Ni-doped and Ni/Cr co-doped TiO2 nanotubes for enhancement of photocatalytic degradation of methylene blue

Abukhadra, Mostafa R.; Ahmed, Ashour M.; Shehata, Nora; Betiha, Mohamed A.; Rabie, Abdelrahman M.

doi:10.1016/j.jcis.2019.07.070

Cited by 143 publications

(56 citation statements)

References 65 publications

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“…As for Camposeco et al., they confirmed the relationship existing between the morphology of TiNTs and the annealing temperature, justifying this by the slight change in the inner and outer diameters as a function of the annealing temperature, thus showing an unorganized tubular agglomeration that can be attributed to the crystallization of the anatase phase. The transformation of TiNTs follows the sequence expressed by the following equation, while the temperature increased from 140 to 500 °C .

true normalH_{2} Ti_{3} normalO_{7} . xH_{2} normalO \to normalH_{2} Ti_{3} normalO_{7} \to normalH_{2} Ti_{6} normalO_{13} \to TiO_{2} (B) \to TiO_{2} (anatase)

…”

Section: Preparation Of Tintsmentioning

confidence: 99%

Study of 1D Titanate‐Based Materials –New Modification of the Synthesis Procedure and Surface Properties‐Recent Applications

Ameur

Bachir

2020

ChemistrySelect

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This paper represents a general study of titanate nanotubes (TiNTs) which are among the most important materials in the field of catalysis. This research work covers more than 100 publications about the formulation, characterisation and most recent applications of TiNTs. TiNTs can be prepared by different methods, namely the anodic deposition, sol-gel template synthesis and alkaline hydrothermal treatment. The present study focuses on the preparation of this tubular structure by alkaline treatment, using the latest and most recent processes that have been introduced in this method (stirring, acid nature, annealing temperature, etc). The surface properties, such as the point of zero charge (P.Z.C), acid-base nature and light absorption, of TiNTs are also evoked. In the end, some recent and important TiNTs applications in the field of renewable energies are reported (H 2 production and methanation). In addition, NO reduction, CO oxidation, photocatalysis and organic synthesis are also mentioned. Therefore, it may be said that this paper is a structured study about TiNTs for the purpose of making the reader aware of their importance, understand their synthesis, and know their scope of applications. To conclude, the most important data, acquired through various characterization techniques, are provided.[a] Dr.

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true normalH_{2} Ti_{3} normalO_{7} . xH_{2} normalO \to normalH_{2} Ti_{3} normalO_{7} \to normalH_{2} Ti_{6} normalO_{13} \to TiO_{2} (B) \to TiO_{2} (anatase)

…”

Section: Preparation Of Tintsmentioning

confidence: 99%

Study of 1D Titanate‐Based Materials –New Modification of the Synthesis Procedure and Surface Properties‐Recent Applications

Ameur

Bachir

2020

ChemistrySelect

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“…Raman scattering is a spectroscopic method for the detection of pollutants in water. Raman spectroscopy is a non-contact and non-destructive technique that analyzes only a small volume of a substance without requiring any preparation [4,5]. Raman spectrum has a wide range of applications for both qualitative and quantitative chemical and biological analyses because of its high selectivity and low absorption of aqueous solution [6,7].…”

Section: Introductionmentioning

confidence: 99%

Nanoporous chromium thin film for active detection of toxic heavy metals traces using surface-enhanced Raman spectroscopy

Ahmed

Abukhadra

2020

Mater. Res. Express

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In this work, nanoporous Cr thin film was designed by a novel method for the detection of toxic heavy metals based on surface-enhanced Raman spectroscopy. Nanoporous Cr thin film has been deposited on an aluminum substrate through a developed etching/DC electrodeposition technique of the hexagonal porous anodic alumina (PAA) template/Cr nanoparticles, respectively. The structures and morphologies of the fabricated samples were investigated by different characterization tools. The FE-SEM illustrates nanoporous Cr particles of rough surfaces and different sizes are formed on the Al substrate. Also, there are ultrafine Cr nanoparticles covered the surface of the Cr nanoporous film that can act as hot-spots during the detection of heavy metal ions. The proposed sensor established high selectivity at low concentrations between different heavy metal ions (Pb 2+ , Hg 2+ , Cd 2+ ). Also, it showed excellent selectivity towards Pb 2+ over the other metal ions. Hence, this category of sensors could be applied for sensitive determining of Pb 2+ , Hg 2+ , Cd 2+ in contaminated water.

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“…Co-doped nanoparticles exhibit higher visible light absorption than single doped TiO 2 due to a synergistic effect between the two dopants, which can efficiently increase the photocatalytic performance [150]. Co-doping can be divided into different metal elements co-doping [151][152][153], metal elements and non-metal elements doping [154][155][156] and different non-metal elements doping [157][158][159]. As shown in Table 2, many researchers have used co-doping method to modify TiO 2 and tested the photocatalytic performance of the materials.…”

Section: Different Elements Co-doping Tiomentioning

confidence: 99%

Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review

Zhou

2020

Catalysts

149

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A high-efficiency method to deal with pollutants must be found because environmental problems are becoming more serious. Photocatalytic oxidation technology as the environmentally-friendly treatment method can completely oxidate organic pollutants into pollution-free small-molecule inorganic substances without causing secondary pollution. As a widely used photocatalyst, titanium dioxide (TiO2) can greatly improve the degradation efficiency of pollutants, but several problems are noted in its practical application. TiO2 modified by different materials has received extensive attention in the field of photocatalysis because of its excellent physical and chemical properties compared with pure TiO2. In this review, we discuss the use of different materials for TiO2 modification, highlighting recent developments in the synthesis and application of TiO2 composites using different materials. Materials discussed in the article can be divided into nonmetallic and metallic. Mechanisms of how to improve catalytic performance of TiO2 after modification are discussed, and the future development of modified TiO2 is prospected.

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Ni-doped and Ni/Cr co-doped TiO2 nanotubes for enhancement of photocatalytic degradation of methylene blue

Cited by 143 publications

References 65 publications

Study of 1D Titanate‐Based Materials –New Modification of the Synthesis Procedure and Surface Properties‐Recent Applications

Study of 1D Titanate‐Based Materials –New Modification of the Synthesis Procedure and Surface Properties‐Recent Applications

Nanoporous chromium thin film for active detection of toxic heavy metals traces using surface-enhanced Raman spectroscopy

Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review

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