scholarly journals Metal free and efficient photoelectrocatalytic removal of organic contaminants over g-C3N4 nanosheet films decorated with carbon quantum dots

RSC Advances ◽  
2017 ◽  
Vol 7 (89) ◽  
pp. 56335-56343 ◽  
Author(s):  
Zisheng Zhang ◽  
Shuanglong Lin ◽  
Xingang Li ◽  
Hong Li ◽  
Wenquan Cui
Keyword(s):  
Quantum Dots ◽  
Self Assembly ◽  
Organic Contaminants ◽  
Carbon Quantum Dots ◽  
Ultrasonic Dispersion ◽  
Composite Photocatalyst ◽  
Metal Free ◽  
Assembly Method ◽  
Semiconductor Photocatalyst

As a typical metal-free semiconductor photocatalyst, a composite photocatalyst comprised of g-C3N4 nanosheets decorated with carbon quantum dots (CQDs/g-C3N4) was synthesized via a simple ultrasonic dispersion self-assembly method.

Fluorescent hybrid nanospheres induced by single-stranded DNA and magnetic carbon quantum dots

2019 ◽  
Vol 43 (12) ◽  
pp. 4965-4974 ◽  
Author(s):  
Ling Wang ◽  
Guangzhen Wang ◽  
Yitong Wang ◽  
Huizhong Liu ◽  
Shuli Dong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Self Assembly ◽  
Building Blocks ◽  
Carbon Quantum Dots ◽  
Single Stranded Dna ◽  
Magnetic Carbon

Assembled DNA nanospheres were preparedviaself-assembly with magnetic CQDGd as the building blocks and negatively charged ssDNA as the assembly units.

3D carbon quantum dots/graphene aerogel as a metal-free catalyst for enhanced photosensitization efficiency

2018 ◽  
Vol 233 ◽  
pp. 11-18 ◽  
Author(s):  
Ru Wang ◽  
Kang-Qiang Lu ◽  
Fan Zhang ◽  
Zi-Rong Tang ◽  
Yi-Jun Xu
Keyword(s):  
Quantum Dots ◽  
Carbon Quantum Dots ◽  
Graphene Aerogel ◽  
Metal Free

Synthesis of luminescent 3D microstructures formed by carbon quantum dots and their self-assembly properties

2014 ◽  
Vol 50 (50) ◽  
pp. 6592-6595 ◽  
Author(s):  
D. Mazzier ◽  
M. Favaro ◽  
S. Agnoli ◽  
S. Silvestrini ◽  
G. Granozzi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Self Assembly ◽  
Carbon Quantum Dots ◽  
Emission Properties ◽  
Self Assembling ◽  
Characteristic Emission

Novel star shaped carbon quantum dots–(poly-γ-benzyl-l-glutamate) conjugates displayed a self-assembling propensity to generate spherical microstructures that retain the characteristic emission properties of the native dots.

Carbon Quantum Dots Derived N-Doped Porous Carbon Frameworks with High Electrocatalytic for Oxygen Reduction Reaction

NANO ◽  
2017 ◽  
Vol 12 (08) ◽  
pp. 1750093 ◽  
Author(s):  
Xuelian Li ◽  
Xuming Xue ◽  
Yongsheng Fu
Keyword(s):  
Quantum Dots ◽  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Carbon Quantum Dots ◽  
Reduction Reaction ◽  
Alkaline Electrolyte ◽  
Metal Free ◽  
Defect Sites

Developing low-cost, high-performance metal-free oxygen reduction reaction (ORR) catalysts for fuel cells is highly desirable but still full of challenges. In this study, nitrogen-doped three-dimensional (3D) porous carbon frameworks (NCFs) derived from zero-dimensional carbon quantum dots have been prepared by a simple one-step self-assembly technique. The resultant NCF-800 (carbonized at 800[Formula: see text]C) possesses unique 3D porous framework architecture, large specific surface area (171[Formula: see text]cm2 g[Formula: see text] and abundant defect sites. As a catalyst for ORR, the optimized NCF-800 displays a positive onset potential at 0.87[Formula: see text]V (versus reversible hydrogen electrode), which is roughly 60[Formula: see text]mV more negative than that of Pt/C (0.93[Formula: see text]V). Additionally, the NCF-800 exhibits long-term stability and strong endurance to methanol in alkaline electrolyte, which is much superior to those of Pt/C. Considering the outstanding activity of NCF-800, it can be worked as a prospective metal-free ORR catalyst for fuel cells in the future.

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