Surface Functionalization of Zinc Oxide Nanoparticles: An Investigation in the Aerosol State

Abstract

The interactions of the simple amine functional groups with the surfaces of ZnO aerosol nanoparticles have been investigated. The ZnO particles were synthesized from the metal−organic precursor methylzinc isopropoxide {[CH 3 ZnOCH(CH 3 ) 2 ] 4 , MZI}. Solid MZI was evaporated at 85−120 °C, and then swept by an inert carrier gas at atmospheric pressure through a tube furnace operating at 300−900 °C. Thermal decomposition of MZI led to the formation of stoichiometric ZnO nanoparticles of mobility diameter 3−50 nm. The size, structure, and composition of synthesized particles were characterized by differential mobility analysis (DMA), X-ray diffraction (XRD), transmission electron microscopy (TEM), and Fourier transform IR spectroscopy (FTIR). The aerosolized ZnO nanoparticles were reacted with two gas-phase organic species: 1-butylamine and 1-hexylamine. Uptake was monitored by tandem differential mobility analysis (T-DMA). These results represent the first work on surface functionalization of ZnO nanoparticles in the aerosol state. They establish a new approach for manipulating quantum dot materials in the aerosol state.

Improvement in Corrosion Protection of Zinc by A Natural Inhibitor Incorporated with Zinc Oxide Nanoparticles in an Acidic Medium Evaluated using Gravimetric Measurement, Electrochemical Method and Atomic Force Microscopy

“…Figure 3a, it can be noted that there are some additional peaks observed in the np-natural inhibitor compared with the ZnONPs. This confirms the formation of a nano-shell of ZnONPs in the coriander seed extract 26 . The particle sizes of the ZnONPs and np-natural inhibitor were investigated using TEM.…”

Smart Fortified PHBV-CS Biopolymer with ZnO–Ag Nanocomposites for Enhanced Shelf Life of Food Packaging

“…Figure shows a strong absorption peak at 450 cm –1 , which is attributed to the Zn–O stretching vibration of the ZnO NPs . The intensity of the ZnO peak reduced after the formation of Ag NPs on the surface of ZnO NPs. , The absorption peak in NCs BP at 460 cm –1 attributed to the stretching vibration of ZnO photons, indicates the strong NCs–matrix interactions . The broad absorption peak at 3450 cm –1 is attributed to the hydroxyl group on the surface of NCs.…”

“…50,56 The absorption peak in NCs BP at 460 cm −1 attributed to the stretching vibration of ZnO photons, indicates the strong NCs−matrix interactions. 57 The broad absorption peak at 3450 cm −1 is attributed to the hydroxyl group on the surface of NCs. The weak peak at 3440 cm −1 is attributed to the hydroxyl group, which demonstrates the hydrogen-bond formation with the carbonyl of the ester group of BP at the expense of breaking the H-bonding among the hydroxyl groups of the NCs.…”

Photoionization of Nanosized Aerosol Gold Agglomerates and Their Deposition To Form Nanoscale Islands on Substrates

“…This implies that controllable ranges between gold agglomerates may not be broad enough to fabricate a variety of gold island configurations. To increase the distance range, the agglomerated gold particles may often need to be treated with high temperatures , or surface functionalization with polar components , to form broader ranges for the charges on a particle surface.…”