Author
Pei Yoong Koh
Bio: Pei Yoong Koh is an academic researcher from Georgia Institute of Technology. The author has contributed to research in topics: Nanoparticle & Magnetite. The author has an hindex of 4, co-authored 5 publications receiving 1156 citations.
Topics: Nanoparticle, Magnetite, Zeolite, Iron oxide nanoparticles, Hematite
Papers
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TL;DR: In this article, the properties, applications, and syntheses of three magnetic iron oxides (hematite, magnetite, and maghemite) are discussed and methods of preparation that allow control over the size, morphology, surface treatment and magnetic properties of their nanoparticles.
1,206 citations
TL;DR: In this paper, the properties, applications, and syntheses of three magnetic iron oxides (hematite, magnetite, and maghemite) are discussed and methods of preparation that allow control over the size, morphology, surface treatment and magnetic properties of their nanoparticles.
Abstract: Magnetic nanoparticles exhibit many interesting properties that can be exploited in a variety of applications such as catalysis and in biomedicine. This review discusses the properties, applications, and syntheses of three magnetic iron oxides – hematite, magnetite, and maghemite – and outlines methods of preparation that allow control over the size, morphology, surface treatment and magnetic properties of their nanoparticles. Some challenges to further development of these materials and methods are also presented.
130 citations
TL;DR: In this article, the precipitation and self-assembly of magnesium hydroxide Mg(OH)2 nanopetals on dispersed zeolite 4A particles was investigated, and it was determined that MgOH2 interacted with bridging hydroxyl protons (SiOHAl), but not with silanol or aluminol groups.
9 citations
TL;DR: In this paper, the formation of petal-like nanostructures can be achieved by the addition of ammonium hydroxide to aqueous magnesium chloride, and their growth can be controlled by concentration and pH.
9 citations
Patent•
01 Jul 2014
TL;DR: In this paper, an inorganic halosilane slurry comprising (i) tetrahalosilane, trihalosilanes, dihalosilicane, or any combination thereof, (ii) silicon particles, and (iii) heavies is passed through a thin-film dryer to remove halosilicanes and form a solid residue comprising silicon particles.
Abstract: Methods of recovering hydrohalosilanes from reaction residues are disclosed. An inorganic halosilane slurry comprising (i) tetrahalosilane, trihalosilane, dihalosilane, or any combination thereof, (ii) silicon particles, and (iii) heavies is passed through a thin-film dryer to remove halosilanes and form a solid residue comprising silicon particles. Heavies also may be removed as the slurry passes through the thin-film dryer.
2 citations
Cited by
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TL;DR: This review outlined the latest applications of iron oxide nanomaterials in wastewater treatment, and gaps which limited their large-scale field applications, as well as the outlook for potential applications and further challenges.
1,632 citations
TL;DR: This review covers recent advances in the development of SPions together with their possibilities and limitations from fabrication to application in drug delivery and the state-of-the-art synthetic routes and surface modification of desired SPIONs for drug delivery purposes.
1,557 citations
TL;DR: A comprehensive review of recent synthetic methods along with associated synthesis mechanisms, characterization, fundamental properties, and promising applications of Cupric oxide (CuO) nanostructures is presented in this article.
1,030 citations
TL;DR: This review summarizes the methods for the preparation of iron oxide NPs, size and morphology control, and magnetic properties with recent bioengineering, commercial, and industrial applications.
Abstract: Recently, iron oxide nanoparticles (NPs) have attracted much consideration due to their unique properties, such as superparamagnetism, surface-to-volume ratio, greater surface area, and easy separation methodology. Various physical, chemical, and biological methods have been adopted to synthesize magnetic NPs with suitable surface chemistry. This review summarizes the methods for the preparation of iron oxide NPs, size and morphology control, and magnetic properties with recent bioengineering, commercial, and industrial applications. Iron oxides exhibit great potential in the fields of life sciences such as biomedicine, agriculture, and environment. Nontoxic conduct and biocompatible applications of magnetic NPs can be enriched further by special surface coating with organic or inorganic molecules, including surfactants, drugs, proteins, starches, enzymes, antibodies, nucleotides, nonionic detergents, and polyelectrolytes. Magnetic NPs can also be directed to an organ, tissue, or tumor using an external magnetic field for hyperthermic treatment of patients. Keeping in mind the current interest in iron NPs, this review is designed to report recent information from synthesis to characterization, and applications of iron NPs.
941 citations
TL;DR: A brief description of cancer pathology and the characteristics that are important for tumor‐targeted NM design are provided, followed by an overview of the different types of NMs explored to date, covering synthetic aspects and approaches explored.
Abstract: The application of nanomaterials (NMs) in biomedicine is increasing rapidly and offers excellent prospects for the development of new non-invasive strategies for the diagnosis and treatment of cancer. In this review, we provide a brief description of cancer pathology and the characteristics that are important for tumor-targeted NM design, followed by an overview of the different types of NMs explored to date, covering synthetic aspects and approaches explored for their application in unimodal and multimodal imaging, diagnosis and therapy. Significant synthetic advances now allow for the preparation of NMs with highly controlled geometry, surface charge, physicochemical properties, and the decoration of their surfaces with polymers and bioactive molecules in order to improve biocompatibility and to achieve active targeting. This is stimulating the development of a diverse range of nanometer-sized objects that can recognize cancer tissue, enabling visualization of tumors, delivery of anti-cancer drugs and/or the destruction of tumors by different therapeutic techniques.
842 citations