Functionalization of diatomite with glycine and amino silane for formaldehyde removal

Di, Yong-hao; Yuan, Fang; Ning, Xiao-tian; Jia, Hu; Liu, Yang‐Yu; Zhang, Xiang-wei; Li, Chunquan; Zheng, Shuilin; Sun, Zhiming

doi:10.1007/s12613-020-2245-3

Cited by 10 publications

(2 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This significant enhancement can be attributed to the greater abundance of active sites on the surface of K-MnO2-NH2, which are available for capturing Cr(VI) ions as the dosage increases (Guo et al 2021) (Azzam et al 2017). The observed result is in line with expectations and correlates effectively with the findings of other studies employing metal oxides, such as iron oxide (Kaur et al 2021), and diatomite functionalization (Di et al 2022).…”

Section: Effect Of Adsorbent Dosagesupporting

confidence: 87%

Enhancing hexavalent chromium removal using amino-functionalized manganese oxide (birnessite) for improved adsorption efficiency

Slek,

Amarray,

Salmi

et al. 2024

Preprint

View full text Add to dashboard Cite

This study investigates the use of functionalized manganese oxide (K-MnO2-NH2) for removing Cr(VI) ions, a notably hazardous heavy metal contaminant,, from wastewater. The synthesis of K-MnO2-NH2 occurred in two steps followed by comprehensive characterization using various techniques, confirming its formation as pure-phase. The material demonstrated a high chromium removal efficiency (up to 90% at pH 2) attributed primarily to the introduction of amine groups through functionalization with 3-aminopropyltriethoxysilane (APTES). These amine groups create active sites displaying a strong affinity towards Cr(VI) ions. Kinetic studies suggest a chemical reaction governs the adsorption process, while thermodynamic data indicate it to be exothermic. Freundlich isotherm best describes the adsorption behaviour compared to Langmuir and Temkin models. K-MnO2-NH2 effectively removed Cr(VI) from real wastewater, achieving a removal efficiency of around 41% and causing a visible discoloration. Remarkably, the material exhibits excellent reusability, maintaining over 80% removal efficiency after five cycles without any regeneration procedures. This innovative approach provides a sustainable and efficient method for removing Cr(VI) from wastewater, showcasing the considerable potential of K-MnO2-NH2 in environmental remediation and water purification efforts.

show abstract

Section: Effect Of Adsorbent Dosagesupporting

confidence: 87%

Enhancing hexavalent chromium removal using amino-functionalized manganese oxide (birnessite) for improved adsorption efficiency

Slek,

Amarray,

Salmi

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Natural minerals, including diatomite [28][29][30], kaolinite [31][32][33], halloysite [34], etc., have the features of abundant pore structure and good stability and are environmentally friendly. Among them, natural diatomite is a siliceous biological sedimentary rock mainly composed of amorphous silica [35]. It is naturally endowed with a disk-shaped structure and a macroporous-mesoporous system, which makes it an excellent support candidate.…”

Section: Introductionmentioning

confidence: 99%

Natural Diatomite Supported Zirconium-Doped TiO2 with Tailoring Band Structure for Enhanced Visible-Light Photocatalytic Properties

Yuan

Zhang

et al. 2022

Nanomaterials

Self Cite

View full text Add to dashboard Cite

The development of economically applicable, highly efficient and low cost photocatalytic materials has always been a challenge. In this work, we report a zirconium doped TiO2/diatomite (ZrTD) composite with enhanced visible light-induced photocatalytic activity. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, UV–VIS diffused reflectance spectroscopy, high-performance liquid chromatography-mass spectrometry, photoluminescence and X-ray photoelectron spectroscopy, respectively. The optimal doping ratio of zirconium into TiO2 was obtained at 3% (3%ZrTD composite), and the degradation rate constant of which tetracycline (TC) is up to around 8.65 times higher that of zirconium doped TiO2. In addition, zirconium doping introduces the impurity levels of Zr 3d and oxygen vacancies into the lattice of TiO2, resulting in broadening the light absorption range, reducing the band gap, and improving the separation efficiency of photogenerated electron-hole pairs, thus endowing with visible light photocatalytic properties. Moreover, both the photogenerated holes (h+) and superoxide (•O2−) radicals are responsible for the degradation process of TC, and a possible degradation pathway and the corresponding intermediate products of TC by ZrTD composite are also proposed in detail.

show abstract

Diatomaceous Earth‐Containing Linseed Oil‐Based Environmentally Friendly Hydrophobic Coatings

Birtane

2024

ChemistrySelect

View full text Add to dashboard Cite

The use of bio‐based building blocks for the synthesis of polymers is increasing day by day. Coatings prepared by modifying bio‐based building blocks such as linseed oil (LO) and diatomaceous earth (DE) are very promising. In this study, bio‐based hydrophobic coatings were prepared by cationic photopolymerization technique using epoxidized linseed oil (ELO) and dimer diamine‐modified diatomaceous earth. The bio‐based coatings with hydrophobic properties were prepared by using the spin coating method. ELO was characterized by Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (1H‐NMR). The thermal properties of the prepared coatings were determined by thermogravimetric analysis (TGA). The pendulum hardness, pencil hardness, and gel content of the prepared coatings were examined. Also, the hydrophobicity of the obtained bio‐based coatings was determined by contact angle measurements. The highest contact angle among the investigated compositions was found to be 110°.

show abstract

Functionalization of diatomite with glycine and amino silane for formaldehyde removal

Cited by 10 publications

References 39 publications

Enhancing hexavalent chromium removal using amino-functionalized manganese oxide (birnessite) for improved adsorption efficiency

Enhancing hexavalent chromium removal using amino-functionalized manganese oxide (birnessite) for improved adsorption efficiency

Natural Diatomite Supported Zirconium-Doped TiO2 with Tailoring Band Structure for Enhanced Visible-Light Photocatalytic Properties

Diatomaceous Earth‐Containing Linseed Oil‐Based Environmentally Friendly Hydrophobic Coatings

Contact Info

Product

Resources

About