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  1. AU="Mohamad, Imran Syakir"
  2. AU="Ștefănescu, Roxana"
  3. AU="De Jong, Ymke"
  4. AU="Balajthy, J"
  5. AU="David B. Volkin"
  6. AU="Hancock, Brandon"
  7. AU="Gatesy, Samuel W M"
  8. AU="Chénard, Caroline"
  9. AU="Krishna Chinthapalli"
  10. AU="Eneyda Secada Cárdenas"
  11. AU="Talbot, Nick"
  12. AU="Perez-Shibayama, Christian"
  13. AU="Melissa M. Mills"
  14. AU="Goli, Haneesha"
  15. AU="Viviana Falcón-Cama"
  16. AU="Januschek, Friederike"
  17. AU="Bonilla-Aldana, D. Katterine"
  18. AU="Stix, Michael S"
  19. AU="Xiao, Bing"
  20. AU="Algattas, Hanna N"
  21. AU="Ihm, M"
  22. AU="Nivelo, Luis A"
  23. AU="Nirja Kaka"
  24. AU="Bahnă, Adriana Florina"
  25. AU="Wen, Changchun"
  26. AU="Nizami, Sarea Islam Nuha"
  27. AU="Douglas J Kelly"
  28. AU=Kingston Elizabeth V
  29. AU="Jyoti Nepal"
  30. AU="González, Ana M Martín"

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  1. Artikel ; Online: Correction: Carbon nanotubes: functionalisation and their application in chemical sensors.

    Norizan, Mohd Nurazzi / Moklis, Muhammad Harussani / Ngah Demon, Siti Zulaikha / Halim, Norhana Abdul / Samsuri, Alinda / Mohamad, Imran Syakir / Knight, Victor Feizal / Abdullah, Norli

    RSC advances

    2024  Band 14, Heft 14, Seite(n) 9570

    Abstract: This corrects the article DOI: 10.1039/D0RA09438B.]. ...

    Abstract [This corrects the article DOI: 10.1039/D0RA09438B.].
    Sprache Englisch
    Erscheinungsdatum 2024-03-21
    Erscheinungsland England
    Dokumenttyp Published Erratum
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d4ra90025a
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel: Heterojunctions of rGO/Metal Oxide Nanocomposites as Promising Gas-Sensing Materials-A Review.

    Norizan, Mohd Nurazzi / Abdullah, Norli / Halim, Norhana Abdul / Demon, Siti Zulaikha Ngah / Mohamad, Imran Syakir

    Nanomaterials (Basel, Switzerland)

    2022  Band 12, Heft 13

    Abstract: Monitoring environmental hazards and pollution control is vital for the detection of harmful toxic gases from industrial activities and natural processes in the environment, such as nitrogen dioxide ( ... ...

    Abstract Monitoring environmental hazards and pollution control is vital for the detection of harmful toxic gases from industrial activities and natural processes in the environment, such as nitrogen dioxide (NO
    Sprache Englisch
    Erscheinungsdatum 2022-07-01
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article ; Review
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano12132278
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel: Characterizations of MWCNTs Nanofluids on the Effect of Surface Oxidative Treatments.

    Mohd Saidi, Norshafiqah / Norizan, Mohd Nurazzi / Abdullah, Norli / Janudin, Nurjahirah / Kasim, Noor Azilah Mohd / Osman, Mohd Junaedy / Mohamad, Imran Syakir

    Nanomaterials (Basel, Switzerland)

    2022  Band 12, Heft 7

    Abstract: In this study, multi-walled carbon nanotubes (MWCNTs) were chemically modified using three acid treatment methods to introduce the surface oxygen functional group (SOFG). The presence of SOFG on the MWCNTs has been characterized by Fourier Transform ... ...

    Abstract In this study, multi-walled carbon nanotubes (MWCNTs) were chemically modified using three acid treatment methods to introduce the surface oxygen functional group (SOFG). The presence of SOFG on the MWCNTs has been characterized by Fourier Transform Infrared (FTIR) spectroscopy. Morphology, structural and thermal properties were performed using Field Emission Scanning Electron Microscopy (FESEM), Raman spectroscopy, and Thermogravimetric analysis (TGA), respectively. The result shows that the modification with acid treatment significantly affects the degree of defects and surface group functionality of surface oxidized MWCNTs from method B. The preparation of nanofluids using MWCNTs produced from method B (MWCNT-MB) was prepared using two different parameters: with and without polyvinylpyrrolidone (PVP) as surfactant. The experiment was conducted by setting variable carbon particle concentration from 0.1 wt.% to 1.0 wt.%, and the amount of PVP is 10% of carbon particles at different temperatures (6 °C, 25 °C, 40 °C). Based on visual observation, the dispersion of carbon particles was enhanced by the presence of PVP as the stabilizing agent. The thermal conductivity performance of nanofluids revealed that the surface oxidized MWCNTs with PVP show enhanced thermal conductivity compared to the nanofluid containing MWCNTs without PVP. The improvement contributes to this in terms of stability and homogenization of nanoparticles. Hence the improved distribution of MWCNTs in water-based media improves thermal conductivity. These promising properties of MWCNTs in water-based fluids would enable the nanofluids to be used in heat transfer fluid and cooling applications.
    Sprache Englisch
    Erscheinungsdatum 2022-03-24
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano12071071
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel: Surface-Oxidised Carbon Nanofibre-Based Nanofluids: Structural, Morphological, Stability and Thermal Properties.

    Mohd Saidi, Norshafiqah / Abdullah, Norli / Norizan, Mohd Nurazzi / Janudin, Nurjahirah / Mohd Kasim, Noor Azilah / Osman, Mohd Junaedy / Mohamad, Imran Syakir / Mohd Rosli, Mohd Afzanizam

    Nanomaterials (Basel, Switzerland)

    2022  Band 12, Heft 21

    Abstract: The reputation of nanofluids as a convenient heat transfer media has grown in recent years. The synthesis of nanofluids is often challenging, particularly carbon-based nanofluids, due to the rapid agglomeration of the nanoparticles and the instability of ...

    Abstract The reputation of nanofluids as a convenient heat transfer media has grown in recent years. The synthesis of nanofluids is often challenging, particularly carbon-based nanofluids, due to the rapid agglomeration of the nanoparticles and the instability of the nanofluids. In this regard, surface modification and surfactant addition are potential approaches to improve the physical and thermal properties of carbon-based nanofluids that have been studied and the structural, morphological, and thermal characteristics of surface-oxidised carbon nanofibre (CNF)-based nanofluids has been characterised. Commercial CNF was first subjected to three different acid treatments to introduce surface oxygen functional groups on the CNF surface. Following the physical and thermal characterisation of the three surface-oxidised CNFs (CNF-MA, CNF-MB, and CNF-MC), including Raman spectroscopy, Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), and field emission scanning electron microscopy (FESEM), the CNF-MB was selected as the best method to synthesise the surface-oxidised CNF-based nanofluid. A total of 40 mL of ultrapure water was used as a pure base fluid and mixed with the surface-oxidised CNF at a concentration range of 0.1-1.0 wt.%, with a fixed of 10 wt.% amount of polyvinylpyrrolidone (PVP). The thermal conductivity of CNF-based nanofluid was then characterised at different temperatures (6, 25, and 40 °C). Based on the results, surface oxidation via Method B significantly affected the extent of surface defects and effectively enhanced the group functionality on the CNF surface. Aside from the partially defective and rough surface of CNF-MB surfaces from the FESEM analysis, the presence of surface oxygen functional groups on the CNF wall was confirmed via the Raman analysis, TGA curve, and FTIR analysis. The visual sedimentation observation also showed that the surface-oxidised CNF particles remained dispersed in the nanofluid due to the weakened van der Waals interaction. The dispersion of CNF particles was improved by the presence of PVP, which further stabilised the CNF-based nanofluids. Ultimately, the thermal conductivity of the surface-oxidised CNF-based nanofluid with PVP was significantly improved with the highest enhancement percentage of 18.50, 16.84, and 19.83% at 6, 25, and 40 °C, respectively, at an optimum CNF concentration of 0.7 wt.%.
    Sprache Englisch
    Erscheinungsdatum 2022-11-07
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano12213922
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Carbon nanotubes: functionalisation and their application in chemical sensors.

    Norizan, Mohd Nurazzi / Moklis, Muhammad Harussani / Ngah Demon, Siti Zulaikha / Halim, Norhana Abdul / Samsuri, Alinda / Mohamad, Imran Syakir / Knight, Victor Feizal / Abdullah, Norli

    RSC advances

    2020  Band 10, Heft 71, Seite(n) 43704–43732

    Abstract: Carbon nanotubes (CNTs) have been recognised as a promising material in a wide range of applications, from safety to energy-related devices. However, poor solubility in aqueous and organic solvents has hindered the utilisation and applications of carbon ... ...

    Abstract Carbon nanotubes (CNTs) have been recognised as a promising material in a wide range of applications, from safety to energy-related devices. However, poor solubility in aqueous and organic solvents has hindered the utilisation and applications of carbon nanotubes. As studies progressed, the methodology for CNTs dispersion was established. The current state of research in CNTs either single wall or multiwall/polymer nanocomposites has been reviewed in context with the various types of functionalisation presently employed. Functionalised CNTs have been playing an increasingly central role in the research, development, and application of carbon nanotube-based nanomaterials and systems. The extremely high surface-to-volume ratio, geometry, and hollow structure of nanomaterials are ideal for the adsorption of gas molecules. This offers great potential applications, such as in gas sensor devices working at room temperature. Particularly, the advent of CNTs has fuelled the invention of CNT-based gas sensors which are very sensitive to the surrounding environment. The presence of O
    Sprache Englisch
    Erscheinungsdatum 2020-12-09
    Erscheinungsland England
    Dokumenttyp Journal Article ; Review
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d0ra09438b
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel: Carbon nanotubes: functionalisation and their application in chemical sensors

    Norizan, Mohd Nurazzi / Moklis, Muhammad Harussani / Ngah Demon, Siti Zulaikha / Halim, Norhana Abdul / Samsuri, Alinda / Mohamad, Imran Syakir / Knight, Victor Feizal / Abdullah, Norli

    RSC advances. 2020 Dec. 09, v. 10, no. 71

    2020  

    Abstract: Carbon nanotubes (CNTs) have been recognised as a promising material in a wide range of applications, from safety to energy-related devices. However, poor solubility in aqueous and organic solvents has hindered the utilisation and applications of carbon ... ...

    Abstract Carbon nanotubes (CNTs) have been recognised as a promising material in a wide range of applications, from safety to energy-related devices. However, poor solubility in aqueous and organic solvents has hindered the utilisation and applications of carbon nanotubes. As studies progressed, the methodology for CNTs dispersion was established. The current state of research in CNTs either single wall or multiwall/polymer nanocomposites has been reviewed in context with the various types of functionalisation presently employed. Functionalised CNTs have been playing an increasingly central role in the research, development, and application of carbon nanotube-based nanomaterials and systems. The extremely high surface-to-volume ratio, geometry, and hollow structure of nanomaterials are ideal for the adsorption of gas molecules. This offers great potential applications, such as in gas sensor devices working at room temperature. Particularly, the advent of CNTs has fuelled the invention of CNT-based gas sensors which are very sensitive to the surrounding environment. The presence of O₂, NH₃, NO₂ gases and many other chemicals and molecules can either donate or accept electrons, resulting in an alteration of the overall conductivity. Such properties make CNTs ideal for nano-scale gas-sensing materials. Conductive-based devices have already been demonstrated as gas sensors. However, CNTs still have certain limitations for gas sensor application, such as a long recovery time, limited gas detection, and weakness to humidity and other gases. Therefore, the nanocomposites of interest consisting of polymer and CNTs have received a great deal of attention for gas-sensing application due to higher sensitivity over a wide range of gas concentrations at room temperature compared to only using CNTs and the polymer of interest separately.
    Schlagwörter adsorption ; ambient temperature ; carbon nanotubes ; detection ; electrons ; gases ; geometry ; humidity ; polymer nanocomposites ; polymers ; research ; solubility ; solvents
    Sprache Englisch
    Erscheinungsverlauf 2020-1209
    Umfang p. 43704-43732.
    Erscheinungsort The Royal Society of Chemistry
    Dokumenttyp Artikel
    Anmerkung NAL-light
    ISSN 2046-2069
    DOI 10.1039/d0ra09438b
    Datenquelle NAL Katalog (AGRICOLA)

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