Mesoporous titanium niobium nitrides supported Pt nanoparticles for highly selective and sensitive formaldehyde sensing

Huang, Chaozhu; Adimi, Samira; Li, Dongliang; Guo, Haichuan; Thomas, Tiju; Attfield, J. Paul; Ruan, Shengping; Qu, Fengdong

doi:10.1039/d1ta02433g

Cited by 20 publications

(5 citation statements)

References 58 publications

(54 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2i , the BE of Pt loaded on TiN@C is less than that of the Pt/TiN, that is, the electronic structure and SMSI still exists. Previous study have pointed out that there is a strong interaction between Pt NPs and transition metal nitrides, 22 and the smaller Pt NPs we prepared are more conducive to produce and strengthen the SMSI. 23 Based on the change in BE between Pt and N, the interaction between Pt and TiN mainly originates from the interaction between Pt and N. The SMSI makes the diffusion barrier of Pt on the support surface higher.…”

mentioning

confidence: 74%

A TiN@C core–shell support for improving Pt catalyst corrosion resistance

Zhang

Liu

et al. 2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 74%

A TiN@C core–shell support for improving Pt catalyst corrosion resistance

Zhang

Liu

et al. 2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…While the τ rec was long, primarily because the energy obtained from RT was much lower than the activation energy for linalool molecule desorption [34]. In view of practical application of the as-developed sensor, an outstanding capability is to distinguish linalool from various atmospheres [35]. We also investigated the selectivity of all the sensors towards 20 ppm of different kinds of target gases (NH 3 , NO 2 , CO 2 , C 9 H 18 O, and C 5 H 5 N), as illustrated in Fig.…”

Section: Gas Sensing Performancementioning

confidence: 99%

Oxygen vacancy engineering on cerium oxide nanowires for room-temperature linalool detection in rice aging

Zhang

2022

J Adv Ceram

View full text Add to dashboard Cite

It is a huge challenge for metal oxide semiconductor gas sensors to inspect volatile organic compounds (VOCs) at room temperature (RT). Herein, the effective utilization of cerium oxide (CeO2) nanowires for RT detection of VOCs was realized via regulating its surface chemical state. Oxygen vacancy engineering on CeO2 nanowires, synthesized via hydrothermal method, can be manipulated by annealing under various controlled atmospheres. The sample annealed under 5%H2+95%Ar condition exhibited outstanding RT sensing properties, displaying a high response of 16.7 towards 20 ppm linalool, a fast response and recovery time (16 and 121 s, respectively), and a low detection of limit of 0.54 ppm. The enhanced sensing performance could be ascribed for the synergistic effects of its nanowire morphology, the large specific surface area (83.95 m2/g), and the formation of extensive oxygen vacancy accompanied by an increase in Ce3+. Additionally, the practicability of the sensor was verified via two varieties of rice (Indica and Japonica rice) stored in various periods (1, 3, 5, 7, 15, and 30 d). The experimental results revealed that the sensor was able to distinguish Indica rice from Japonica rice. Accordingly, the as-developed sensor delivers a strategic material to develop high-performance RT electronic nose equipment for monitoring rice quality.

show abstract

“…Metal oxides, including CeO 2 , TiO 2 , ZnO, Co 3 O 4 , and FeO x , have been extensively investigated as support for the SMSI effect. − However, due to their poor conductivity, which limits their applicability as electrocatalyst supports in PEMFCs, more sophisticated SMSI support has been created, such as transition metal nitrides (TMNs). − TMNs have gained significant attention due to their intermetallic nature, offering advantages such as high corrosion resistance, thermal stability, chemical stability, and excellent electrical conductivity. , Among the various TMNs, titanium nitride (TiN) has been extensively investigated; however, TiN continues to have slow corrosion issues in acidic situations. − Conversely, CrN exhibits remarkable corrosion resistance, which has led to its use as a covering material for PEMFC bipolar plates. , In addition, CrN also has good conductivity and high-temperature stability, and even more recent studies raise the possibility that CrN has ORR-catalyzing action. − More studies have suggested that nitride as a support has a beneficial regulatory influence on the ionomer distribution in the CL . Therefore, exploring the potential of TMNs, particularly CrN, as alternative catalyst supports for the ORR in PEMFCs holds promise for overcoming the limitations associated with conventional carbon-based catalyst supports.…”

Section: Introductionmentioning

confidence: 99%

Controllable Porous Nanogrids of Chromium Nitride with Strong Metal–Support Interactions for Achieving Stable Oxygen Reduction Reaction

Lin,

Chen,

Huo

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

To facilitate the extensive adoption of proton exchange membrane fuel cells (PEMFCs), it is important to address the issues of electrochemical corrosion and weak interaction with platinum (Pt) caused by the carbon support. Herein, a strong metal−support interaction (SMSI) effect was constructed with Pt nanoparticles loaded in porous chromium nitride (CrN) nanogrids (labeled as Pt/CrN). The porous CrN nanogrids are synthesized via a Maillard nitridation method, and better support size was obtained by controlling the average diameter of CrN nanoparticles by adjusting the proportion of precursors in the oxide preparation. Electrochemical tests establish that Pt/CrN is a stable oxygen reduction reaction catalyst with halfwave potential attenuated by only 4.5 mV after accelerated durability tests, which can be a result of the SMSI effect between Pt and CrN. Moreover, CrN was shown to modulate the ionomer distribution in the catalyst layer (CL). Further investigations have revealed that CrN remains stable up to 1.2 V but degrades significantly above 1.4 V. This work not only broadens the spectrum of Pt-based catalyst support options but also provides insights into the engineering of the SMSI effect. This knowledge will benefit the future design of transition metal nitride for PEMFCs and other technologies.

show abstract

Mesoporous titanium niobium nitrides supported Pt nanoparticles for highly selective and sensitive formaldehyde sensing

Abstract: A highly sensitive and selective formaldehyde sensor is prepared by using mesoporous Ti0.75Nb0.25N supported Pt NPs as a high efficiency gas sensing electrode material.

Cited by 20 publications

References 58 publications

A TiN@C core–shell support for improving Pt catalyst corrosion resistance

A TiN@C core–shell support for improving Pt catalyst corrosion resistance

Oxygen vacancy engineering on cerium oxide nanowires for room-temperature linalool detection in rice aging

Controllable Porous Nanogrids of Chromium Nitride with Strong Metal–Support Interactions for Achieving Stable Oxygen Reduction Reaction

Contact Info

Product

Resources

About