Synthesis of silica nanoparticles (SiNPs) from agro-wastes for removal of heavy metals from an aqueous medium – a mini review DOI Creative Commons

Senthilvel Barani,

Selvaraj Paul Sebastian,

Periyasamy Dhevagi

et al.

Green Chemistry Letters and Reviews, Journal Year: 2024, Volume and Issue: 17(1)

Published: Nov. 28, 2024

Heavy metals are micropollutants, persist in the environment and accumulate organisms, causing adverse effects to ecosystem. Synthetic inorganic minerals, polymers, activated carbon, ash, char, biomass powders, shells, etc. used as adsorbents remove heavy aqueous medium. Advancements nanotechnology green chemistry focus on novel materials for efficient removal of metals. Among different interesting nanomaterials, Silica nanoparticles (SiNPs) have recently emerged an important nanomaterial environmental remediation due their tractable pore size, distinct surface area, reactivity, outstanding biocompatibility, structural flexibility, stability, low toxicity, adoptable modification. Due huge availability biomass, SiNPs synthesis from crop residues agro-industries waste by-products has been widely suggested. The could be synthesized agro-waste through calcination, sol-gel, ball milling, Some produced certain recorded a specific area 5 653 m2 g-1 with particle size sub-50 nm. These wide range metals, viz., Cr, Ni, Pb, Cd, As, Hg, Zn, etc., solutions varied concentrations. This review briefly discusses various sources metal adsorption.

Language: Английский

Nano silica-mediated stabilization of heavy metals in contaminated soils DOI Creative Commons

Maryam Samani,

Yogesh K. Ahlawat,

Ahmad Golchin

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Sept. 3, 2024

Soil contamination with heavy metals presents a substantial environmental peril, necessitating the exploration of innovative remediation approaches. This research aimed to investigate efficiency nano-silica in stabilizing calcareous metal-contaminated soil. The soil was treated five levels 0, 100, 200, 500, and 1000 mg/kg incubated for two months. results showed that had specific surface area 179.68 $${\text{m}}^{2}/\text{g}$$ . At mg/kg, DTPA-extractable concentrations Pb, Zn, Cu, Ni, Cr decreased by 12%, 11%, 11.6%, 10%, 9.5% compared controls, respectively. Additionally, as application rate increased, both pH increased. augmentation adsorbent led decline exchangeable (EX) carbonate-bound fractions Cr, while distribution bonded Fe–Mn oxides, organic matter, residue use resulted an 8.0% reduction EX 4.5% 7.3% 7.1% 7.9% control treatment. Overall, our study highlights potential nano silica promising strategy addressing metal pollution contaminated soils, offering sustainable solutions restoration ecosystem protection.

Language: Английский

Citations

7
Fascinating Aspects of Nanosilicon Enabled Plant Stress Tolerance - A Comprehensive Review DOI Creative Commons
Sapna Grewal,

Rekha Boora,

Santosh Kumari

et al.

Plant Nano Biology, Journal Year: 2024, Volume and Issue: 8, P. 100077 - 100077

Published: May 1, 2024

The establishment of a resilient and enduring agricultural production system is important in order to meet the global need for food. Due dramatic climatic changes growing population pressure, traditional chemical-based farming approaches have proven inefficient. Globally, abiotic stresses substantial impact on crop yields across many crops. use silicon nanoparticles (nSi) has gained popularity last few years as means alleviate stress. addition nano Si supplement been found mitigate stress under adverse environmental conditions promote growth well overall development plants. Its rehabilitative properties are associated with increased activities antioxidant enzymes, preserving balance between elimination reactive oxygen species. accumulation and/or absorption nSi variety crops, along its mechanism action, discussed this study. These factors enhanced plant tolerance capacities, which support sustainable agriculture. In summary, review highlights significance nano-enabled methods using enhancing against potential address worldwide food security concerns.

Language: Английский

Citations

5
Design and Application of Stimuli‐Responsive Nanocomposite Hydrogels: A Review DOI Open Access
Xiaohan Guo, Huan Liu,

Aminov Nail

et al.

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract In order to improve the disadvantages of traditional hydrogels such as low mechanical strength and lack responsiveness, different types nanoparticles or nanostructures are added into hydrogel network through in situ polymerization, self‐assembly techniques, other strategies, giving a variety special properties, stimulation sensitivity, optical electrical reversibility. With development nano materials synthesis technology, nanocomposite have shown great potential drug delivery, tissue engineering, motion detection, wastewater treatment, been extensively studied recent years. This review comprehensively elucidates state‐of‐the‐art preparation strategies underlying response mechanisms diverse stimulus‐responsive hydrogels, spanning temperature, pH, humidity, electrical, light responses. It systematically dissects their applications biomedicine, environmental remediation, flexible sensing, composite phase change materials. Moreover, it delves future prospects challenges, emphasizing need for continuous innovation unlock full emerging fields address existing limitations.

Language: Английский

Citations

0
Magnetite-based pumice silica nanocomposite for lead adsorption from aqueous solution: The green synthesis approach DOI

Genet Tsegayse,

Zebene Kiflie,

Jemal Fito Nure

et al.

Chinese Journal of Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Novel pyridine isonicotinoyl hydrazone derivative: synthesis, complexation and investigation for decontamination of DR-81 from wastewater DOI Creative Commons
M.A. Ahmed, Eslam Salama, M.H.H. Mahmoud

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(42), P. 30924 - 30937

Published: Jan. 1, 2024

Herein, novel aroylhydrazone ( E / Z )- N ′-((3-methylpyridin-2-yl)methylene)isonicotinohydrazide ligand (MPIH) 3 and its Zn( ii )-MPIH complex 4 were synthesized investigated to adsorb direct red 81 dye (DR-81) from aqueous media.

Language: Английский

Citations

0
Reusable Porous SiO2 for Methylene Blue Removal: A Study on Adsorption and Regeneration Cycles DOI
Samara J. Cisneros-Trejo, F. Paraguay‐Delgado, A. Hernández–Hernández

et al.

Water Air & Soil Pollution, Journal Year: 2024, Volume and Issue: 235(11)

Published: Sept. 30, 2024

Language: Английский

Citations

0
Effective decontamination of DR-81 dye from aqueous solutions using eco-friendly graphene oxide nanoparticles DOI
Eslam Salama, Ahmed E. Mansy, Zhen‐Yu Tian

et al.

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(55), P. 63704 - 63717

Published: Nov. 5, 2024

Language: Английский

Citations

0
Synthesis of silica nanoparticles (SiNPs) from agro-wastes for removal of heavy metals from an aqueous medium – a mini review DOI Creative Commons

Senthilvel Barani,

Selvaraj Paul Sebastian,

Periyasamy Dhevagi

et al.

Green Chemistry Letters and Reviews, Journal Year: 2024, Volume and Issue: 17(1)

Published: Nov. 28, 2024

Heavy metals are micropollutants, persist in the environment and accumulate organisms, causing adverse effects to ecosystem. Synthetic inorganic minerals, polymers, activated carbon, ash, char, biomass powders, shells, etc. used as adsorbents remove heavy aqueous medium. Advancements nanotechnology green chemistry focus on novel materials for efficient removal of metals. Among different interesting nanomaterials, Silica nanoparticles (SiNPs) have recently emerged an important nanomaterial environmental remediation due their tractable pore size, distinct surface area, reactivity, outstanding biocompatibility, structural flexibility, stability, low toxicity, adoptable modification. Due huge availability biomass, SiNPs synthesis from crop residues agro-industries waste by-products has been widely suggested. The could be synthesized agro-waste through calcination, sol-gel, ball milling, Some produced certain recorded a specific area 5 653 m2 g-1 with particle size sub-50 nm. These wide range metals, viz., Cr, Ni, Pb, Cd, As, Hg, Zn, etc., solutions varied concentrations. This review briefly discusses various sources metal adsorption.

Language: Английский

Citations

0