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Developing of buffer-precipitation method for lead metaborate (Pb(BO2)2 H2O) nanostructures Cover

Developing of buffer-precipitation method for lead metaborate (Pb(BO2)2 H2O) nanostructures

By: Berna Bulbul and  Seda Beyaz  
Open Access
|May 2020

Abstract

Amorphous lead metaborate (Pb(BO2)2 H2O) nanostructures were synthesized by a simpl and cost-effective synthesis method which is based on precipitation of lead ions using boric acid/sodium hydroxide buffer (pH 9.2) in the presence of polyethylene glycol (PEG). Scanning electron microscopy images showed that the average particle size is 30±9 nm and the particle shape is mostly spherical. The chemical formulation of Pb(BO2)2 H2O was confirmed by infrared spectroscopy, inductively coupled plasma and thermal gravimetric analysis (TGA). The percentage of PEG molecules on the particle surface equal to 2.5 % was determined by TGA. Optical reflectance measurement was performed by UV-Vis spectroscopy. Based on the Kubelka-Munk function, it was calculated that the Pb(BO2)2 H2O nanostructures have a direct band gap of 4.6 eV.

DOI: https://doi.org/10.2478/msp-2019-0092 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 138 - 142
Submitted on: Nov 14, 2018
Accepted on: Apr 23, 2019
Published on: May 8, 2020
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2020 Berna Bulbul, Seda Beyaz, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.