Microbial synthesis of N, P co-doped carbon supported PtCu catalysts for oxygen reduction reaction

Zhang, Shaohui; Liu, Suying; Huang, Jingwen; Zhou, Haiyang; Liu, Xuanzhi; Tan, Pengfei; Chen, Haoyun; Liang, Yili; Pan, Jun

doi:10.1016/j.jechem.2023.05.036

Cited by 18 publications

(8 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the P 2p spectrum, the binding energy at 134.4 eV corresponds to the P heteroatom bonded with C (Figure 3i). 41,42 Combined with N 1s spectra in Figure 3h, XPS results demonstrate that N and P are successfully codoped onto the carbon surface of PN-CNE. The XPS N 1s of the SN-CNE displays the presence of three N coordination environments (Figure 3j), namely, graphite N (401.4 eV), pyrrole N (400.6 eV), and pyridine N (399.1 eV).…”

Section: ■ Results and Discussionmentioning

confidence: 80%

Simple and Efficient Method for Screening Electrocatalyst Supports at the Single Nanoparticle Level

Zhao,

Wei,

Sun

et al. 2024

J. Phys. Chem. C

View full text Add to dashboard Cite

Catalyst supports can efficiently regulate the activity and stability of catalysts. However, the development of an efficient catalyst support is currently based on trial and error and is very time-consuming. Herein, we propose a rapid electrochemical screening method for heteroatom-doped carbon supports to enhance the oxygen reduction reaction (ORR) activity of PtNPs at the single nanoparticle (NP) level, without an inhomogeneous averaging contribution. When individual PtNPs collide at a functionalized carbon nanocone electrode with different heteroatom (X) doping, a catalytic structure of Pt−X−C is constructed, enabling the rapid screening of potential heteroatom-doped carbon supports. Our results demonstrate that the PtNPs on a nitrogen and phosphorus dual-doped carbon support exhibit excellent ORR performance. This work provides a simple and efficient method for screening highly efficient electrocatalyst supports at the single NP level.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 80%

Simple and Efficient Method for Screening Electrocatalyst Supports at the Single Nanoparticle Level

Zhao,

Wei,

Sun

et al. 2024

J. Phys. Chem. C

View full text Add to dashboard Cite

show abstract

“…Currently, researchers have developed some strategies to regulate the activity of nanozymes based on spin states, highest occupied molecular orbital, lowest unoccupied molecular orbital, and electron transfer. − Among these strategies, electron transfer is considered a typical parameter related to catalytic activity of nanozymes. − Electron transfer can regulate the d-band structure of metal nanocatalysts and enhance the adsorption of reaction intermediates, thereby lowering the energy barrier and promoting the rate-limiting step. − Recent studies have revealed that transferring electrons from active sites to carriers helps improve catalytic activity . However, the correlation between electron transfer number and catalytic activity is a topic of ongoing debate in the field of nanozymes, and the question of whether increasing or decreasing the number of electron transfer is conducive to enhancing the catalytic activity of nanozymes remains unresolved.…”

Section: Introductionmentioning

confidence: 99%

Modulating Electron Transfer between Pt and MOF Support through Pd Doping Promotes Nanozyme Catalytic Efficiency

Guo,

Xue,

Shen

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Electron transfer is considered to be a typical parameter that affects the catalytic activity of nanozymes. However, there is still controversy regarding whether higher or lower electron transfer numbers are beneficial for improving the catalytic activity of nanozymes. To address this issue, we propose the introduction of Pd doping as an important electron regulation strategy to tune electron transfer between Pt and ZIF-8 carriers (Pt x Pd 1 @ZIF-8). We observe a volcano-shaped relationship between the electron transfer number and catalytic activity, reaching its peak at Pt 4 Pd 1 @ZIF-8. Mechanism studies indicate that as the electron transfer number from Pt to ZIF-8 carriers increases, the d-band center of the active site Pt increases, reducing the occupancy of antibonding states and enhancing the adsorption capacity of the key intermediate (*O). However, a further increase in the adsorption of *O energy makes it difficult to desorb and participate in the next reaction, thus exhibiting volcanic activity. The optimized Pt 4 Pd 1 @ZIF-8 nanozyme is applied to develop an immunoassay for the detection of zearalenone, achieving a detection limit of 0.01 μg/L, which is 6 times higher than that of the traditional enzyme-linked immunosorbent assay. This work not only reveals the potential regulatory mechanism of electron transfer on the catalytic activity of nanozymes but also improves the performance of nanozyme-based biosensors.

show abstract

“…(2) The development of new template strategies such as self-template or template-free approaches presents promising pathways to obtaining the desired structure and maintaining the structural integrity of the catalyst [13]. (3) The development and study of intermediates, for example, Escherichia coli [14], provides new routes in influencing PtCu absorption and uniform metal dispersion. On the other hand, since conventional high-temperature processing can lead to structural degradation and reduced performance [15], advanced annealing strategies, such as applying surface overcoating as an anti-sinter layer, and ultrafast heating methods are developed [16].…”

Section: Introductionmentioning

confidence: 99%

Recent Advances of PtCu Alloy in Electrocatalysis: Innovations and Applications

Shen,

Tang,

Shen

2024

Catalysts

View full text Add to dashboard Cite

Developing highly active and durable platinum-based catalysts is crucial for electrochemical renewable energy conversion technologies but the limited supply and high cost of platinum have hindered their widespread implementation. The incorporation of non-noble metals, particularly copper, into Pt catalysts has been demonstrated as an effective solution to reduce Pt consumption while further promoting their performance, making them promising for various electrocatalytic reactions. This review summarizes the latest advances in PtCu-based alloy catalysts over the past several years from both synthetic and applied perspectives. In the synthesis section, the selection of support and reagents, synthesis routes, as well as post-treatment methods at high temperatures are reviewed. The application section focuses not only on newly proposed electrochemical reactions such as nitrogen-related reactions and O2 reduction but also extends to device-level applications. The discussion in this review aims to provide further insights and guidance for the development of PtCu electrocatalysts for practical applications.

show abstract

Microbial synthesis of N, P co-doped carbon supported PtCu catalysts for oxygen reduction reaction

Cited by 18 publications

References 62 publications

Simple and Efficient Method for Screening Electrocatalyst Supports at the Single Nanoparticle Level

Simple and Efficient Method for Screening Electrocatalyst Supports at the Single Nanoparticle Level

Modulating Electron Transfer between Pt and MOF Support through Pd Doping Promotes Nanozyme Catalytic Efficiency

Recent Advances of PtCu Alloy in Electrocatalysis: Innovations and Applications

Contact Info

Product

Resources

About