TY - JOUR
T1 - Eco-Friendly Facile Conversion of Waste Eggshells into CaO Nanoparticles for Environmental Applications
AU - Adaikalam, Kathalingam
AU - Hussain, Sajjad
AU - Anbu, Periasamy
AU - Rajaram, Arulmozhi
AU - Sivanesan, Iyyakkannu
AU - Kim, Hyun Seok
N1 - Publisher Copyright:
© 2024 by the authors.
PY - 2024/10
Y1 - 2024/10
N2 - Amongst the many types of food waste, eggshells contain various minerals and bioactive materials, and they can become hazardous if not properly disposed of. However, they can be made useful for the environment and people by being converted to environmentally friendly catalytic materials or environmental purification agents. Simple calcination can enhance their properties and thereby render them suitable for catalytic and environmental applications. This work aimed to prepare CaO from waste eggshells and examine its effectiveness in photocatalytic pollution remediation, electrocatalytic activity, optical sensing, and antibacterial activities. As opposed to other techniques, this calcination process does not require any chemical reagents due to the high purity of CaCO3 in eggshells. Calcium oxide nanoparticles were prepared by subjecting waste eggshells (ES) to high-temperature calcination, and the synthesized CaO nanoparticles were characterized for their structural, morphological, chemical, optical, and other properties. Furthermore, their photocatalytic degradation of methylene blue dye and antibacterial efficiency against Escherichia coli and Staphylococcus aureus were investigated. It was found that the green-converted CaO can be efficiently used in environmental applications, showing good catalytic properties.
AB - Amongst the many types of food waste, eggshells contain various minerals and bioactive materials, and they can become hazardous if not properly disposed of. However, they can be made useful for the environment and people by being converted to environmentally friendly catalytic materials or environmental purification agents. Simple calcination can enhance their properties and thereby render them suitable for catalytic and environmental applications. This work aimed to prepare CaO from waste eggshells and examine its effectiveness in photocatalytic pollution remediation, electrocatalytic activity, optical sensing, and antibacterial activities. As opposed to other techniques, this calcination process does not require any chemical reagents due to the high purity of CaCO3 in eggshells. Calcium oxide nanoparticles were prepared by subjecting waste eggshells (ES) to high-temperature calcination, and the synthesized CaO nanoparticles were characterized for their structural, morphological, chemical, optical, and other properties. Furthermore, their photocatalytic degradation of methylene blue dye and antibacterial efficiency against Escherichia coli and Staphylococcus aureus were investigated. It was found that the green-converted CaO can be efficiently used in environmental applications, showing good catalytic properties.
KW - antibacterial activity
KW - calcination
KW - calcium oxide
KW - dye degradation
KW - methylene blue dye
KW - photocatalyst
KW - waste eggshell utilization
UR - http://www.scopus.com/inward/record.url?scp=85207677976&partnerID=8YFLogxK
U2 - 10.3390/nano14201620
DO - 10.3390/nano14201620
M3 - Article
AN - SCOPUS:85207677976
SN - 2079-4991
VL - 14
JO - Nanomaterials
JF - Nanomaterials
IS - 20
M1 - 1620
ER -