Effect of Lanthanum Loading on the Photocatalytic Degradation of Brilliant Yellow and Acid Blue Dyes in Visible Light and Sunlight over La2O3-TiO2 Nanocomposites DOI Open Access
Amrutha Vasantha,

Burri Vijayalaxmi,

Kothabai Venkatesham

et al.

Asian Journal of Chemistry, Journal Year: 2023, Volume and Issue: 36(1), P. 69 - 80

Published: Dec. 31, 2023

La-doped TiO2 nanocomposites were synthesized using the sol-gel process with different proportions of lanthanum doping (1-5 wt.%). The analyzed thoroughly by X-ray diffraction (XRD), nitrogen adsorption, scanning electron microscopy (SEM) extended (EDAX), transmission microscopy, ultraviolet-visible DRS spectra for optical properties, photoluminescence (PL) emission behaviours, Fourier transform infrared (FTIR) spectroscopy chemical bonding analysis and photoelectron (XPS) surface composition. XRD confirmed anatase phase all La-TiO2 nanocomposites. UV-Vis showed an increased absorption in visible range a slight red shift binding energy as % La from 1-5 wt.%. Similarly, values varied 3.02 to 2.75 eV doping. These exhibited photocatalytic activity achieving 99% degradation acid blue dye 96% brilliant yellow presence light irradiation. Scavenger studies indicated that was suppressed, suggesting involvement superoxide (O2–), hydroxyl radical (OH•) holes (h+) reaction mechanism.

Language: Английский

Enhanced Photocatalytic Degradation of Cyanide in Mining Wastewater Using a ZnO-BiOI Heterojunction Catalyst DOI Creative Commons
Darlington C. Ashiegbu,

Paballo Pilane,

John Moma

et al.

Surfaces, Journal Year: 2025, Volume and Issue: 8(1), P. 3 - 3

Published: Jan. 5, 2025

The mining industry often relies on the natural degradation of tailings dams to break down cyanide in wastewater. However, this method has drawbacks, including high costs due significant water demand and variable effectiveness dependent environmental conditions, it is a time-consuming process. To address issue, study focused preparing, characterizing, applying ZnO-BiOI heterostructure for removal water. heterojunction was thoroughly characterized using techniques such as SEM-EDX, X-ray diffraction, nitrogen adsorption–desorption isotherms, photoluminescence, XPS scans. photocatalytic efficacy evaluated by degrading CN−-containing solutions across varying photocatalyst masses, temperatures, initial concentrations. results showed that 5 mg completely eliminated 40 ppm 35 min. Increasing catalyst mass 15 significantly reduced time complete cyanide, while 25 achieved optimal temperature found be 50 °C, with occurring 20 min within range °C 70 °C. Moreover, when concentration ranged from 100 ppm, 97% destruction efficiency removing solution These strongly indicate synthesized potential serve an effective efficient process effluents

Language: Английский

Citations

1
Enhancing Photocatalytic Properties of TiO2 Photocatalyst and Heterojunctions: A Comprehensive Review of the Impact of Biphasic Systems in Aerogels and Xerogels Synthesis, Methods, and Mechanisms for Environmental Applications DOI Creative Commons
Lizeth Katherine Tinoco Navarro,

Jaroslav Cihlář

Gels, Journal Year: 2023, Volume and Issue: 9(12), P. 976 - 976

Published: Dec. 13, 2023

This review provides a detailed exploration of titanium dioxide (TiO2) photocatalysts, emphasizing structural phases, heterophase junctions, and their impact on efficiency. Key points include diverse synthesis methods, with focus the sol-gel route variants like low-temperature hydrothermal (LTHT). The delves into influence acid-base donors gelation, dissects crucial drying techniques for TiO2 aerogel or xerogel catalysts, meticulously examines mechanisms underlying photocatalytic activity. It highlights role physicochemical properties in charge diffusion, carrier recombination, scavengers photo-oxidation/reduction. Additionally, doping heterostructures potential enhancing efficiency are briefly discussed, all within context environmental applications.

Language: Английский

Citations

19
A review of environmental functional materials for cyanide removal by adsorption and catalysis DOI
Xiuping Chen, Yuanchuan Ren, Guangfei Qu

et al.

Inorganic Chemistry Communications, Journal Year: 2023, Volume and Issue: 157, P. 111298 - 111298

Published: Aug. 31, 2023

Language: Английский

Citations

18
Innovative Nanomaterial Properties and Applications in Chemistry, Physics, Medicine, or Environment DOI Creative Commons
Thomas Dippong

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(2), P. 145 - 145

Published: Jan. 9, 2024

Developing innovative nanomaterials unlocks new opportunities in physics, chemistry, medicine, and environmental protection [...]

Language: Английский

Citations

5
Chemical, ecotoxicological characteristics, environmental fate, and treatment methods applied to cyanide-containing wastewater DOI Creative Commons
Katherine Vaca-Escobar, David Arregui-Almeida, Patricio J. Espinoza-Montero

et al.

npj Clean Water, Journal Year: 2024, Volume and Issue: 7(1)

Published: Oct. 5, 2024

The main chemical, ecotoxicological, and environmental fate characteristics of cyanide, along with its treatment methods for cyanide-contaminated wastewater, were thoroughly examined. A global biogeochemical cycle cyanide is proposed, covering the key physicochemical processes occurring in aqueous, soil, atmospheric environments. principles, advantages, disadvantages various methods—including physicochemical, electrochemical, photochemical, biological approaches—are evaluated. Finally, feasibility reusing waste explored.

Language: Английский

Citations

5
Heteroanionic Lanthanum Titanium Oxycarbide Photocatalyst: A Prospective Candidate for H2O2 Production and Enhanced Methylene Blue Dye Degradation from Different Water Sources DOI
Yathavan Subramanian, Minh Thang Le,

Muhammed Ali S A

et al.

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141507 - 141507

Published: Jan. 1, 2025

Language: Английский

Citations

0
Synthesis of La-doped TiO2 nanoparticles with enhanced photocatalytic activity DOI
Е. М. Bayan,

Maria Volkova,

M. I. Tolstunov

et al.

Nanotechnology for Environmental Engineering, Journal Year: 2025, Volume and Issue: 10(1)

Published: Feb. 18, 2025

Language: Английский

Citations

0
Structure, photoluminescence, and photocatalytic activity of TiO2@Au/Sm3+ nanocomposites for dyes remediation DOI
О. М. Lavrynenko, M. M. Zahornyi, Erwan Paineau

et al.

Himia Fizika ta Tehnologia Poverhni, Journal Year: 2025, Volume and Issue: 16(1), P. 141 - 148

Published: March 6, 2025

The textile industries produce a lot of toxic dyes and pigments that can absorb reflect sunlight in the water. application heterogeneous photocatalysis for removal these pollutants is effective using metal-oxide-based nanocomposites with noble rare earth metals under different light irradiation. effect dopant concentration on structural, optical, electronic properties TiO2 nanomaterials also important their photocatalytic performance. synthesis TiO2&Au/Sm particles gold content 2 4 wt. % samarium 0.2 was carried out by chemical precipitation TTIP (titanium tetraisopropoxide) solution presence Sm3+ Au3+ cations. primary particle size CSR (coherent scattering region) nanopowders 18–20 nm. It has been shown included composite structure, an increase parameters anatase crystal lattice. structure confirmed EDS PL methods. obtained structures have high sorption activity to cationic (Methylene Blue Rhodamine B), lower – anionic ones, particular, Orange G. influence UV irradiation, solutions undergo decolorization, which accompanied destruction dye molecules, hypsochromic shift characteristic maximum UV-VL spectra. series OG (46.7 %) < MO (89.2 MB (96.0 RhB (98.5 ([Au] = %, [Sm] (22.6 (24.1 (41.5 (98.6 were found according intensity decolorization solutions. difference course process be related PZC (point zero charge) particles, 7.01 9.25 %).

Language: Английский

Citations

0
Investigation of Toxicity Parameters of La-TiO₂ Nanoparticles in Allium cepa L. Root Tip Cells DOI Open Access
Aytül Uzun Akgeyik, Emrah Akgeyik

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Journal Year: 2025, Volume and Issue: 18(1), P. 291 - 311

Published: March 26, 2025

In this study, the dose-dependent physiological, anatomical, and cytogenetic effects of lanthanum-doped titanium dioxide (La-TiO₂) nanoparticles, which are widely used today have applications in electronics, optics, energy storage, photocatalysis, were investigated Allium cepa L. root tip cells. La-TiO₂ NPs synthesized using microwave method, characterization analyses such as SEM XRD performed to ensure desired nanoparticle properties before proceeding vivo parameters. physiological parameters including germination percentage, length, weight increase; indicators chromosomal abnormality (CA), micronucleus (MN) frequency, mitotic index (MI); anatomical on meristematic cell damage examined through sectioning, obtained data statistically evaluated. The onion bulbs test materials divided into five groups: Control (Group I) groups Group II (10 ppm), III (25 IV (50 ppm) V (100 exposed different doses nanoparticles. After a 72-hour application, it was determined that decreased nanoparticles applied dose increased. Additionally, an increase (CA) frequency observed. terms damage, epidermal thickened cortical walls, flattened nuclei, indistinct vascular tissues detected treated with La-TiO₂. As result, demonstrated sizes could cause cytotoxic, genotoxic, A.

Language: Английский

Citations

0
Simultaneous H2 production and water purification with surface-modified nanostructured TiO2 photoelectrodes DOI Creative Commons
Enrica Maria Malannata, Alessandro Auditore, Roberto Fiorenza

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(18), P. 14273 - 14281

Published: Jan. 1, 2025

TiO 2 photoelectrode surface engineering enabled enhanced photo-electrocatalytic water remediation with contextual hydrogen production, highlighting its potential for practical application in sustainable environmental technologies.

Language: Английский

Citations

0