Single-Atom Catalysts across the Periodic Table

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(21), P. 11703 - 11809

Published: Oct. 21, 2020

Isolated atoms featuring unique reactivity are at the heart of enzymatic and homogeneous catalysts. In contrast, although concept has long existed, single-atom heterogeneous catalysts (SACs) have only recently gained prominence. Host materials similar functions to ligands in catalysts, determining stability, local environment, electronic properties isolated thus providing a platform for tailoring targeted applications. Within just decade, we witnessed many examples SACs both disrupting diverse fields catalysis with their distinctive substantially enriching our understanding molecular processes on surfaces. To date, term SAC mostly refers late transition metal-based systems, but numerous exist which other elements play key catalytic roles. This review provides compositional encyclopedia SACs, celebrating 10th anniversary introduction this term. By defining broadest sense, explore full elemental diversity, joining different areas across whole periodic table, discussing historical milestones recent developments. particular, examine coordination structures associated accessed through distinct single-atom–host combinations relate them main applications thermo-, electro-, photocatalysis, revealing trends element-specific evolution, host design, uses. Finally, highlight frontiers field, including multimetallic atom proximity control, possible multistep cascade reactions, identifying challenges, propose directions future development flourishing field.

Language: Английский

---

A review on heterogeneous photocatalysis for environmental remediation: From semiconductors to modification strategies

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2022, Volume and Issue: 43(2), P. 178 - 214

Published: Jan. 17, 2022

Language: Английский

---

Theoretical Understandings of Graphene-based Metal Single-Atom Catalysts: Stability and Catalytic Performance

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(21), P. 12315 - 12341

Published: Oct. 28, 2020

Research on heterogeneous single-atom catalysts (SACs) has become an emerging frontier in catalysis science because of their advantages high utilization noble metals, precisely identified active sites, selectivity, and tunable activity. Graphene, as a one-atom-thick two-dimensional carbon material with unique structural electronic properties, been reported to be superb support for SACs. Herein, we provide overview recent progress investigations graphene-based Among the large number publications, will selectively focus stability metal single-atoms (SAs) anchored different sites graphene catalytic performances SACs chemical reactions, including thermocatalysis electrocatalysis. We summarize fundamental understandings structures intrinsic connection properties SACs, also brief perspective future design efficient graphene-like materials.

Language: Английский

---

Orbital coupling of hetero-diatomic nickel-iron site for bifunctional electrocatalysis of CO2 reduction and oxygen evolution

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: July 2, 2021

While inheriting the exceptional merits of single atom catalysts, diatomic site catalysts (DASCs) utilize two adjacent atomic metal species for their complementary functionalities and synergistic actions. Herein, a DASC consisting nickel-iron hetero-diatomic pairs anchored on nitrogen-doped graphene is synthesized. It exhibits extraordinary electrocatalytic activities stability both CO

Language: Английский

---

Single-atom catalysts for photocatalytic energy conversion

Joule, Journal Year: 2022, Volume and Issue: 6(1), P. 92 - 133

Published: Jan. 1, 2022

Artificial photocatalytic energy conversion represents a highly intriguing strategy for solving the crisis and environmental problems by directly harvesting solar energy. The development of efficient photocatalysts is central task pushing real-world application reactions. Due to maximum atomic utilization efficiency distinct advantages outstanding catalytic activity, single-atom catalysts (SACs) have emerged as promising candidates photocatalysts. In current review, recent progresses challenges on SACs systems are presented. Fundamental principles focusing charge separation/transfer molecular adsorption/activation photocatalysis systemically explored. We outline how isolated reactive sites facilitate photogenerated electron–hole transfer promote construction photoactivation cycles. widespread adoption in diverse reactions also comprehensively introduced. By presenting these advances addressing some future with potential solutions related integral over SACs, we expect shed light forthcoming research conversion.

Language: Английский

---

The Progress and Outlook of Metal Single-Atom-Site Catalysis

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(40), P. 18155 - 18174

Published: Sept. 29, 2022

Single-atom-site catalysts (SASCs) featuring maximized atom utilization and isolated active sites have progressed tremendously in recent years as a highly prosperous branch of catalysis research. Varieties SASCs been developed that show excellent performance many catalytic applications. The major goal SASC research is to establish feasible synthetic strategies for the preparation high-performance catalysts, achieve an in-depth understanding active-site structures mechanisms, develop practical with industrial value. This Perspective describes up-to-date development related such dual-atom-site (DASCs) nano-single-atom-site (NSASCs), analyzes current challenges encountered by these applications, proposes their possible future path.

Language: Английский

---

Ta3N5/CdS Core–Shell S-scheme Heterojunction Nanofibers for Efficient Photocatalytic Removal of Antibiotic Tetracycline and Cr(VI): Performance and Mechanism Insights

Advanced Fiber Materials, Journal Year: 2023, Volume and Issue: 5(3), P. 994 - 1007

Published: Feb. 16, 2023

Language: Английский

---

Strategies and Challenges on Selectivity of Photocatalytic Oxidation of Organic Substances

Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(8)

Published: Jan. 20, 2021

Abstract Most organic compounds are conventionally synthesized under high temperature and elevated pressure, resulting in significant energy consumption wastage. Heterogeneous photocatalytic oxidation has the potential to provide a green route for synthesis of majority industrially important chemicals. The major limiting factor affecting efficiency is lack selectivity; therefore, substantial effort been devoted solving this problem. Responding fast‐moving progress, review gives an overview fundamental understanding reactive oxygen species involved oxidations furthermore, general mechanisms few crucial reactions. focus critical on discussion diverse strategies improve selectivity value chemicals, including band engineering, metal loading, hybrid materials, defect with primary aim highlighting catalyst design protocols based reaction mechanism. Finally, difficulties challenges developing highly selective photocatalysts comprehensively discussed order help direct future research.

Language: Английский

---

Noble-metal single-atoms in thermocatalysis, electrocatalysis, and photocatalysis

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(5), P. 2954 - 3009

Published: Jan. 1, 2021

This review summarizes the recent advances about noble-metal single-atom catalysts in thermocatalysis, electrocatalysis, and photocatalysis.

Language: Английский

---

Non-carbon-supported single-atom site catalysts for electrocatalysis

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(5), P. 2809 - 2858

Published: Jan. 1, 2021

Non-carbon supported SACs were classified into eight categories based on the nature of their substrates for first time, and corresponding anchoring stabilization mechanisms have been systematically summarized discussed.

Language: Английский

---