Hoo Peng Yong
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Preferred name
Hoo Peng Yong
Official Name
Hoo, Peng Yong
Translated Name
Yong Hoo
Alternative Name
Hoo, P. Y.
Peng, Yong Hoo
Hoo, Pengyong
Main Affiliation
Scopus Author ID
56149784600

Research Output
Now showing 1 - 2 of 2
  • Publication
    Recent advancements in smart materials for the removal of organic, inorganic and microbial pollutants in water treatment: a review
    (Elsevier, 2025-02)
    Soon Wah Goh
    ;
    Ng Qi Hwa
    ;
    Siti Kartini Enche Ab Rahim
    ;
    Siew Chun Low
    ;
    Hoo Peng Yong
    ;
    Ryan Yow Zhong Yeo
    ;
    Thiam Leng Chew
    ;
    Zeinab Abbas Jawad
    As the expeditious urban and industrial expansion, a substantial portion of wastewater is produced annually, posing a significant threat to environmental contamination and dwindling the availability of clean water resources. Water contaminants are generally categorized into organic, inorganic, and microbial pollutants. This escalating water pollution crisis has initiated the research community to innovate novel, effective and economical cost methods for water treatment applications. Among the approaches, adsorption has been marked by its importance in water treatment. Recent advancements in the field have focused on developing smart adsorbent materials capable of modifying their physicochemical properties in response to various external stimuli (light and magnetic field) and internal stimuli (thermal and pH fluctuation). The exploration of smart materials has captivated the interest of researchers worldwide and opened up exciting avenue for more efficient water treatment outcomes towards removing different types of pollutants. Notably, these smart materials demonstrate high pollutant uptake and release efficacy when responding to specific stimuli changes, ensuring efficient removal of contaminants and exerting self-cleaning properties. Such materials offer an environmentally benign advantage by eliminating the need for toxic organic solvents during regeneration. The review compiles and highlights the characteristics and performance of several stimuli-responsive smart materials, including thermal, light, magnetic and pH regarding organic, inorganic and microbial pollutants removal efficiencies. A particular focus is given to multi-stimuli responsive materials in environmental applications that represent the modern era and transformation of water treatment methodologies, followed by a discussion on the challenges and prospects of this particular research area.
  • Publication
    Facile synthesis of hybrid-polyoxometalates nanocomposite for degradation of cationic and anionic dyes in water treatment
    (Academic Enhancement Department, King Mongkut's University of Technology North Bangkok, 2025-03)
    Wei Wei Leow
    ;
    Alvin Duke
    ;
    Siti Kartini Enche Ab Rahim
    ;
    Ng Qi Hwa
    ;
    Norazharuddin Shah Abdullah
    ;
    Hoo Peng Yong
    ;
    Amira Mohd Nasib
    ;
    Muhamad Qauyum Zawawi Ahamad Suffin
    Photocatalysis emerges as a promising method for treating organic dye contaminated wastewater. This process involves the use of photocatalysts through light activation, typically semiconductors such as titanium dioxide (TiO2) or polyoxometalates (POM) to generate reactive species capable of degrading organic pollutants. Several factors influence the photodegradation of ionic and cationic dyes including chemical properties, reaction mechanism and degradation efficiency. This work evaluated photodegradation performance of methyl orange (MO) and malachite green (MG) dyes using hybrid-polyoxometalate (HPOM) photocatalyst. Fourier Transform Infrared Spectroscopy (FTIR) identified the characteristic band at 3463.66 cm–1 (O-H) and 997.74 cm–1 (W-O). Scanning Electron Microscopy (SEM) revealed the presence of rod-like and granular structures in HPOM, representing silver acetate and sodium tungstate. X-ray diffraction (XRD) confirmed characteristic peak of Keggin structure, revealing high crystallinity of HPOM. UV-assisted photodegradation was evaluated on different parameters (initial dye concentration, photocatalyst dosage and pH), highlighting HPOM’s better affinity for degrading cationic dye. The optimum photodegradation conditions for MG and MO dyes were 20 ppm dye concentration, 100 mg photocatalyst dosage, and pH 7 and 8, respectively. The kinetic data was fitted with the Langmuir Hinshelwood kinetic model, indicating pseudo-first-order kinetics. HPOM exhibited a higher rate constant, k for MG (k = 0.0068 min–1) than MO (k = 0.0029 min–1).
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