Tan Soo Jin
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Preferred name
Tan Soo Jin
Official Name
Tan, Soo Jin
Alternative Name
Jin, T. S.
Tan, S. J.
Soo-Jin, Tan
Tan, J. S.
Jin, Tan Soo
Main Affiliation
Scopus Author ID
55432801200
Researcher ID
ABG-5365-2021

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Now showing 1 - 4 of 4
  • Publication
    Properties of polyaniline/graphene oxide (PANI/GO) composites: effect of GO loading
    ( 2021-09-01)
    Mutalib T.N.A.B.T.A.
    ;
    Tan Soo Jin
    ;
    Foo Kai Loong
    ;
    Liew Yun Ming
    ;
    Heah Cheng Yong
    ;
    Mohd. Mustafa Al Bakri Abdullah
    Polyaniline/graphene oxide (PANI/GO) composites at different wt% of GO were prepared via solution method. PANI was mixed with the GO synthesized from the improved Hummer’s method. The formation of GO was confirmed via Raman and C/O ratio. Based on the FT-IR, XRD and SEM results, it confirmed the presence of both PANI and GO characteristics at 10.9°, 25.8° and 27.8° and interactions between PANI and GO particles in PANI/GO composites at different GO loading. SEM micrographs showed a folding and wrinkled surface of GO due to the defect upon oxidation process. This means that the weak π–π interactions or the agglomeration of GO have caused PANI unable to attach on the large conjugated basal planes of GO sheets. The defective domains made GO as an insulator as it contained distortions and oxygen-containing functional groups and their local decoration. Low-conductivity domain had conquered most of the GO region which later reduced the pathway of the current flow; therefore, conductivity is affected. The wrinkled structure also resulted in the low conductivity as it weakens the interfacial interaction between PANI and GO and thus disrupted the electron movement in the composites. Due to this, the electrical conductivity reached up to 1.83 × 10−10 S/cm as the GO loading increased to 50 wt%.
      2
  • Publication
    Evaluation of the effect of silica fume on amorphous fly ash geopolymers exposed to elevated temperature
    ( 2021-01-01)
    Li O.H.
    ;
    Liew Yun Ming
    ;
    Heah Cheng Yong
    ;
    Bayuaji R.
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Foo Kai Loong
    ;
    Tan Soo Jin
    ;
    Teng N.H.
    ;
    Nabiałek M.
    ;
    Jeż B.
    ;
    Sing N.Y.
    The properties of amorphous geopolymer with silica fume addition after heat treatment was rarely reported in the geopolymer field. Geopolymer was prepared by mixing fly ash and alkali activator. The silica fume was added in 2% and 4% by weight. The geopolymer samples were cured at room temperature for 28 days before exposed to an elevated temperature up to 1000â—¦C. The incorporation of 2% silica fume did not cause significant improvement in the compressive strength of unexposed geopolymer. Higher silica fume content of 4% reduced the compressive strength of the unexposed geopolymer. When subjected to elevated temperature, geopolymer with 2% silica fume retained higher compressive strength at 1000â—¦C. The addition of silica fume in fly ash geopolymer caused a lower degree of shrinkage and expansion, as compared to geopolymer without the addition of silica fume. Crystalline phases of albite and magnetite were formed in the geopolymer at 1000â—¦C.
      2  27
  • Publication
    Evaluation of the effect of silica fume on amorphous fly ash geopolymers exposed to elevated temperature
    ( 2021)
    Ong Huey Li
    ;
    Liew Yun Ming
    ;
    Heah Cheng Yong
    ;
    Ridho Bayuaji
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Foo Kai Loong
    ;
    Tan Soo Jin
    ;
    Ng Hui Teng
    ;
    Marcin Nabiałek
    ;
    Bartlomiej Jeż
    ;
    Ng Yong Sing
    The properties of amorphous geopolymer with silica fume addition after heat treatment was rarely reported in the geopolymer field. Geopolymer was prepared by mixing fly ash and alkali activator. The silica fume was added in 2% and 4% by weight. The geopolymer samples were cured at room temperature for 28 days before exposed to an elevated temperature up to 1000 °C. The incorporation of 2% silica fume did not cause significant improvement in the compressive strength of unexposed geopolymer. Higher silica fume content of 4% reduced the compressive strength of the unexposed geopolymer. When subjected to elevated temperature, geopolymer with 2% silica fume retained higher compressive strength at 1000 °C. The addition of silica fume in fly ash geopolymer caused a lower degree of shrinkage and expansion, as compared to geopolymer without the addition of silica fume. Crystalline phases of albite and magnetite were formed in the geopolymer at 1000 °C.
      1  20
  • Publication
    Acid-resistance of one-part geopolymers: Sodium aluminate and carbonate as alternative activators to conventional sodium metasilicate and hydroxide
    ( 2023-11-10)
    Wan-En O.
    ;
    Liew Yun Ming
    ;
    Heah Cheng Yong
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Ho Li Ngee
    ;
    Pakawanit P.
    ;
    Wei Ken P.
    ;
    Khalid M.S.
    ;
    Md Razi H.
    ;
    Lee W.H.
    ;
    Tan Soo Jin
    ;
    Shee-Ween O.
    ;
    Yong-Jie H.
    In this study, the durability of one-part geopolymers (OPGs) made from high calcium fly ash is assessed by investigating their resistance to acid attacks. The predominant use of less environmentally sustainable sodium metasilicate (Na2SiO3) and sodium hydroxide (NaOH) in OPG, along with the limited understanding about the influence of solid alkali activators on OPG's acid resistance propelled the investigation and comparison of acid resistance of OPGs activated using both conventional activators and potential alternatives like sodium aluminate (NaAlO2) and sodium carbonate (Na2CO3). The OPGs developed were exposed to sulphuric acid (H2SO4) solution for 28 days. The MH sample (activated with Na2SiO3 and NaOH) was vulnerable to acid attack, with a 66% compressive strength drop after 5% H2SO4 solution exposure, due to high sorptivity. In contrast, the MA sample (activated with Na2SiO3 and NaAlO2) demonstrated excellent acid resistance, with only a 32% strength reduction, attributed to its Al-rich hydrated gel. The MC sample (activated with Na2SiO3 and Na2CO3) exhibited a 41% strength reduction, where the formation of calcite reduced extensive ion exchange, gradually mitigated deterioration. The residual compressive strength of MA and MC samples increased by 7% and 9% from 7 to 28 days of immersion in 5% H2SO4 solution, respectively. The NaAlO2 and Na2CO3 are potential activators for OPG, serving as alternative construction materials to OPC and traditional geopolymers in acidic environments.
      2  32