Carbon layers on Pt/TiO2 induced dramatic promotion of photocatalytic H2 production: a combined experimental and computation study

Zhou, Man; Xue, Suting; Feng, Qinglai; Liu, Xuan; Wu, Wangchen; Zhou, Yanli; Ni, Minmin; Zheng, Xudong; Xu, Shengyuan; Zhao, Jin; Li, Zhongyu

doi:10.1016/j.mtener.2023.101294

Cited by 4 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the integration of a co-catalyst is a promising approach to boost the photocatalytic hydrogen production performance of the catalyst. 18 Precious metals such as Au, 19,20 Pd, 21,22 and Pt 23–25 are regularly employed as co-catalysts. They can greatly enhance the photocatalytic activity of the catalyst by virtue of the plasma effect and the low Fermi level.…”

Section: Introductionmentioning

confidence: 99%

Sulfur vacancies and a Ni₂P co-catalyst synergistically boost the photocatalytic H₂ evolution of Zn_0.5Cd_0.5S

Xia,

Qin,

Xie

et al. 2024

Green Chem.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Sulfur vacancies and a Ni₂P co-catalyst synergistically boost the photocatalytic H₂ evolution of Zn_0.5Cd_0.5S

Xia,

Qin,

Xie

et al. 2024

Green Chem.

View full text Add to dashboard Cite

show abstract

“…15 Mechanism-wise, coating of TiO 2 with a graphitized carbonlayer can provide advantages regarding the enhancement of photocatalytic activity: since (i) the high electrical conductivity of the graphitized, sp 2 -carbon layer can be beneficial to decrease photogenerated carriers' recombination 16 and (ii) in cases where the semiconductor suffers from chemical degradation, the carbon layer can provide chemical protection and increase its chemical stability. 17 Literature data show that the carbon contribution to H 2 generation by TiO 2 , depends critically on the details of the interfacial contact between the carbon and the TiO 2 particle. 15 It is now well anticipated that a successful carbon-coating strategy of TiO 2 should fulfill at least the following requirements.…”

Section: Introductionmentioning

confidence: 99%

Carbon-Coated TiO₂ Nanoparticles for Noble-Metal-Free Photocatalytic H₂ Production from H₂O

Deligiannakis,

Bletsa,

Mouzourakis

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Core−shell {nanocarbon-coated/TiO 2 } hybrids (C@ TiO 2 ) were developed through a double-nozzle flame spray pyrolysis (DN-FSP) process. By optimizing the DN-FSP parameters, we have achieved control over the subnanometric thickness of the carbon shell as well as the anatase/rutile ratio within the TiO 2 . A library of C@ TiO 2 hybrids, with varying carbon contents and sp 2 /sp 3 ratios, has been produced. These optimized C@TiO 2 hybrids are capable of performing efficient photocatalytic hydrogen production from water, exceeding 400 μmol g −1 h −1 , without the need for any noble-metal cocatalyst. HR-TEM has demonstrated that the DN-FSP process facilitates the formation of a nanocarbon shell and carbon nanodots in close contact with the TiO 2 surface. XRD and Raman spectra indicate that this close carbon/TiO 2 interface promotes the formation of a TiO 2 rutile/anatase interphase. EPR spectroscopy shows that the carbon/TiO 2 nanohybrids stabilize reduced Ti 3+ sites at the interface. Moreover, an in situ EPR study of the photoinduced holes/ electrons demonstrates that the nanocarbon moieties act as a very efficient acceptor of the photogenerated electrons. In this way, the highly efficient photocatalytic performance of C@TiO 2 nanohybrids is attributed to the formation of a Z-scheme assembly of {rutile/anatase/carbon} nanophases. From a technological perspective, this work highlights the potential of the DN-FSP process for the scalable synthesis of functional photocatalytic (carbon/metal oxide) nanomaterials.

show abstract

“…[ 38 ] Although, there are previous studies focusing on Pt or PtRu NPs deposited on TiO 2 supports by microwave‐assisted synthesis for direct methanol fuel cells, proton exchange membrane fuel cells, and photocatalytic hydrogen production, their applicability for HOR in alkaline media or at AEMFC device level has not yet been investigated. [ 43–48 ]…”

Section: Introductionmentioning

confidence: 99%

Hydrogenated TiO₂ Carbon Support for PtRu Anode Catalyst in High‐Performance Anion‐Exchange Membrane Fuel Cells

Douglin,

Sekar,

Singh

et al. 2023

Small

View full text Add to dashboard Cite

The availability of durable, high‐performance electrocatalysts for the hydrogen oxidation reaction (HOR) is currently a constraint for anion‐exchange membrane fuel cells (AEMFCs). Herein, a rapid microwave‐assisted synthesis method is used to develop a core–shell catalyst support based on a hydrogenated TiO2/carbon for PtRu nanoparticles (NPs). The hydrogenated TiO2 provides a strong metal‐support interaction with the PtRu NPs, which improves the catalyst's oxophilicity and HOR activity compared to commercial PtRu/C and enables greater size control of the catalyst NPs. The as‐synthesized PtRu/TiO2/C‐400 electrocatalyst exhibits respectable performance in an AEMFC operated at 80 °C, yielding the highest current density (up to 3× higher) within the catalytic region (compared at 0.80–0.90 V) and voltage efficiency (68%@ 0.5 A cm−2) values in the compared literature. In addition, the cell demonstrates promising short‐term voltage stability with a minor voltage decay of 1.5 mV h−1. This “first‐of‐its‐kind in alkaline” work may open further research avenues to develop rapid synthesis methods to prepare advanced core–shell metal‐oxide/carbon supports for electrocatalysts for use in the next‐generation of AEMFCs with potential applicability to the broader electrochemical systems research community.

show abstract

Carbon layers on Pt/TiO2 induced dramatic promotion of photocatalytic H2 production: a combined experimental and computation study

Cited by 4 publications

References 37 publications

Sulfur vacancies and a Ni₂P co-catalyst synergistically boost the photocatalytic H₂ evolution of Zn_0.5Cd_0.5S

Sulfur vacancies and a Ni₂P co-catalyst synergistically boost the photocatalytic H₂ evolution of Zn_0.5Cd_0.5S

Carbon-Coated TiO₂ Nanoparticles for Noble-Metal-Free Photocatalytic H₂ Production from H₂O

Hydrogenated TiO₂ Carbon Support for PtRu Anode Catalyst in High‐Performance Anion‐Exchange Membrane Fuel Cells

Contact Info

Product

Resources

About

Carbon layers on Pt/TiO2 induced dramatic promotion of photocatalytic H2 production: a combined experimental and computation study

Cited by 4 publications

References 37 publications

Sulfur vacancies and a Ni2P co-catalyst synergistically boost the photocatalytic H2 evolution of Zn0.5Cd0.5S

Sulfur vacancies and a Ni2P co-catalyst synergistically boost the photocatalytic H2 evolution of Zn0.5Cd0.5S

Carbon-Coated TiO2 Nanoparticles for Noble-Metal-Free Photocatalytic H2 Production from H2O

Hydrogenated TiO2 Carbon Support for PtRu Anode Catalyst in High‐Performance Anion‐Exchange Membrane Fuel Cells

Contact Info

Product

Resources

About

Sulfur vacancies and a Ni₂P co-catalyst synergistically boost the photocatalytic H₂ evolution of Zn_0.5Cd_0.5S

Sulfur vacancies and a Ni₂P co-catalyst synergistically boost the photocatalytic H₂ evolution of Zn_0.5Cd_0.5S

Carbon-Coated TiO₂ Nanoparticles for Noble-Metal-Free Photocatalytic H₂ Production from H₂O

Hydrogenated TiO₂ Carbon Support for PtRu Anode Catalyst in High‐Performance Anion‐Exchange Membrane Fuel Cells