Multi-yolk–shell bismuth@porous carbon as a highly efficient electrocatalyst for artificial N<sub>2</sub>fixation under ambient conditions

Qiu, Yu; Zhao, Sen; Qin, Mingxin; Diao, Jinxiang; Liu, Shuangquan; Dai, Lanxin; Zhang, Wenhua; Guo, Xiaohui

doi:10.1039/d0qi00153h

Cited by 15 publications

(8 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure 2b and Figure S10d (Supporting Information), the in situ synthesized Bi NPs achieve a maximum NH 3 yield of 3.25 ± 0.08 µg cm −2 h −1 at −0.7 V versus RHE and maximum faradaic efficiency (FE) of 12.11 ± 0.84% at −0.6 V versus RHE, which are comparable with previously reported bismuth catalysts (Table S1, Supporting Information). [ 25–31,51–53 ] N 2 H 4 cannot be detected in the electrolytes after 1 h electrolysis by the Watt and Chrisp method (Figures S11 and S12, Supporting Information). The electrocatalytic stability of the Bi NPs was evaluated by consecutive cycling tests at −0.7 V versus RHE without changing the electrode and Nafion membrane.…”

Section: Figurementioning

confidence: 99%

In Situ Fragmented Bismuth Nanoparticles for Electrocatalytic Nitrogen Reduction

Yao

Tang

et al. 2020

Advanced Energy Materials

194

133

View full text Add to dashboard Cite

The electrochemical nitrogen reduction reaction (NRR) is a promising alternative to the energy‐intensive Haber–Bosch process for ammonia synthesis. Among the possible electrocatalysts, bismuth‐based materials have shown unique NRR properties due to their electronic structures and poor hydrogen evolution activity. However, identification of the active sites and reaction mechanism is still difficult due to structural and chemical changes under reaction potentials. Herein, in situ Raman spectroscopy, complemented by electron microscopy, is employed to investigate the structural and chemical transformation of the Bi species during the NRR. Nanorod‐like bismuth‐based metal–organic frameworks are reduced in situ and fragment into densely contacted Bi0 nanoparticles under the applied potentials. The fragmented Bi0 nanoparticles exhibit excellent NRR performance in both neutral and acidic electrolytes, with an ammonia yield of 3.25 ± 0 .08 µg cm−2 h−1 at −0.7 V versus reversible hydrogen electrode and a Faradaic efficiency of 12.11 ± 0.84% at −0.6 V in 0.10 m Na2SO4. Online differential electrochemical mass spectrometry detects the production of NH3 and N2H2 during NRR, suggesting a possible pathway through two‐step reduction and decomposition. This work highlights the importance of monitoring and optimizing the electronic and geometric structures of the electrocatalysts under NRR conditions.

show abstract

Section: Figurementioning

confidence: 99%

In Situ Fragmented Bismuth Nanoparticles for Electrocatalytic Nitrogen Reduction

Yao

Tang

et al. 2020

Advanced Energy Materials

194

133

View full text Add to dashboard Cite

show abstract

“…[256] Apart from the CO 2 RR, Bi nanomaterials also play an important role in N 2 reduction reaction (NRR) because of the weak binding with H adatoms. [68,70,198,257,258] For example, in 2020, Xia et al [68] successfully fabricated Bi nanosheets with a single-crystalline structure supported on a carbon fiber paper were prepared through the in situ electrocatalytic topotactic transformation of BiOI nanosheets, which exhibited an NH 3 yield of 12.49 µg h −1 mg−1 cat. and a high faradaic efficiency of 7.09%.…”

Section: (17 Of 34)mentioning

confidence: 99%

Emerging Mono‐Elemental Bismuth Nanostructures: Controlled Synthesis and Their Versatile Applications

Huang

Zhu

Wang

et al. 2020

Adv Funct Materials

128

View full text Add to dashboard Cite

Bismuth (Bi), as a nontoxic and inexpensive diamagnetic heavy metal, has recently been utilized for the preparation of a variety of nanomaterials, such as nanoparticles, nanowires, nanotubes, nanosheets, etc., with a tunable bandgap, unique structure, excellent physicochemical properties, and compositional features for versatile properties, such as near‐infrared absorbance, high X‐ray attenuation coefficient, excellent photothermal conversion efficiency, and a long circulation half‐life. These features have endowed mono‐elemental Bi nanomaterials with desirable performances for electronics/optoelectronics, energy storage and conversion, catalysis, nonlinear photonics, sensors, biomedical applications, etc. This review summarizes the controlled synthesis of mono‐elemental Bi nanomaterials with different shapes and sizes, highlights the state‐of‐the‐art progress of the desired applications of mono‐elemental Bi nanomaterials, and presents some personal insights on the challenges and future opportunities in this research area. It is hoped that the controllable manipulation techniques of Bi nanomaterials, along with their unique properties, can shed light on the next‐generation devices based on Bi nanostructures and Bi‐related nanomaterials.

show abstract

“…However, as a semiconductive semi‐metal, the poor electrical conductivity of Bi would inhibit the electron transfer during electrocatalysis [7c] . To improve the performance of Bi‐based materials in electrochemical energy storage and conversion, hybrid with conductive carbon is a common method to enhance electrical conductivity [8] . Developing bimetallic alloys is another potential strategy to improve the intrinsic activity of Bi‐based catalysts [9] .…”

Section: Introductionmentioning

confidence: 99%

Gel‐Derived Amorphous Bismuth–Nickel Alloy Promotes Electrocatalytic Nitrogen Fixation via Optimizing Nitrogen Adsorption and Activation

Fang

Qian

et al. 2020

Angew Chem Int Ed

View full text Add to dashboard Cite

To achieve the electrochemical nitrogen reduction reaction (NRR) for efficient and sustainable NH3 production, catalysts should exhibit high selectivity and activity with optimal adsorption energy. Herein we developed a three‐dimensional (3D) amorphous BiNi alloy toward a significantly enhanced NRR compared with its crystalline and metal counterparts. Ni alloying enables the chemisorption of nitrogen and the lower free‐energy change for the *NNH formation, and the 3D alloy electrocatalyst exhibits high catalytic activity for NH3 production with a yield rate of 17.5 μg h−1 mgcat−1 and Faradaic efficiency of 13.8 %. The enhanced electron transfer and increased electrochemical surface area were revealed in the interconnected porous scaffold, affording it sufficiently efficient and stable activity for potential practical applications. This work offers new insights into optimizing the adsorption energy of reactants and intermediates combined with tuning the crystallinity of NRR electrocatalysts.

show abstract

Multi-yolk–shell bismuth@porous carbon as a highly efficient electrocatalyst for artificial N₂fixation under ambient conditions

Abstract: Multi-yolk–shell bismuth@porous carbon catalyst was fabricated by facile synthetic processes. The MB@PC catalyst displays deliver a NH3 yield of 28.63 μg h−1 mg−1cat., a Faraday efficiency of 10.58 % at −0.5 V versus RHE under ambient conditions.

Cited by 15 publications

References 60 publications

In Situ Fragmented Bismuth Nanoparticles for Electrocatalytic Nitrogen Reduction

In Situ Fragmented Bismuth Nanoparticles for Electrocatalytic Nitrogen Reduction

Emerging Mono‐Elemental Bismuth Nanostructures: Controlled Synthesis and Their Versatile Applications

Gel‐Derived Amorphous Bismuth–Nickel Alloy Promotes Electrocatalytic Nitrogen Fixation via Optimizing Nitrogen Adsorption and Activation

Contact Info

Product

Resources

About

Multi-yolk–shell bismuth@porous carbon as a highly efficient electrocatalyst for artificial N2fixation under ambient conditions

Abstract: Multi-yolk–shell bismuth@porous carbon catalyst was fabricated by facile synthetic processes. The MB@PC catalyst displays deliver a NH3 yield of 28.63 μg h−1 mg−1cat., a Faraday efficiency of 10.58 % at −0.5 V versus RHE under ambient conditions.

Cited by 15 publications

References 60 publications

In Situ Fragmented Bismuth Nanoparticles for Electrocatalytic Nitrogen Reduction

In Situ Fragmented Bismuth Nanoparticles for Electrocatalytic Nitrogen Reduction

Emerging Mono‐Elemental Bismuth Nanostructures: Controlled Synthesis and Their Versatile Applications

Gel‐Derived Amorphous Bismuth–Nickel Alloy Promotes Electrocatalytic Nitrogen Fixation via Optimizing Nitrogen Adsorption and Activation

Contact Info

Product

Resources

About

Multi-yolk–shell bismuth@porous carbon as a highly efficient electrocatalyst for artificial N₂fixation under ambient conditions