Ho Li Ngee
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Ho Li Ngee
Official Name
Ho, Li Ngee
Alternative Name
Li Ngee, Ho
Ho, Li Ngee
Ngee, Ho Li
Ho, L. N.
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Scopus Author ID
57219028372
Researcher ID
DDY-6348-2022

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  • Publication
    Hybrid system of photocatalytic fuel cell and Fenton process for electricity generation and degradation of Reactive Black 5
    ( 2017-01-01)
    Noradiba Nordin
    ;
    Ho Li Ngee
    ;
    Ong Soon An
    ;
    Abdul Haqi Ibrahim
    ;
    Wong Yee Shian
    ;
    Lee Sin Li
    ;
    Oon Yoong Sin
    ;
    Oon Yoong Ling
    A novel hybrid system composed of a photocatalytic fuel cell (PFC) and Fenton reactor was developed with the aim to degrade the azo dye Reactive Black 5 (RB5) and generate electricity. Compared to previously established system of bioelectro-Fenton system, microbial fuel cell (MFC) system has significant challenge in the development and operation system. Therefore, PFC is used instead of MFC to generate electrons for the Fenton system. The effect of azo dye (RB5) on each PFC and Fenton reactor was investigated. The experimental results showed that maximum power output was achieved in the absence of dye in the Fenton reactor of this hybrid system. Furthermore, higher degradation efficiency of RB5 could also be observed in the PFC reactor in this hybrid system.
  • Publication
    UVA-irradiated dual photoanodes and dual cathodes photocatalytic fuel cell: Mechanisms and Reactive Red 120 degradation pathways
    ( 2022-11-01)
    Ong Yong Por
    ;
    Ho Li Ngee
    ;
    Ong Soon An
    ;
    Abdul Haqi Ibrahim
    ;
    Banjuraizah Johar
    ;
    Thor Shen Hui
    ;
    Lee Sin Li
    ;
    Teoh Tean Peng
    To enhance dye removal and energy recovery efficiencies in single-pair electrode photocatalytic fuel cell (PFC-AC), dual cathodes PFC (PFC-ACC) and dual photoanodes PFC (PFC-AAC) were established. Results revealed that PFC-AAC yielded the highest decolorization rate (1.44 h−1) due to the promotion of active species such as superoxide radical (•O2−) and hydroxyl radical (•OH) when the number of photoanode was doubled. The results from scavenging test and UV-Vis spectrophotometry disclosed that •OH was the primary active species in dye degradation of PFC. Additionally, PFC-AAC also exhibited the highest power output (17.99 μW) but the experimental power output was much lower than the theoretical power output (28.24 μW) due to the strong competition of electron donors of doubled photoanodes to electron acceptors at the single cathode and its high internal resistance. Besides, it was found that the increments of dye volume and initial dye concentration decreased the decolorization rate but increased the power output due to the higher amount of sacrificial agents presented in PFC. Based on the abovementioned findings and the respective dye intermediate products identified from gas chromatography-mass spectrometry (GC-MS), the possible degradation pathway of RR120 was scrutinized and proposed.
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