Rapid room-temperature preparation of MoO_3−x quantum dots by ultraviolet irradiation for photothermal treatment and glucose detection

Abstract

Oxygen deficient molybdenum oxide (MoO3−x) spurred intense scientific interest in biomedical research owing to the strong localized surface plasmon resonance (LSPR) effect in NIR region.

Modified top-down approach for synthesis of molybdenum oxide quantum dots: sonication induced chemical etching of thin films

“…25 Moreover, oxygen decient MoO 3Àx (2 < x < 3) QDs used for photothermal ablation of cancer cells due to strong near infrared (NIR) absorption and high photothermal conversion efficiency. 26,27 MoO x QDs containing in solution phase of hydrochloric acid (HCl) have a potential application in photothermal treatment and biological sensing due to low cost production and high sensitivity. 26,27 This solution phase of QDs are also applied in rapid colorimetric detection of glucose.…”

“…26,27 MoO x QDs containing in solution phase of hydrochloric acid (HCl) have a potential application in photothermal treatment and biological sensing due to low cost production and high sensitivity. 26,27 This solution phase of QDs are also applied in rapid colorimetric detection of glucose. 26 MoO x nano-materials can be well extracted from its solution phase.…”

“…26,27 This solution phase of QDs are also applied in rapid colorimetric detection of glucose. 26 MoO x nano-materials can be well extracted from its solution phase. T. T. P. Pham et al reported that the heat treatment at elevated temperature $150 C for 1 hour duration eliminates HCl acid and water from the solution containing MoO x , and are able to extract MoO x nano-materials in powder form.…”

“…23,29 Generally, the synthesis of MoO x QDs can be classied in two approaches: top-down and bottom-up method. 26,30 Top-down approach mainly relies on weakening the van der Waals interaction between adjacent layers and breaking the strong covalent bonding within each layer to exfoliate the structure or bulk materials. 26,31 Alternatively, QDs of layered materials prepared by a top-down approach do not require an insulating ligand coating, which is deleterious to electrical transport of the materials, especially in the application of catalysis and electronics.…”

“…26,30 Top-down approach mainly relies on weakening the van der Waals interaction between adjacent layers and breaking the strong covalent bonding within each layer to exfoliate the structure or bulk materials. 26,31 Alternatively, QDs of layered materials prepared by a top-down approach do not require an insulating ligand coating, which is deleterious to electrical transport of the materials, especially in the application of catalysis and electronics. 22,31 Top-down approaches, such as laser ablation, 32 ebeam lithography, 33 can be used to reduce the particle size.…”