Influence of Surface States on the Optical and Cellular Property of Thermally Stable Red Emissive Graphitic Carbon Dots

2021 ◽  
Author(s):  
Barkha Singh ◽  
Rohan Bahadur ◽  
Misah Rangara ◽  
Mayuri N. Gandhi ◽  
Rohit Srivastava
Keyword(s):  
Carbon Dots ◽  
Surface States ◽  
Graphitic Carbon ◽  
Thermally Stable ◽  
Cellular Property

Self-assembly of g-C3N4-based 3D aerogel induced by N-modified carbon dots for enhanced photocatalytic hydrogen production

2021 ◽  
Author(s):  
Pu Xiao-Long ◽  
yang xuechun ◽  
Shan-Shan Liang ◽  
Wenzhong Wang ◽  
Jing-Tai Zhao ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Self Assembly ◽  
Carbon Dots ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Cross Linking ◽  
Photocatalytic Hydrogen Production

The N-modified carbon dots/graphitic carbon nitride (NCDs/g-C3N4) aerogel was successfully prepared by simple electrostatic self-assembly of NCDs and g-C3N4 nanosheets without any harmful solvents or cross-linking agents. The prepared aerogel...

Nature of Absorption Bands in Oxygen-Functionalized Graphitic Carbon Dots

2015 ◽  
Vol 119 (23) ◽  
pp. 13369-13373 ◽  
Author(s):  
Mária Sudolská ◽  
Matúš Dubecký ◽  
Sunandan Sarkar ◽  
Claas J. Reckmeier ◽  
Radek Zbořil ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Graphitic Carbon ◽  
Absorption Bands

Surface states engineering carbon dots as multi-band light active sensitizers for ZnO nanowire array photoanode to boost solar water splitting

Carbon ◽  
2017 ◽  
Vol 121 ◽  
pp. 201-208 ◽  
Author(s):  
Xiaoyong Xu ◽  
Zhijia Bao ◽  
Wenshuai Tang ◽  
Haiyan Wu ◽  
Jing Pan ◽  
...  
Keyword(s):  
Water Splitting ◽  
Carbon Dots ◽  
Nanowire Array ◽  
Surface States ◽  
Zno Nanowire ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Multi Band

Facile and Purification-Free Synthesis of Nitrogenated Amphiphilic Graphitic Carbon Dots

2016 ◽  
Vol 28 (5) ◽  
pp. 1481-1488 ◽  
Author(s):  
Byung Joon Moon ◽  
Yelin Oh ◽  
Dong Heon Shin ◽  
Sang Jin Kim ◽  
Sang Hyun Lee ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Graphitic Carbon

Synthesis of nitrogen-doping carbon dots with different photoluminescence properties by controlling the surface states

Nanoscale ◽  
2016 ◽  
Vol 8 (12) ◽  
pp. 6770-6776 ◽  
Author(s):  
Yun Huan Yuan ◽  
Ze Xi Liu ◽  
Rong Sheng Li ◽  
Hong Yan Zou ◽  
Min Lin ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Nitrogen Doping ◽  
Surface States ◽  
Photoluminescence Properties ◽  
Hydrothermal Route

We used a simple hydrothermal route to obtain EDE N-CDs or EIE N-CDs. The fluorescence of the as-prepared CDs could be quenched by cellular Hg2+ owing to the electrons transfer from CDs to Hg2+.

scholarly journals Dynamic Modification of Fermi Energy in Single-Layer Graphene by Photoinduced Electron Transfer from Carbon Dots

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 528 ◽  
Author(s):  
Angelo Armano ◽  
Gianpiero Buscarino ◽  
Fabrizio Messina ◽  
Alice Sciortino ◽  
Marco Cannas ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Fermi Energy ◽  
Carbon Dots ◽  
Mutual Influence ◽  
Solid Phase ◽  
Surface States ◽  
Single Layer ◽  
Single Layer Graphene ◽  
N Doping ◽  
Carbon Based Nanomaterials

Graphene (Gr)—a single layer of two-dimensional sp2 carbon atoms—and Carbon Dots (CDs)—a novel class of carbon nanoparticles—are two outstanding nanomaterials, renowned for their peculiar properties: Gr for its excellent charge-transport, and CDs for their impressive emission properties. Such features, coupled with a strong sensitivity to the environment, originate the interest in bringing together these two nanomaterials in order to combine their complementary properties. In this work, the investigation of a solid-phase composite of CDs deposited on Gr is reported. The CD emission efficiency is reduced by the contact of Gr. At the same time, the Raman analysis of Gr demonstrates the increase of Fermi energy when it is in contact with CDs under certain conditions. The interaction between CDs and Gr is modeled in terms of an electron-transfer from photoexcited CDs to Gr, wherein an electron is first transferred from the carbon core to the surface states of CDs, and from there to Gr. There, the accumulated electrons determine a dynamical n-doping effect modulated by photoexcitation. The CD–graphene interaction unveiled herein is a step forward in the understanding of the mutual influence between carbon-based nanomaterials, with potential prospects in light conversion applications.

scholarly journals Time-resolved spectroscopy of the ensembled photoluminescence of nitrogen- and boron/nitrogen-doped carbon dots

2018 ◽  
Vol 20 (17) ◽  
pp. 11673-11681 ◽  
Author(s):  
Sunghu Kim ◽  
Byung-Kuk Yoo ◽  
Yuri Choi ◽  
Byeong-Su Kim ◽  
Oh-Hoon Kwon
Keyword(s):  
Exponential Decay ◽  
Carbon Dots ◽  
Surface States ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Nitrogen Doped ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
Boron Nitrogen ◽  
Exponential Fit

The non-exponential decay of the photoluminescence of carbon dots are analyzed using stretched exponential fit functions to reflect the heterogeneity in their luminescent surface states.

Sign in / Sign up

Export Citation Format

Share Document