Optical sensing and imaging of pH values: Spectroscopies, materials, and applications

A Steinegger, OS Wolfbeis, SM Borisov - Chemical reviews, 2020 - ACS Publications
This is the first comprehensive review on methods and materials for use in optical sensing of
pH values and on applications of such sensors. The Review starts with an introduction that …

[HTML][HTML] Thermal efficiency enhancement of mono and hybrid nanofluids in solar thermal applications–A review

LA Alshuhail, F Shaik, LS Sundar - Alexandria Engineering Journal, 2023 - Elsevier
Everywhere throughout the world, primarily in all industrial sectors, there is a tremendous
need for energy. The only option to meet the energy demand is via fossil fuels. Global …

[HTML][HTML] Synthesis and characterization of hybrid nanofluids and their usage in different heat exchangers for an improved heat transfer rates: a critical review

LS Sundar - Engineering Science and Technology, an International …, 2023 - Elsevier
The heat exchangers are commonly used in thermal power companies, chemical factories,
petroleum industries, and etc for the purpose of exchange heat from one fluid to another …

[HTML][HTML] Fourier transform infrared and Raman characterization of silica-based materials

LB Capeletti, JH Zimnoch - … spectroscopy to current research in the …, 2016 - intechopen.com
Abstract Fourier Transform Infrared and Raman are powerful techniques to evaluate silica
and hybrid silica structure. It is possible to evaluate the silica network formation along the …

[HTML][HTML] Self-cleaning of SiO2-TiO2 coating: Effect of sonochemical synthetic parameters on the morphological, mechanical, and photocatalytic properties of the films

A Rosales, L Ortiz-Frade, IE Medina-Ramirez… - Ultrasonics …, 2021 - Elsevier
Among the different properties of the hydrophobic semiconductor surfaces, self-cleaning
promoted by solar illumination is probably one of the most attractive from the technological …

Optical fiber sensors based on sol–gel materials: Design, fabrication and application in concrete structures

RB Figueira, JM de Almeida, B Ferreira, L Coelho… - Materials …, 2021 - pubs.rsc.org
Optical fiber sensing systems have been widely developed for several fields such as
biomedical diagnosis, food technology, military and industrial applications and civil …

Influence of Phthalein dyes on structural, optical, and sensing properties of zinc oxide supported Silica-titania nanocomposite

S Islam - Spectrochimica Acta Part A: Molecular and …, 2024 - Elsevier
Owed to rapid responsive pH sensing attributes, the zinc-supported Silica-titania (Z/ST)
nanocomposite is synthesized by the sol-gel method. Three distinct pH dyes such as …

Effect of substrate conductivity on charge transfer and CO2 photoreduction in water vapor over silica-modified TiO2 films

M Fereidooni, O Núñez, V Márquez, CV Paz… - Applied Surface …, 2023 - Elsevier
Photocatalytic CO 2 reduction is gaining popularity due to its ability to reduce accumulated
CO 2 in the atmosphere using a green approach. On a variety of substrates, the …

Fiber optic pH sensor using TiO2-SiO2 composite layer with a temperature cross-sensitivity feature

M Chauhan, VK Singh - Optik, 2020 - Elsevier
An intensity-modulated fiber optic pH sensor is fabricated and demonstrated in the present
work. Three pH indicators, bromothymol blue, cresol red and chlorophenol red along with …

A new silver (I) ions optical sensor based on nanoporous thin films of sol–gel by rose bengal dye

SA Shahamirifard, M Ghaedi, S Hajati - Sensors and Actuators B: Chemical, 2018 - Elsevier
In this work, a new optical sensor was fabricated based on the incorporation of rose bengal
(RB) dye as ionophore into the nanopores of thin film prepared through the sol-gel …