Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2

Montanhera, Maykon A.; Venancio, Ricardo H. D.; Pereira, Éder Alves; Freitas, Renato G.; Paula, F. R. de

doi:10.1590/1980-5373-mr-2020-0377

Cited by 6 publications

(2 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For BioMOF 2 , the peak at 415 nm increases sharply with the color of the solution turning deeper dramatically due to the production of large amounts of the yellow insoluble matter. The process relies on the reversible hydrolysis of H 2 O 2 , which produces OH – and eventually produces O 2 2– , which is positively enhanced; thus, an amount of O 2 2– is captured by TiOSO 4 to form further Ti(O 2 )SO 4 . , Meanwhile, the release of gaseous oxygen is observed after a few seconds when H 2 O 2 is added into the aqueous dispersion of 2 (Figure S8). Therefore, the process of H 2 O 2 scavenging of BioMOF 2 circumvents the Cu 2+ -based Fenton-like reaction, leading to a rate-accelerated scavenging, which produces O 2 2– through hydrolysis of H 2 O 2 rather than • OH generated from homolysis.…”

Section: Resultsmentioning

confidence: 99%

Alkaline-Stable Peroxidase Mimics Based on Biological Metal–Organic Frameworks for Recyclable Scavenging of Hydrogen Peroxide and Detecting Glucose in Apple Fruits

Yang

Gong

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Enzyme mimics constitute a promising class of biocatalysts with potential applications in bioanalysis, biomedicine, etc. due to their high catalytic activity and substrate specificity, but they often suffer from low operational stability and difficulties in recyclable utilization. Herein, we adopted an acid–base treatment to create an efficient enzyme mimic material by taking advantage of biological metal–organic frameworks (BioMOFs) constructed of the Cu2+ ion and a plant growth regulator. The prepared deprotonated dinuclear BioMOF exhibits excellent stability in alkaline environments and high peroxidase-mimicking activity. The enzyme mimic shows a quick reaction capability of H2O2 scavenging in the linear range of 0–0.2 μM mL–1 under neutral conditions and a sustained scavenging ability under strong alkaline conditions. Unlike general Cu-based peroxidase mimics, the BioMOF directly hydrolyzes H2O2 into O2 2– instead of the •OH radical and degrades to its synthetic precursor. The cyclic utilization, therefore, can be achieved by the interconversion between the BioMOF and its degraded product. Additionally, a hybrid nanomaterial (BioMOF-NPs) was developed by immobilizing the BioMOF and chitosan nanoparticles. The fabricated BioMOF-NPs display improved reliability and repeatability of the H2O2-scavenging effect due to the large specific surface area. Based on the BioMOF-NPs, selective glucose determination is achieved in the linear range of 5–25 μM with a detection limit of 1.93 μM. The method is successfully utilized for the recyclable detection of glucose in apple fruits. This study offers a new strategy for designing structure-interconvertible BioMOFs for applications of biological analysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Alkaline-Stable Peroxidase Mimics Based on Biological Metal–Organic Frameworks for Recyclable Scavenging of Hydrogen Peroxide and Detecting Glucose in Apple Fruits

Yang

Gong

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…For example, in the sol-gel process, tetra-n-butyl orthotitanate (TNBT) [26], titanium butoxide (Ti(OBu) 4 ), and titanium tetra-isopropoxide (Ti{OCH(CH 3 ) 2 } 4 ) dissolved in isopropanol with silver nitrate as precursors are used [15]. Solutions TiOSO 4 [27], TiCl 4 [7], TiO(OH) 2 [28] are usually used for the chemical synthesis of titanium dioxides. In addition, surface active substances and other complementary chemicals are applied to prevent aggregation and to reach the homogeneity of titanium dioxide nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Characteristic of TiO2&Ag0 nanocomposites formed via transformation of metatitanic acid and titanium (IV) isopropoxide

Lavrynenko

Zahornyi

Paineau

et al. 2022

Materials Today: Proceedings

View full text Add to dashboard Cite

Photocatalytic and antimicrobial efficacy of PVDF/TiO₂ membranes fabricated by solution blow spinning

Padovani,

Sanches,

Moura Aouada

et al. 2023

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

With its ability to purify water and treat wastewater, photocatalytic membranes have become a promising solution. The membrane's unique properties allow for the separation of solid compounds and the degradation of organic materials through photocatalytic and antibacterial means. Poly(vinylidene fluoride)/titanium oxide (PVDF/TiO2) composite remain the materials of choice for making these membranes due to their economy, effectiveness, safety, and durability. In this work a photocatalytic membrane reactor (PMR) system was developed using PVDF/TiO2 membranes fabricated by the solution blow spinning (SBS) process. Obtaining photocatalytic membranes using this method is an efficient and ecological route that overcomes the disadvantage of separating the photocatalyst after the treatment is complete. The results of PMR system showed that the PVDF/TiO2 membrane could effectively remove total coliforms and E. coli from polluted water. After 10 min of contaminated water circulation through the PMR system, the presence of pathogens was not detected, indicating the efficiency of the obtained membranes.

show abstract

Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2

Cited by 6 publications

References 33 publications

Alkaline-Stable Peroxidase Mimics Based on Biological Metal–Organic Frameworks for Recyclable Scavenging of Hydrogen Peroxide and Detecting Glucose in Apple Fruits

Alkaline-Stable Peroxidase Mimics Based on Biological Metal–Organic Frameworks for Recyclable Scavenging of Hydrogen Peroxide and Detecting Glucose in Apple Fruits

Characteristic of TiO2&Ag0 nanocomposites formed via transformation of metatitanic acid and titanium (IV) isopropoxide

Photocatalytic and antimicrobial efficacy of PVDF/TiO₂ membranes fabricated by solution blow spinning

Contact Info

Product

Resources

About

Synthesis of TiO2 Tubes Via Dissolution of TiOSO4 Rod Using H2O2

Cited by 6 publications

References 33 publications

Alkaline-Stable Peroxidase Mimics Based on Biological Metal–Organic Frameworks for Recyclable Scavenging of Hydrogen Peroxide and Detecting Glucose in Apple Fruits

Alkaline-Stable Peroxidase Mimics Based on Biological Metal–Organic Frameworks for Recyclable Scavenging of Hydrogen Peroxide and Detecting Glucose in Apple Fruits

Characteristic of TiO2&Ag0 nanocomposites formed via transformation of metatitanic acid and titanium (IV) isopropoxide

Photocatalytic and antimicrobial efficacy of PVDF/TiO2 membranes fabricated by solution blow spinning

Contact Info

Product

Resources

About

Photocatalytic and antimicrobial efficacy of PVDF/TiO₂ membranes fabricated by solution blow spinning