applications as demonstrated in glucose sensors with an excellent detection limit of 1.95 µm and high sensitivity of 6.1 mA cm-2 µM-1 , which is approximately six times higher than that of benchmarking flat/non-porous films. The low impedance of less than 1 kΩ at 1 kHz in the as-synthesized mesoporous electrodes, along with their mechanical flexibility and durability, offer peripheral nerve recording functionalities that are successfully demonstrated in vivo. These features highlight the new possibilities of our novel flexible nanoarchitectonics for neuronal recording and modulation applications.
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Affiliation(s)
- Aditya Ashok
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland, 4067, Australia
- Queensland Micro and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Tuan-Khoa Nguyen
- Queensland Micro and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Matthew Barton
- School of Nursing and Midwifery, Griffith University, Southport, Queensland, 4215, Australia
- Menzies Health Institute Queensland - Griffith University, Southport, Queensland, 4215, Australia
| | - Michael Leitch
- School of Nursing and Midwifery, Griffith University, Southport, Queensland, 4215, Australia
| | - Mostafa Kamal Masud
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland, 4067, Australia
| | - Hyeongyu Park
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland, 4067, Australia
| | - Thanh-An Truong
- Queensland Micro and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
- School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Yusuf Valentino Kaneti
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland, 4067, Australia
| | - Hang Thu Ta
- Queensland Micro and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Xiaopeng Li
- School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Kang Liang
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
- School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Thanh Nho Do
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
- Tyree Foundation Institute of Health Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Chun-Hui Wang
- School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Nam-Trung Nguyen
- Queensland Micro and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Yusuke Yamauchi
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland, 4067, Australia
- School of Chemical Engineering, The University of Queensland, St Lucia, Queensland, 4067, Australia
- JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan
| | - Hoang-Phuong Phan
- Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland, 4067, Australia
- Queensland Micro and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
- School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
- Tyree Foundation Institute of Health Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
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Nagaura T, Li J, Fernando JFS, Ashok A, Alowasheeir A, Nanjundan AK, Lee S, Golberg DV, Na J, Yamauchi Y. Expeditious Electrochemical Synthesis of Mesoporous Chalcogenide Flakes: Mesoporous Cu 2 Se as a Potential High-Rate Anode for Sodium-Ion Battery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106629. [PMID: 35905492 DOI: 10.1002/smll.202106629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Nanostructured copper selenide (Cu2 Se) attracts much interest as it shows outstanding performance as thermoelectric, photo-thermal, and optical material. The mesoporous structure is also a promising morphology to obtain better performance for electrochemical and catalytic applications, thanks to its high surface area. A simple one-step electrochemical method is proposed for mesoporous chalcogenides synthesis. The synthesized Cu2 Se material has two types of mesopores (9 and 18 nm in diameter), which are uniformly distributed inside the flakes. These materials are also implemented for sodium (Na) ion battery (NIB) anode as a proof of concept. The electrode employing the mesoporous Cu2 Se exhibits superior and more stable specific capacity as a NIB anode compared to the non-porous samples. The electrode also exhibits excellent rate tolerance at each current density, from 100 to 1000 mA g-1 . It is suggested that the mesoporous structure is advantageous for the insertion of Na ions inside the flakes. Electrochemical analysis indicates that the mesoporous electrode possesses more prominent diffusion-controlled kinetics during the sodiation-desodiation process, which contributes to the improvement of Na-ion storage performance.
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Affiliation(s)
- Tomota Nagaura
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Jinliang Li
- Siyuan Laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, Guangdong, 510632, P. R. China
| | - Joseph F S Fernando
- Centre for Materials Science and School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Str., Brisbane, QLD, 4000, Australia
| | - Aditya Ashok
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Azhar Alowasheeir
- JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Ashok Kumar Nanjundan
- School of Chemical Engineering, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Sukho Lee
- Research and Development (R&D) Division, Green Energy Institute, Mokpo, Jeollanamdo, 58656, Republic of Korea
| | - Dmitri V Golberg
- Centre for Materials Science and School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Str., Brisbane, QLD, 4000, Australia
| | - Jongbeom Na
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD, 4072, Australia
- Research and Development (R&D) Division, Green Energy Institute, Mokpo, Jeollanamdo, 58656, Republic of Korea
| | - Yusuke Yamauchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD, 4072, Australia
- JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- School of Chemical Engineering, The University of Queensland, Brisbane, QLD, 4072, Australia
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Makin F, Alam F, Buckingham MA, Lewis DJ. Synthesis of ternary copper antimony sulfide via solventless thermolysis or aerosol assisted chemical vapour deposition using metal dithiocarbamates. Sci Rep 2022; 12:5627. [PMID: 35379851 PMCID: PMC8979952 DOI: 10.1038/s41598-022-08822-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 03/07/2022] [Indexed: 12/30/2022] Open
Abstract
Copper antimony sulfide (Cu-Sb-S) has recently been proposed as an attractive alternative photovoltaic material due to the earth-abundant and non-toxic nature of the elements, high absorption coefficients and band gaps commensurate with efficient harvesting of solar photonic flux across multiple phases of Cu-Sb-S. These materials are therefore highly desirable and sustainable and scalable deposition techniques to produce them are of interest. In this paper, we demonstrate two facile, low-temperature and inexpensive techniques (solventless thermolysis and aerosol-assisted chemical vapor deposition (AACVD)) for the preparation of binary digenite (Cu1.8S), chalcocite (Cu2S) and stibnite (Sb2S3) and several phases of ternary copper-antimony-sulfide (Cu2xSb2(1-x)Sy, where 0 ≤ x ≤ 1). It was found that by utilising these different techniques and varying the ratio of Cu:Sb, pure phases of ternary chalcostibite (CuSbS2), fematinite (Cu3SbS4) and tetrahedrite (Cu12Sb4S13) can be achieved. Two single-source precursors were investigated for this purpose, namely the diethyldithiocarbamate (DTC) complexes of copper and antimony Cu(DTC)2 and Sb(DTC)3. These were decomposed both individually (to produce binary materials) and combined (to produce ternary materials) at different ratios. From the solventless thermolysis and AACVD methods, either particulate or thin film material was formed, respectively. These materials were then characterised by powder XRD, SEM, EDX and Raman spectroscopies to determine the crystalline phase, material morphology and uniformity of elemental composition. This analysis demonstrated that as the Cu-content increases, the phase of the ternary material changes from chalcostibite (CuSbS2) and fematinite (Cu3SbS4) at a low Cu:Sb ratio to tetrahedrite (Cu12Sb4S13) at a high Cu:Sb ratio.
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Affiliation(s)
- Fadiyah Makin
- Department of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
- Department of Physics, College of Science, Jazan University, Jazan, 82817, Saudi Arabia
| | - Firoz Alam
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Mark A Buckingham
- Department of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - David J Lewis
- Department of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
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Ashok A, Vasanth A, Nagaura T, Eguchi M, Motta N, Phan H, Nguyen N, Shapter JG, Na J, Yamauchi Y. Plasma-Induced Nanocrystalline Domain Engineering and Surface Passivation in Mesoporous Chalcogenide Semiconductor Thin Films. Angew Chem Int Ed Engl 2022; 61:e202114729. [PMID: 35080101 PMCID: PMC9305943 DOI: 10.1002/anie.202114729] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Indexed: 11/17/2022]
Abstract
The synthesis of highly crystalline mesoporous materials is key to realizing high-performance chemical and biological sensors and optoelectronics. However, minimizing surface oxidation and enhancing the domain size without affecting the porous nanoarchitecture are daunting challenges. Herein, we report a hybrid technique that combines bottom-up electrochemical growth with top-down plasma treatment to produce mesoporous semiconductors with large crystalline domain sizes and excellent surface passivation. By passivating unsaturated bonds without incorporating any chemical or physical layers, these films show better stability and enhancement in the optoelectronic properties of mesoporous copper telluride (CuTe) with different pore diameters. These results provide exciting opportunities for the development of long-term, stable, and high-performance mesoporous semiconductor materials for future technologies.
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Affiliation(s)
- Aditya Ashok
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQueensland4072Australia
- Queensland Micro- and Nanotechnology CentreGriffith UniversityNathanQueensland4111Australia
| | - Arya Vasanth
- Amrita Center for Nanosciences and Molecular MedicineAmrita Vishwa VidyapeethamKochiKerala682041India
| | - Tomota Nagaura
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQueensland4072Australia
| | - Miharu Eguchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQueensland4072Australia
- JST-ERATO Yamauchi Material Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA)National Institute for Materials Science1-1 Namiki, TsukubaIbaraki305-0044Japan
| | - Nunzio Motta
- School of Chemistry and PhysicsQueensland University of Technology (QUT)2 George StreetBrisbaneQueensland4001Australia
| | - Hoang‐Phuong Phan
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQueensland4072Australia
- Queensland Micro- and Nanotechnology CentreGriffith UniversityNathanQueensland4111Australia
| | - Nam‐Trung Nguyen
- Queensland Micro- and Nanotechnology CentreGriffith UniversityNathanQueensland4111Australia
| | - Joseph G. Shapter
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQueensland4072Australia
| | - Jongbeom Na
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQueensland4072Australia
- Research and Development (R&D) DivisionGreen Energy InstituteMokpoJeollanamdo58656Republic of Korea
| | - Yusuke Yamauchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN)The University of QueenslandBrisbaneQueensland4072Australia
- JST-ERATO Yamauchi Material Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA)National Institute for Materials Science1-1 Namiki, TsukubaIbaraki305-0044Japan
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Ashok A, Vasanth A, Nagaura T, Eguchi M, Motta N, Phan H, Nguyen N, Shapter JG, Na J, Yamauchi Y. Plasma‐Induced Nanocrystalline Domain Engineering and Surface Passivation in Mesoporous Chalcogenide Semiconductor Thin Films. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aditya Ashok
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Queensland 4072 Australia
- Queensland Micro- and Nanotechnology Centre Griffith University Nathan Queensland 4111 Australia
| | - Arya Vasanth
- Amrita Center for Nanosciences and Molecular Medicine Amrita Vishwa Vidyapeetham Kochi Kerala 682041 India
| | - Tomota Nagaura
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Queensland 4072 Australia
| | - Miharu Eguchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Queensland 4072 Australia
- JST-ERATO Yamauchi Material Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA) National Institute for Materials Science 1-1 Namiki, Tsukuba Ibaraki 305-0044 Japan
| | - Nunzio Motta
- School of Chemistry and Physics Queensland University of Technology (QUT) 2 George Street Brisbane Queensland 4001 Australia
| | - Hoang‐Phuong Phan
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Queensland 4072 Australia
- Queensland Micro- and Nanotechnology Centre Griffith University Nathan Queensland 4111 Australia
| | - Nam‐Trung Nguyen
- Queensland Micro- and Nanotechnology Centre Griffith University Nathan Queensland 4111 Australia
| | - Joseph G. Shapter
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Queensland 4072 Australia
| | - Jongbeom Na
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Queensland 4072 Australia
- Research and Development (R&D) Division Green Energy Institute Mokpo Jeollanamdo 58656 Republic of Korea
| | - Yusuke Yamauchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Queensland 4072 Australia
- JST-ERATO Yamauchi Material Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA) National Institute for Materials Science 1-1 Namiki, Tsukuba Ibaraki 305-0044 Japan
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Structural and Optical Characterizations of Cadmium Chalcogenide Layers on Polyamide Formed Using Monotelluropentathionic Acid. MATERIALS 2022; 15:ma15030787. [PMID: 35160733 PMCID: PMC8836557 DOI: 10.3390/ma15030787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/12/2022] [Accepted: 01/18/2022] [Indexed: 12/04/2022]
Abstract
Mixed cadmium tellurides–cadmium sulfide thin layers were formed on the polyamide PA 6. Monotelluropentathionic acid (H2TeS4O6) was used as a precursor of tellurium and sulfur. A low-temperature, nontoxic, and cost-effective SILAR method was applied. Cadmium telluride (CdTe) and sulfide (CdS) layers were formed through the consecutive reactions of sorbed/diffused chalcogens species from telluropentathionate anion (TeS4O62−) with functional groups of polyamide and alkaline cadmium sulfate. The pseudo-second-order rate and Elovich kinetic models were the best fit to quantify an uptake of chalcogens and cadmium on PA 6. The effects of chalcogens and Cd on the structure and optical properties of PA 6 were characterized using UV-Vis and IR spectra. The clear changes of these properties depended on the concentration and exposure time in the precursor solutions. Fourier transform infrared spectroscopy and ultraviolet-visible spectroscopy were applied in order to evaluate the effect of the chalcogen species on the changes in structure of polyamide 6 films, depending on the exposure time in the solution of the chalcogens precursor and its concentration. The optical bandgap energy of the formed layers was found to be in the order of 1.52–2.36 eV. Studies by scanning electron microscopy and atomic force microscopy reveal that the diameter of the average grain is approximately 30 nm. The grains are conical in shape and unevenly distributed all over the surface of the substrate.
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