Carbon quantum dots/SnO2–Co3O4 composite for highly efficient electrochemical water oxidation

Zhao, Shunyan; Li, Chuanxi; Liu, Juan; Liu, Naiyun; Qiao, Shi Zhang; Han, Yuzhi; Huang, Hui; Liu, Yang

doi:10.1016/j.carbon.2015.03.002

Cited by 117 publications

(30 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various functional groups on the CQDs surfaces as the interactive components makes the composites generation possible and enhances the catalytic actions of the original substances. 122 Hence, due to these mentioned remarkable properties, utilizing GQDs and CQDs on the modied electrode for electrochemical sensors/biosensors has been considered as an encouraging options.…”

Section: Applications Of Cqds and Gqdsmentioning

confidence: 99%

Carbon and graphene quantum dots: a review on syntheses, characterization, biological and sensing applications for neurotransmitter determination

et al. 2020

View full text Add to dashboard Cite

show abstract

Section: Applications Of Cqds and Gqdsmentioning

confidence: 99%

Carbon and graphene quantum dots: a review on syntheses, characterization, biological and sensing applications for neurotransmitter determination

et al. 2020

View full text Add to dashboard Cite

show abstract

“…However, typically, the p type Co 3 O 4 semiconductor cannot be used on overall water splitting [23]. Some studies researched on changing the band gap of Co 3 O 4 ; nevertheless, the constraints of these methods are high cost and difficult controlling processes [12,13,14,15,16,17,24]. Therefore, a new p-Co 3 O 4 /n-TiO 2 photococatalyst is designed for overall pure water splitting under visible light irradiation, and the Co 3 O 4 and TiO 2 nanoparticles is, to the best of our knowledge, combined in nano-scale for the first time [25,26,27].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of p-Co3O4/n-TiO2 Nanoparticles for Overall Water Splitting under Visible Light Irradiation

et al. 2016

View full text Add to dashboard Cite

p-Co3O4/n-TiO2 nanoparticles (~400 nm) for photocatalysis were prepared via carbon assisted method and sol-gel method in this work. The paper also studied the application of visible light illuminated p-Co3O4/n-TiO2 nanocomposites cocatalyst to the overall pure water splitting into H2 and O2. In addition, the H2 evolution rate of the p-Co3O4/n-TiO2 nanocomposites is 25% higher than that of the pure Co3O4 nanoparticles. Besides, according to the results of the characterizations, the scheme of visible light photocatalytic water splitting is proposed, the Co3O4 of the nanocomposites is excited by visible light, and the photo-generated electrons and holes existing on the conduction band of Co3O4 and valence band of TiO2 have endowed the photocatalytic evolution of H2 and O2 with higher efficiency. The optimal evolution rate of H2 and O2 is 8.16 μmol/h·g and 4.0 μmol/h·g, respectively.

show abstract

“…Later, they used the Co 9 S 8 /CD@NSC catalyst for zinc/air battery with low charge/discharge voltage gap of 0.62 V and great cycling stability of over 125 h at 10 mA cm −2 . Zhao et al prepared CQD/SnO 2 -Co 3 O 4 composite for highly efficient electrochemical water oxidation [47]. Their experimental results showed that the Co atoms were considered as the active center, the nano sized SnO 2 enhanced electronic conductivity and the insoluble CQDs layer on the surface effectively protected the catalyst.…”

Section: Cnd/cqd Supported Metallic and Nonmetallic Nanoparticlesmentioning

confidence: 99%

Contribution of Carbon Dot Nanoparticles in Electrocatalysis: Development in Energy Conversion Process

Jana

Ngo

Chung

et al. 2020

J. Electrochem. Sci. Technol

View full text Add to dashboard Cite

Modern electrochemical energy devices involve generation and reduction of fuel gases through electrochemical reactions of water splitting, alcohol oxidation, oxygen reduction, etc. Initially, these processes were executed in the presence of noble metal-based catalyst that showed low overpotential and high current density. However, its high cost, unavailability, corrosion and related toxicity limited its application. The search for alternative with high stability, durability, and efficiency led scientists towards carbon nanoparticles supported catalysts which has high surface area, good electrical conductivity, tunable morphology, low cost, ease of synthesis and stability. Carbon nanoparticles are classified into two groups based on morphology, one and zero dimensional particles. Carbon nanoparticles at zero dimension, denoted as carbon dots, are less used carbon support compared to other forms. However, recently carbon dots with improved electronic properties have become popular as catalyst as well as catalyst support. This review focused on the recent advances in electrocatalytic activities of carbon dots. The mechanisms of common electrocatalytic reactions and the role of the catalysts are also discussed. The review also proposed future developments and other research directions to overcome current limitations.

show abstract

Carbon quantum dots/SnO2–Co3O4 composite for highly efficient electrochemical water oxidation

Cited by 117 publications

References 44 publications

Carbon and graphene quantum dots: a review on syntheses, characterization, biological and sensing applications for neurotransmitter determination

Carbon and graphene quantum dots: a review on syntheses, characterization, biological and sensing applications for neurotransmitter determination

Synthesis of p-Co3O4/n-TiO2 Nanoparticles for Overall Water Splitting under Visible Light Irradiation

Contribution of Carbon Dot Nanoparticles in Electrocatalysis: Development in Energy Conversion Process

Contact Info

Product

Resources

About