CdTe nanoparticles encapsulation in mesoporous titania-silica nanocomposite for phenol red pH sensing

被引：3

作者：

Alamer, Kawther ^{[1
]}

Islam, Shumaila ^{[2
]}

Alshoaibi, Adil ^{[2
]}

Alnaim, Nisrin ^{[2
]}

Bakhtiar, Hazri ^{[3
]}

机构：

[1] King Faisal Univ, Coll Sci, Dept Chem, POB 400, Al Hasa 31982, Al Hofuf, Saudi Arabia

[2] King Faisal Univ, Coll Sci, Dept Phys, POB 400, Al Hasa 31982, Al Hufuf, Saudi Arabia

[3] Univ Teknol Malaysia, Ibnu Sina Inst Sci & Ind Res, Laser Ctr, Skudai 81310, Johor, Malaysia

来源：

OPTICAL MATERIALS | 2024年 / 148卷

关键词：

Titania -silica nanocomposite; Cadmium telluride nanoparticles; Sol -gel technique; Phenol red sensing; Mesoporosity; OPTICAL-PROPERTIES; SOL; FILMS; MATRIX; DYE;

D O I：

10.1016/j.optmat.2024.114889

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Owing to phenol red (PR) pH sensing, cadmium telluride (CdTe) nanoparticles are encapsulated in titania-silica nanocomposite (CdTe-TSNC) at low temperatures by sol-gel method. Scanning electron microscopy (SEM) revealed the dense and porous colonial nanostructures of CdTe-TSNC. Atomic force microscopy (AFM) possessed an average surface roughness of around 4 nm and a thickness 25 nm for TSNC (titania-silica nanocomposite) which reduced to 1 nm and 4 nm, respectively, after CdTe encapsulation. Thermally stable CdTe-TSNC possessed a large surface area 411 m2/g, transmittance 77 %, and refractive index 1.4 at 550 nm. The PR/CdTe-TSNC (PR immobilized CdTe-TSNC) exhibited large pKa 9.4 with fast time response 0.21 s in pH 12 without leaching.

引用

页数：11

共 50 条

[21] Numerical Simulation of the Synthesis of Titania-Silica Composite Nanoparticles in Plasmachemical Reactor
Aul'chenko, Sergey
Kartaev, Evgeniy
INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH (ICMAR 2018), 2018, 2027
[22] Synthesis, Characterization and Catalytic Evaluation of Chromium Oxide Deposited on Titania-Silica Mesoporous Nanocomposite for the Ethane Dehydrogenation with CO2
Al-Awadi, Abdulrhman S.
El-Toni, Ahmed Mohamed
Al-Zahrani, Saeed M.
Abasaeed, Ahmed E.
Khan, Aslam
CRYSTALS, 2020, 10 (04)
[23] Au and AuCu Nanoparticles Supported on SBA-15 Ordered Mesoporous Titania-Silica as Catalysts for Methylene Blue Photodegradation
Barroso-Martin, Isabel
Moretti, Elisa
Talon, Aldo
Storaro, Loretta
Rodriguez-Castellon, Enrique
Infantes-Molina, Antonia
MATERIALS, 2018, 11 (06)
[24] Novel Mesoporous Titania-Silica Aerogels Highly Active for the Selective Epoxidation of Cyclic Olefins
J Chem Soc Chem Commun, 2 (163):
[25] One-step synthesis of mesoporous hybrid titania-silica xerogels for the epoxidation of alkenes
Lorret, Olivier
Lafond, Vincent
Mutin, P. Hubert
Vioux, Andre
CHEMISTRY OF MATERIALS, 2006, 18 (20) : 4707 - 4709
[26] Raspberry like creosol red functionalized zincite supported silica-titania nanocomposite: Correlation of structural, optical, and pH sensing properties
Islam, Shumaila
Alshoaibi, Adil
Materials Research Bulletin, 2022, 155
[27] Raspberry like creosol red functionalized zincite supported silica-titania nanocomposite: Correlation of structural, optical, and pH sensing properties
Islam, Shumaila
Alshoaibi, Adil
MATERIALS RESEARCH BULLETIN, 2022, 155
[28] pH and temperature dual-responsive hollow mesoporous silica nanoparticles for drug encapsulation and delivery
Wu, Shu
Wang, Chen
Chen, Xia
Bai, Lu
Wu, Qiuhua
Zhang, Guolin
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, 2024,
[29] Control of silica shell thickness and microporosity of titania-silica core-shell type nanoparticles to depress the photocatalytic activity of titania
El-Toni, Ahmed Mohamed
Yin, Shu
Sato, Tsugio
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 300 (01) : 123 - 130
[30] Two step synthesis of a mesoporous titania-silica composite from titanium oxychloride and sodium silicate
Shao, Godlisten N.
Elineema, Gideon
Quang, Dang Viet
Kim, You Na
Shim, Young Ho
Hilonga, Askwar
Kim, Jong-Kil
Kim, Hee Taik
POWDER TECHNOLOGY, 2012, 217 : 489 - 496

← 1 2 3 4 5 →