One-pot synthesis of platinum3cobalt nanoflowers with enhanced oxygen reduction and methanol oxidation

Zheng, Jie-Ning; He, Linghao; Chen, Chen; Wang, Ai‐Jun; Ma, Ke; Feng, Jiu‐Ju

doi:10.1016/j.jpowsour.2014.06.109

Cited by 96 publications

(61 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3d, the onset of CO stripping on CoPt TONPs (0.44 V) is lower than that on CoPt ANPs and standard commercial Pt/C, which are 0.50 and 0.54 V, respectively. Meanwhile, the corresponding CO oxidation peak of CoPt TONPs, CoPt ANPs and commercial Pt/C are also positively shifted from 0.50 to 0.61 V. These results suggest that the CoPt TONPs have the efficient CO removal ability, which might arise mainly from the optimum geometric, ligand effect between Co and Pt, which alters the electronic structure of Pt [26,44].…”

Section: Magnetic Measurementsmentioning

confidence: 81%

“…The selected-area electron diffraction pattern (SAED, shown in Fig. 1c) shows concentric rings with the index of (111), (200), (220), (311) and (222) [26,27]. The existence of shake up peaks of Co 2p is also caused by Co x+ 2p1/2.…”

Section: Magnetic Measurementsmentioning

confidence: 97%

“…3b, the MOR curves have two well-separated peaks: the anodic peaks in the forward and backward scans. During the forward scan, the current density increases with increasing potential but then decreases with further increasing of potential, resulting in an obvious peak at around 0.7 V, which is attributed to the amount of methanol oxidized at the electrode surface [26,39]. When the scan is backward, the oxidation peak at about 0.45 V is generated due to the oxidization of the residual carbon species [40].…”

Section: Magnetic Measurementsmentioning

confidence: 99%

“…These results indicate that CoPt TONPs enhance long-term catalytic stability for MOR. The stable catalytic activity of CoPt TONPs indicates the improved ability to prevent CO poisoning, which can be attributed to the strong electron interaction between Co and Pt atoms in CoPt TONPs [26].…”

Section: Magnetic Measurementsmentioning

confidence: 99%

See 3 more Smart Citations

Nanomagnetic CoPt truncated octahedrons: facile synthesis, superior electrocatalytic activity and stability for methanol oxidation

et al. 2016

View full text Add to dashboard Cite

Nanomagnetic CoPt truncated octahedral nanoparticles (TONPs) were successfully synthesised through a facile one-pot strategy. These single crystal CoPt TONPs with an average size of about 8 nm exhibit excellent electrocatalytic performance of both activity and stability for methanol oxidation reaction (MOR). The mass and specific activities of CoPt TONPs is 8 and 6 times higher than that of standard commercial Pt/C, respectively. After accelerated durability test (ADT), the loss of electrochemical surface area (ECSA) for CoPt TONPs is only 18.5%, which is significantly less than that of commercial Pt/C (68.2%), indicating that CoPt TONPs possess much better stability than commercial Pt/C in the prolonged operation. The Curie temperature of CoPt TONPs down to 8 nm is as high as 350 K with weak ferromagntism at room temperature (RT), which is greatly valuable for recycling in the eletrocatalytic applications.

show abstract

Section: Magnetic Measurementsmentioning

confidence: 81%

Section: Magnetic Measurementsmentioning

confidence: 97%

Section: Magnetic Measurementsmentioning

confidence: 99%

Section: Magnetic Measurementsmentioning

confidence: 99%

See 2 more Smart Citations

Nanomagnetic CoPt truncated octahedrons: facile synthesis, superior electrocatalytic activity and stability for methanol oxidation

et al. 2016

View full text Add to dashboard Cite

show abstract

“…[14] More importantly, high cost and scarce resources of Pt severely limit its commercial applications in DMFCs. [15][16][17] In order to solve the aforementioned problems, there are many effective ways proposed, such as the synthesis of nano-sized Pt particles and the application of effective support with high surface area to guarantee high dispersion of Pt nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrocatalytic Activity of Dual Template Based Pt/Cu‐zeolite A/Graphene for Methanol Electrooxidation

Wang

et al. 2017

Chin. J. Chem.

View full text Add to dashboard Cite

Cite this paper: Wang, S.; He, P.; He, M.; Dong, F.; Liu, H.; Lei, H.;Zhang, X.; He, S. Chin. J. Chem. 2018, 36, 37- ABSTRACT A novel Pt/Cu-zeolite A/graphene based electrocatalyst was successfully prepared by chemical reduction method for methanol electrooxidation. Graphite oxide and Cu functionalized zeolite A were simultaneously reduced by NaBH 4 to prepare Cu-zeolite A/graphene support which was used to deposit Pt nanoparticles. The nanostructure and composition of as-prepared Pt/Cu-zeolite A/graphene composites were characterized by X-ray diffractometer, X-ray fluorescence, Fourier transform infrared spectrometer and scanning electron microscopy. The electrocatalytic properties of Pt/Cu-zeolite A/graphene modified electrode for methanol oxidation were investigated by cyclic voltammetry and chronoamperometry in 0.10 mol/L H 2 SO 4 ＋0.50 mol/L CH 3 OH solution. Compared with Pt/zeolite A/graphene electrode and Pt/graphene electrode, Pt/Cu-zeolite A/graphene based electrode exhibited obviously enhanced current and higher electrocatalytic activity for methanol electrooxidation. The increased electrocatalytic activity was attributed to the presence of zeolite A and reduced graphene oxide based dual template, which significantly increased the effective electrode surface and facilitated the diffusion of analytes into the electroactive catalyst.

show abstract

Recent advancements in enzyme‐incorporated nanomaterials: Synthesis, mechanistic formation, and applications

Anboo

Lau

Kansedo

et al. 2022

Biotech & Bioengineering

View full text Add to dashboard Cite

Over the past decade, nanotechnology has been developed and employed across various entities. Among the numerous nanostructured material types, enzymeincorporated nanomaterials have shown great potential in various fields, as an alternative to biologically derived as well as synthetically developed hybrid structures. The mechanism of incorporating enzyme onto a nanostructure depends on several factors including the method of immobilization, type of nanomaterial, as well as operational and environmental conditions. The prospects of enzymeincorporated nanomaterials have shown promising results across various applications, such as biocatalysts, biosensors, drug therapy, and wastewater treatment. This is due to their excellent ability to exhibit chemical and physical properties such as high surface-to-volume ratio, recovery and/or reusability rates, sensitivity, response scale, and stable catalytic activity across wide operating conditions. In this review, the evolution of enzyme-incorporated nanomaterials along with their impact on our society due to its state-of-the-art properties, and its significance across different industrial applications are discussed. In addition, the weakness and future prospects of enzyme-incorporated nanomaterials were also discussed to guide scientists for futuristic research and development in this field.

show abstract

One-pot synthesis of platinum3cobalt nanoflowers with enhanced oxygen reduction and methanol oxidation

Cited by 96 publications

References 65 publications

Nanomagnetic CoPt truncated octahedrons: facile synthesis, superior electrocatalytic activity and stability for methanol oxidation

Nanomagnetic CoPt truncated octahedrons: facile synthesis, superior electrocatalytic activity and stability for methanol oxidation

Enhanced Electrocatalytic Activity of Dual Template Based Pt/Cu‐zeolite A/Graphene for Methanol Electrooxidation

Recent advancements in enzyme‐incorporated nanomaterials: Synthesis, mechanistic formation, and applications

Contact Info

Product

Resources

About