Results 51 to 60 of about 39,355 (307)

Photothermal catalysis: Recycling polymer to monomer with carbon quantum dots

, 2023
Plastic recycling strategies to combat rapidly increasing waste build-up are of utmost environmental importance. Because of inherent limitations to mechanical recycling, chemical recycling to monomer has emerged as a powerful alternative that enables ...
Liat, Kugelmass, Erin, Stache
core   +1 more source

Nanocomposites of Carbon Quantum Dots and Graphene Quantum Dots: Environmental Applications as Sensors

Chemosensors, 2022
Carbon-based quantum dots and their nanocomposites have sparked immense interest for researchers as sensors due to their attractive physico-chemical properties caused by edge effects and quantum confinement.
Ajaypal Kaur, Komal Pandey, Ramandeep Kaur, Nisha Vashishat, Manpreet Kaur   +4 more
doaj   +1 more source

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Advanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma   +3 more
wiley   +1 more source

Growth of single-wall carbon nanotubes by chemical vapor deposition for electrical devices [PDF]

, 2006
Carbon emerges in di®erent forms. Diamond and graphite have been well known mate- rials for centuries. Moreover fullerenes and nanotubes were discovered only a few years ago. H. W. Kroto et al. depicted the fullerenes in 1985 [1]. A few years later, in
Furer, Jürg
core   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

Detection of ferric ions by nitrogen and sulfur co-doped potato-derived carbon quantum dots as a fluorescent probe

Materials Research Express
This paper reports the detection of ferric ions (Fe ^3+ ) based on nitrogen and sulfur co-doped carbon quantum dots. These nitrogen and sulfur co-doped carbon quantum dots were synthesized via a hydrothermal route using northern Shaanxi potatoes as ...
Miao Mu, Zhenzhen Duan, Shanshan Fan, Wei Zhao, Wenwen Gao, Rui Bai, Yanjun Li, Yuhong Kang   +7 more
doaj   +1 more source

Lychee-like SnO2 hollow microspheres sensitized by carbon quantum dots for high-sensitivity ethanol sensor

Sensors and Actuators Reports, 2023
In this work, the application of carbon quantum dots as known as CQDs for ethanol detection is pioneered, and a multi-fold improvement in gas sensor performance is achieved through the unique electron transport mechanism of carbon quantum dots.
Zhenyu Yuan, Yongchen Sui, Meige Ding, Hongmin Zhu   +3 more
doaj   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

Clustering of carbon quantum dots from polysaccharides (Cellulose, Alginate, Chitosan) versus heterocyclic compounds: Synthesis, characterization and medical applications

Carbohydrate Polymer Technologies and Applications
Carbon quantum dots are special class of carbon nanostructures with spherical size of one to ten nanometers. Synthesis techniques of carbon quantum dots are diverse from top-down to bottom-up techniques but most of them are complicated, energy consuming,
Hanan B. Ahmed, Mary M. Mikhail, Mahmoud El-Shahat, Hossam E. Emam   +3 more
doaj   +1 more source

Carbon Nanodots as Peroxidase Nanozymes for Biosensing

Molecules, 2016
‘Nanozymes’, a term coined by Scrimin, Pasquato, and co-workers to describe nanomaterials with enzyme-like characteristics, represent an exciting and emerging research area in the field of artificial enzymes.
Bhaskar Garg, Tanuja Bisht
doaj   +1 more source