Results 111 to 120 of about 5,891,064 (303)

Doping of commercial TiO2 nanoparticles (UV100) with urea and investigation of their photocatalytic activity in removing an environmental pollutant (C.I. Acid Red 27) under visible light irradiation

آلودگی‌های محیطی و توسعه پایدار شهری
In this study, commercial TiO₂ (UV100) was doped with urea using an impregnation method, and its photocatalytic activity was evaluated under visible light irradiation.
Zahra Mahmoudi
doaj  

Molten salt synthesis of rutile phase Ag/TiO2 nanowires for efficient photoreduction of Cr(VI)

Next Materials
The morphology of TiO2 structures is a critical parameter in photocatalysis. Fabricating rutile phase TiO2 in nanostructures forms is a promising method to increase the surface area of the catalyst, thereby accelerating photocatalytic rates.
Sarah Keiza Ismail, Munawar Khalil, Jeong-Myeong Ha, Rika Tri Yunarti   +3 more
doaj   +1 more source

Photocatalytic Degradation of Polyacrylamide in Oilfield Sewage by Nano-sized TiO2 Doped with W Ion

MATEC Web of Conferences, 2016
The Nano-TiO2 was modified by doping TiO2 nanoparticles with W6+ as catalyst, improving the photocatalytic activity and photocatalytic properties of nanometer TiO2.
Wang Guilong, Zhuo Xingjia, Wang Yue
doaj   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

Advanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen, Wei Zeng, Zherui Zhao, JiYu Zhao, Ziyan Huang, Zhuo Chen, Kui Zhou, Guanglong Ding, Su‐Ting Han, Ye Zhou   +9 more
wiley   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

Advanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Nitrogen-doped titanium dioxide photocatalysts for visible response prepared by using organic compounds

Science and Technology of Advanced Materials, 2005
In order to utilize visible light in photocatalytic reactions, nitrogen atoms were doped in commercially available photocatalytic TiO2 powders by using an organic compound such as urea and guanidine.
Yoshio Nosaka, Masami Matsushita, Junichi Nishino and Atsuko Y. Nosaka
doaj  

Enhancement of Visible-Light Photocatalytic Activity of Mesoporous Au-TiO2 Nanocomposites by Surface Plasmon Resonance

International Journal of Photoenergy, 2012
Mesoporous Au-TiO2 nanocomposite plasmonic photocatalyst with visible-light photoactivity was prepared by a simple spray hydrolytic method using photoreduction technique at 90∘C.
Minghua Zhou, Jun Zhang, Bei Cheng, Huogen Yu   +3 more
doaj   +1 more source

Hydrogen‐Bonding‐Directed Assembly of COF/Nanocluster Hybrids With Synergistic Roles for Efficient Solar Hydrogen Production

Advanced Science, EarlyView.
Hydrogen‐bonding‐directed assembly enables molecular‐level integration of a covalent organic framework and NiZnCo nanoclusters. The engineered interface couples directional charge transfer, multimetal synergy, and photothermal‐assisted catalysis, providing a versatile strategy for efficient noble‐metal‐free solar hydrogen production.
Ailing Pan, De Yan, Anwu Xu, Hong Du, Abulikemu Abudu Rexit, Gang Zhang   +5 more
wiley   +1 more source

Probing Electrocatalyst Design for Product Selectivity in CO2 Reduction

Advanced Science, EarlyView.
Selective CO2 electroreduction is controlled by catalyst structure, dynamic surface reconstruction, adsorbate interactions, and reaction microenvironment. This review summarizes Cu‐ and non‐Cu‐based catalysts, single‐atom and molecular systems, degradation pathways, and operando/computational strategies for steering CO2RR toward hydrocarbons ...
Suvodeep Sen, Bapan Biswas, Apinya Ngoipala, Julia Wiktor, Ujjwal Pal, Shalini Singh   +5 more
wiley   +1 more source

Scalable solvent-free exfoliation of g-C3N4 for dual-function photocatalysis: Water purification and hydrogen evolution under visible light

Next Materials
Herein, a sustainable and scalable planetary ball milling technique was applied for grinding and exfoliation of graphitic carbon nitride (g-C3N4) to enhance its photocatalytic activity.
Saparbek Tugelbay, Zhandos Shalabayev, Fail Sultanov, Abylay Abilkhan, Almagul Mentbayeva, Batukhan Tatykayev   +5 more
doaj   +1 more source