Cu(II), Cd(II), Pb(II) and As(V) adsorption from aqueous solutions using magnetic iron-modified calcium silicate hydrate: Adsorption kinetic analysis

Valenzuela, Fernando; Quintana, Geraldine Ezquerra; Briso, Alejandro; Ide, Viviana; Basualto, Carlos; Gaete, José; Montes, Gonzalo

doi:10.1016/j.jwpe.2021.101951

Cited by 27 publications

(7 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The isotherms obtained by N 2 physisorption experiments revealed an increase in the surface area and pore volume of amine-functionalized magnetite nanoparticles (Fe 3 O 4 NP s -A1 and Fe 3 O 4 NP s -A2) compared to those of pure Fe 3 O 4 NP s previously reported (Figure S1 and Table S1). These results are in accordance with TEM results (Figure ), due to the drastic decrease in particle size after the functionalization with the two different amine derivative groups (Table S1). Furthermore, Fe 3 O 4 NP s -A1 and Fe 3 O 4 NP s -A2 still maintained the mesoporous structure of Fe 3 O 4 NP s after the functionalization.…”

Section: Resultssupporting

confidence: 91%

Mechanistic Insights into the Thermal Decomposition of Ammonium Perchlorate: The Role of Amino-Functionalized Magnetic Nanoparticles

et al. 2022

Self Cite

View full text Add to dashboard Cite

This work reports the characterization and application of two promising nanocatalysts for the thermal decomposition of ammonium perchlorate (AP). To obtain these composite materials, magnetite nanoparticles (Fe 3 O 4 NP s ) were functionalized with two different amine derivative groups, tertiary amine (Fe 3 O 4 NP s -A1) and quaternary amine. X-ray photoelectron spectroscopy and differential scanning calorimetry provided mechanistic insights into the thermal decomposition of AP. Furthermore, tertiary and quaternary amine groups play a critical role, where the presence of an extra proton could favor an electron−proton transfer as the ratedetermining step. Moreover, Fe 3 O 4 NP s -A1 causes a diminution of the high-temperature decomposition of AP positively to 335 °C, increasing the energy release by 278 J g −1 and consequently affording the lowest activation energy (102 kJ mol −1 ), indicating a low degree of thermal stability, and accelerating the thermal decomposition of AP.

show abstract

Section: Resultssupporting

confidence: 91%

Mechanistic Insights into the Thermal Decomposition of Ammonium Perchlorate: The Role of Amino-Functionalized Magnetic Nanoparticles

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…To address these issues, a variety of modifications have been proposed to enhance the functionality of silicates. These include the adjustment of their regulating structure [46][47][48], surface organic modification [49,50], and the creation of composites through the integration of silicates with other functional materials [51,52]. Such advancements provide inspiration for further exploration and applications of silicates in water treatment by the scientific community.…”

Section: Introductionmentioning

confidence: 99%

Recent advances of silicate materials for wastewater treatment: a review

Xu,

Wang,

2024

Mater. Res. Express

View full text Add to dashboard Cite

Heavy metal ions and organic pollutants cause irreversible damage to water environment, thereby posing significant threats to the well-being of organisms. The techniques of adsorption and photocatalytic degradation offer versatile solutions for addressing water pollution challenges, attributed to their inherent sustainability and adaptability. Silicates exhibit exceptional practicality in the realm of environmental protection owing to their structural integrity and robust chemical/thermal stability during hybridization and application process. Furthermore, the abundance of silicate reserves, coupled with their proven effectiveness, has garnered significant attention in recent years. This detailed review compiles and analyzes the extensive body of literature spanning the past six years (2018-2023), emphasizing the pivotal discoveries associated with employing silicates as water purification materials. This review article provides a comprehensive overview of the structure, classification, and chemical composition of diverse silicates and offers a thorough descriptive analysis of their performance in eliminating pollutants. Additionally, the utilization of diatomite as either precursors or substrates for silicates, along with the exploration of their corresponding purification mechanisms is discussed. The review unequivocally verifies the efficiency of silicates and their composites in the effective elimination of various toxic pollutants. However, the development of novel silicates capable of adapting to diverse environmental conditions to enhance pollution control, remains an urgent necessity.

show abstract

“…12 So far a variety of calcium silicate hydrate and calcium silicate hydrate based-composite materials have been reported, such as ultra-thin calcium silicate hydrate nanosheets, magnetic based composite, doped calcium silicate hydrate materials, etc., which has been investigated as adsorbents not only for metal ions, but also for drugs, phosphorus, proteins, etc. [11][12][13][14][15][16] Co-precipitation is a simple method to fabricate calcium silicate hydrate, with calcium salt or calcium hydroxide as calcium source and sodium silicate or tetraethyl orthosilicate as silicon source. The cost of silicon source accounts for a large part of the material cost.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the potential of modied calcium silicate hydrate in the eld of membrane was also explored. In previous studies, [11][12][13][14][15][16] most of calcium silicate hydrates achieved strong adsorption performance in the state of dispersed powder, suffering from the difficulty of recovery and the potential threat of secondary pollution. It can be solved by assembling adsorbent to porous membrane, with the advantages of fast adsorption rate, easy recovery and industrial amplication.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fly ash derived calcium silicate hydrate as a highly efficient and fast adsorbent for Cu(ii) ions: role of copolymer functionalization

Sun

Tang

et al. 2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

Cu(II), Cd(II), Pb(II) and As(V) adsorption from aqueous solutions using magnetic iron-modified calcium silicate hydrate: Adsorption kinetic analysis

Cited by 27 publications

References 37 publications

Mechanistic Insights into the Thermal Decomposition of Ammonium Perchlorate: The Role of Amino-Functionalized Magnetic Nanoparticles

Mechanistic Insights into the Thermal Decomposition of Ammonium Perchlorate: The Role of Amino-Functionalized Magnetic Nanoparticles

Recent advances of silicate materials for wastewater treatment: a review

Fly ash derived calcium silicate hydrate as a highly efficient and fast adsorbent for Cu(ii) ions: role of copolymer functionalization

Contact Info

Product

Resources

About