Seeded Synthesis of Monodisperse Core-Shell and Hollow Carbon Spheres

Small ◽  
2016 ◽  
Vol 12 (32) ◽  
pp. 4357-4362 ◽  
Author(s):  
Luz Karime Gil-Herrera ◽  
Álvaro Blanco ◽  
Beatriz H. Juárez ◽  
Cefe López
Keyword(s):  
Core Shell ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Nitrogen-doped hollow carbon spheres with a wrinkled surface: their one-pot carbonization synthesis and supercapacitor properties

2016 ◽  
Vol 52 (78) ◽  
pp. 11693-11696 ◽  
Author(s):  
Lei Liu ◽  
Shi-Da Xu ◽  
Qing Yu ◽  
Feng-Yun Wang ◽  
Hui-Ling Zhu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Core Shell ◽  
Carbon Spheres ◽  
Melamine Formaldehyde ◽  
One Pot ◽  
Nitrogen Doped ◽  
Wrinkled Surface ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Nitrogen-doped hollow carbon spheres with a wrinkled surface were synthesized through direct pyrolysis of core–shell structured graphene oxide–resol@melamine formaldehyde composites.

The synthesis of a core–shell MnO2/3D-ordered hollow carbon sphere composite and its superior electrochemical capability for lithium ion batteries

2014 ◽  
Vol 2 (18) ◽  
pp. 6343-6347 ◽  
Author(s):  
Zang Jun ◽  
Chen Jia-jia ◽  
Zhang Cheng-long ◽  
Qian Hang ◽  
Zheng Ming-sen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Carbon Matrix ◽  
Core Shell ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Hollow Carbon Sphere ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

A hierarchical core–shell MnO2/3D-ordered hollow carbon sphere composite was designed and synthesized by using hollow carbon spheres (HCS) as a carbon matrix.

scholarly journals Acetylcholinesterase Biosensor Based On Mesoporous Hollow Carbon Spheres/Core-Shell Magnetic Nanoparticles-Modified Electrode for the Detection of Organophosphorus Pesticides

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4429 ◽  
Author(s):  
Ruiping Luo ◽  
Zijie Feng ◽  
Guannan Shen ◽  
Yi Xiu ◽  
Yukun Zhou ◽  
...  
Keyword(s):  
Detection Limit ◽  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Incubation Time ◽  
Core Shell ◽  
Carbon Electrode ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

The present study investigated the synthesis of mesoporous hollow carbon spheres (MHCS) and magnetic mesoporous hollow carbon spheres with core-shell structures (Fe3O4@MHCS). Two acetylcholinesterase sensors (acetylcholinesterase/mesoporous hollow carbon spheres/glassy carbon electrode (AChE/MHCS/GCE) and acetylcholinesterase/core-shell magnetic mesoporous hollow carbon spheres/glassy carbon electrode (AChE/Fe3O4@MHCS/GCE) based on mesoporous carbon materials were prepared. Under the optimum conditions, using Malathion as the model compound, the developed biosensors showed a wide detection range, low detection limit, good reproducibility, and high stability. The AChE/MHCS/GCE electrochemical sensor response exhibited two good linear ranges at the incubation time of 10 min at the Malathion concentration ranges of 0.01 to 100 ppb and 100 to 600 ppb, with a detection limit of 0.0148 ppb (S/N = 3). The AChE/Fe3O4@MHCS/GCE electrochemical sensor that was operated with an incubation time of 12 min at the malathion concentration ranges between 0.01–50 ppb and 50–600 ppb had a detection limit of 0.0182 ppb (S/N = 3). Moreover, the AChE/MHCS/GCE and AChE/Fe3O4@MHCS/GCE biosensors were effective for the detection of real samples, and were demonstrated to be suitable for the field-testing of organophosphorus pesticide (OP) residues.

Ag–Au nanoparticles encapsulated inside porous hollow carbon nanospheres: a molecular dynamics study

2018 ◽  
Vol 42 (16) ◽  
pp. 13619-13628 ◽  
Author(s):  
Hamed Akbarzadeh ◽  
Mohsen Abbaspour ◽  
Esmat Mehrjouei ◽  
Samira Ramezanzadeh
Keyword(s):  
Molecular Dynamics ◽  
Au Nanoparticles ◽  
Core Shell ◽  
Hollow Core ◽  
Carbon Spheres ◽  
Carbon Nanospheres ◽  
Au Nanoclusters ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

We have simulated bare Ag/Au nanoclusters and Ag/Au nanoclusters encapsulated into hollow carbon spheres (AgAu@C) with various structures (core–shell, hollow core–shell, rattle core–shell, and alloy nanoclusters) from 300 to 700 K.

Carbon Spheres: Seeded Synthesis of Monodisperse Core-Shell and Hollow Carbon Spheres (Small 32/2016)

Small ◽  
2016 ◽  
Vol 12 (32) ◽  
pp. 4301-4301
Author(s):  
Luz Karime Gil-Herrera ◽  
Álvaro Blanco ◽  
Beatriz H. Juárez ◽  
Cefe López
Keyword(s):  
Core Shell ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Enhanced catalytic activity of low-Pt content nanocatalysts supported on hollow carbon spheres for the ORR in alkaline media

MRS Advances ◽  
2020 ◽  
Vol 5 (57-58) ◽  
pp. 2961-2972
Author(s):  
P.C. Meléndez-González ◽  
E. Garza-Duran ◽  
J.C. Martínez-Loyola ◽  
P. Quintana-Owen ◽  
I.L. Alonso-Lemus ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Anion Exchange ◽  
Average Particle Size ◽  
Synthesis Method ◽  
Alkaline Media ◽  
High Catalytic Activity ◽  
Average Particle ◽  
Carbon Spheres ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

In this work, low-Pt content nanocatalysts (≈ 5 wt. %) supported on Hollow Carbon Spheres (HCS) were synthesized by two routes: i) colloidal conventional polyol, and ii) surfactant-free Bromide Anion Exchange (BAE). The nanocatalysts were labelled as Pt/HCS-P and Pt/HCS-B for polyol and BAE, respectively. The physicochemical characterization of the nanocatalysts showed that by following both methods, a good control of chemical composition was achieved, obtaining in addition well dispersed nanoparticles of less than 3 nm TEM average particle size (d) on the HCS. Pt/HCS-B contained more Pt0 species than Pt/HCS-P, an effect of the synthesis method. In addition, the structure of the HCS remains more ordered after BAE synthesis, compared to polyol. Regarding the catalytic activity for the Oxygen Reduction Reaction (ORR) in 0.5 M KOH, Pt/HCS-P and Pt/HCS-B showed a similar performance in terms of current density (j) at 0.9 V vs. RHE than the benchmark commercial 20 wt. % Pt/C. However, Pt/HCS-P and Pt/HCS-B demonstrated a 6 and 5-fold increase in mass catalytic activity compared to Pt/C, respectively. A positive effect of the high specific surface area of the HCS and its interactions with metal nanoparticles and electrolyte, which promoted the mass transfer, increased the performance of Pt/HCS-P and Pt/HCS-B. The high catalytic activity showed by Pt/HCS-B and Pt/HCS-P for the ORR, even with a low-Pt content, make them promising cathode nanocatalysts for Anion Exchange Membrane Fuel Cells (AEMFC).

N-doped hierarchical porous hollow carbon spheres with multi-cavities for high performance Na-ion storage

2021 ◽  
Vol 506 ◽  
pp. 230170
Author(s):  
Lantao Liu ◽  
Xiangyu Sun ◽  
Yue Dong ◽  
Dengke Wang ◽  
Zheng Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Carbon Spheres ◽  
Hierarchical Porous ◽  
Ion Storage ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres
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