Influence of Impurity on the Properties of Chemically Synthesized Calcium Hydroxide

Authors Harish1, Pushpendra Kumar1, Jyoti Kumari1, Priyanka Phalswal2, Pawan K. Khanna2, Amena Salim3, Rahul Singhal3, Anoop Kumar Mukhopadhyay1, Rajendra P. Joshi4

1Department of Physics, Manipal University Jaipur, Jaipur-303007, Rajasthan, India

2Nano-chemistry Lab, Department of Applied Chemistry, DIAT, Girinagar, Pune 411025, India

3Department of Physics, Malaviya National Institute of Technology, Jaipur-302017, India

4RI Instruments and Innovation India, Haldwani, 263139, Uttarakhand, India

Issue Volume 13, Year 2021, Number 1
Dates Received 08 January 2021; revised manuscript received 10 February 2021; published online 25 February 2021
Citation Harish, Pushpendra Kumar, Jyoti Kumari, et al., J. Nano- Electron. Phys. 13 No 1, 01029 (2021)
PACS Number(s) 81.05. – t, 81.05Je
Keywords Calcium hydroxide, NaOH, NaNO3, TGA-DTA, Impurity (5) , Chemical synthesis (5) .

Here we report synthesis and characterization of chemically synthesized calcium hydroxide (Ca(OH)2) with and without deliberate presence of NaNO3 as an impurity. Calcium nitrate tetrahydrate (Ca(NO3)2.4H2O) is used as precursor and alkaline NaOH solution is used as precipitant to synthesize the Ca(OH)2 samples. The samples were characterized by XRD, FESEM, FTIR spectroscopy, DTA, TGA and UV-Vis spectroscopy techniques. From the UV-Vis spectroscopy results, it is found that the Ca(OH)2 with NaNO3 impurity has higher bandgap than the sample without NaNO3. The weight loss in TGA is also more for the Ca(OH)2 with impurity than the one for without impurity. The results are discussed in terms of composition formed during synthesis process.

List of References