Atomically imaging single atom catalysts and their behaviors by scanning tunneling microscopy

Sun, Hongli; Sun, Like; Liao, Yanglong; Zhou, Zirui; Ding, Jie; Song, Shaotang; Liu, Bin; Su, Chenliang

doi:10.1039/d3ey00174a

Cited by 3 publications

(1 citation statement)

References 71 publications

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“…The AC-HAADF-STEM provides information in distinguishing different element species in the atom-support composites. Through the AC-HAADF-STEM images, the arrangement of single atoms and their interaction with the support material will be recognized [90] . Scanning tunneling microscopes (STM) are another effective tool to characterize surface geometric and electronic structures of SACs at atomic resolution and provide insights into single-atom catalysis [91] .…”

Section: Techniques For Sacs-based Nitrr Characterizationmentioning

confidence: 99%

Electrochemically nitrate remediation by single-atom catalysts: advances, mechanisms, and prospects

Li,

Yang,

et al. 2024

energymater

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Electrocatalytic nitrate reduction reaction (NITRR) is highly desirable for remediating nitrate (NO3-) pollution and producing ammonia (NH3) under mild conditions. To date, great efforts have been made to fabricate selective, efficient, and stable electrocatalysts for NITRR. Among the numerous strategies, single-atom catalysts (SACs) have received extensive interest and investigations due to their cost-effective and maximum atomic utilization. However, the further development of SACs-based NITRR remains hindered by a poor understanding of their in-depth mechanisms. Consequently, this review summarizes the recent advances of SACs for the NITRR, including Cu-SACs, Fe-SACs, Zn-SACs, Co-SACs, and single-atom alloys. In addition, the characterization techniques for SACs and reaction pathways of NITRR are presented to give a robust understanding of SACs-based NITRR. Finally, we analyze the current challenges in fabricating SACs for NITRR, while the key factors for further improving NITRR performances are also examined.

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Section: Techniques For Sacs-based Nitrr Characterizationmentioning

confidence: 99%

Electrochemically nitrate remediation by single-atom catalysts: advances, mechanisms, and prospects

Li,

Yang,

et al. 2024

energymater

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Safety Landscape of Therapeutic Nanozymes and Future Research Directions

Tagaras,

Song,

Sahar

et al. 2024

Advanced Science

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Oxidative stress and inflammation are at the root of a multitude of diseases. Treatment of these conditions is often necessary but current standard therapies to fight excessive reactive oxygen species (ROS) and inflammation are often ineffective or complicated by substantial safety concerns. Nanozymes are emerging nanomaterials with intrinsic enzyme‐like properties that hold great promise for effective cancer treatment, bacterial elimination, and anti‐inflammatory/anti‐oxidant therapy. While there is rapid progress in tailoring their catalytic activities as evidenced by the recent integration of single‐atom catalysts (SACs) to create next‐generation nanozymes with superior activity, selectivity, and stability, a better understanding and tuning of their safety profile is imperative for successful clinical translation. This review outlines the current applied safety assessment approaches and provides a comprehensive summary of the safety knowledge of therapeutic nanozymes. Overall, nanozymes so far show good in vitro and in vivo biocompatibility despite considerable differences in their composition and enzymatic activities. However, current safety investigations mostly cover a limited set of basic toxicological endpoints, which do not allow for a thorough and deep assessment. Ultimately, remaining research gaps that should be carefully addressed in future studies are highlighted, to optimize the safety profile of therapeutic nanozymes early in their pre‐clinical development.

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Progress in tracking electrochemical CO2 reduction intermediates over single-atom catalysts using operando ATR-SEIRAS

Yan,

Ni,

Sun

et al. 2024

Chinese Journal of Catalysis

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Atomically imaging single atom catalysts and their behaviors by scanning tunneling microscopy

Abstract: Understanding mechanism of single-atom catalysis is essential to design and refine systems for improved catalytic performance. However, given the complex structure and large variety of single-atom catalysts (SACs), characterizing the...

Cited by 3 publications

References 71 publications

Electrochemically nitrate remediation by single-atom catalysts: advances, mechanisms, and prospects

Electrochemically nitrate remediation by single-atom catalysts: advances, mechanisms, and prospects

Safety Landscape of Therapeutic Nanozymes and Future Research Directions

Progress in tracking electrochemical CO2 reduction intermediates over single-atom catalysts using operando ATR-SEIRAS

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