Residual Trifluorosulfonic Acid in Amino-Functionalized Covalent Triazine Frameworks for Boosting Photocatalytic Hydrogen Evolution DOI Open Access
Chengxiao Zhao, Zhaolin Li, Weiping Xiao

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 15(1), P. 12 - 12

Published: Dec. 26, 2024

The utilization of covalent triazine frameworks (CTFs) as photocatalysts has witnessed rapid advancements in the field photocatalysis. However, presence residual components certain CTFs materials is widely ignored regards their influence on photocatalytic performance. In this study, we find that trifluorosulfonic acid (TfOH) molecules stably exist amino-functionalized CTF-NH2 framework, which enhance affinity for water. experimental results indicate TfOH elevates VB position CTF-NH2, facilitating oxidization both water and sacrificial agents. Moreover, present accelerates separation transfer photogenerated charge carriers to Pt cocatalyst. Consequently, CTF-NH2-F containing demonstrates a significant enhancement hydrogen evolution, achieving about 250 µmol over duration 3 h illumination, represents 2.5-fold increase compared observed CTF-NH2. This research underscores substantial impact residues exert

Language: Английский

Iron-catalyzed decarboxylative radical addition to chiral azomethine imines upon visible light DOI

Arona Fall,

Mihaela Magdei,

Mariia Savchuk

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(49), P. 6316 - 6319

Published: Jan. 1, 2024

Eco-efficient LMCT based redox-neutral iron-catalyzed decarboxylative radical addition to chiral azomethine imines upon visible light.

Language: Английский

Citations

4
Overlooked role of transition metal impurities (cobalt and nickel) substitution in tuning pyrite to activate peroxymonosulfate for degradation of emerging pollutants DOI

Qingcun Gu,

Xiaoya Gao,

Bingheng Liang

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132280 - 132280

Published: Feb. 1, 2025

Language: Английский

Citations

0
Facile synthesis of urea-modified sewage sludge biochar for efficient sulfamethoxazole degradation via an electron transfer pathway DOI
Yingjian Yu, Yulong Li,

Jingyue Bao

et al.

Environmental Pollution, Journal Year: 2025, Volume and Issue: 374, P. 126256 - 126256

Published: April 15, 2025

Language: Английский

Citations

0
Guideline for Analysis and Prevention of Contamination Catalysis DOI Creative Commons
János Daru, Zsombor Gonda, Zoltán May

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract Over the last decades, numerous efforts have been made to replace metal catalysts with cheaper and earth‐abundant alternatives or completely exclude metals from cross‐coupling reactions while maintaining high efficiency in target transformation. However, follow‐up studies often revealed role of impurities catalytic process. Thus, active can lead mechanistic misinterpretations, these could initiate erroneous research directives severe reproducibility problems. Milestone precedents impurity effect are well documented literature. Interestingly, this fallacy has reoccurred repeatedly over years due a lack thorough appropriate study schemes for identifying effects. Herein, we propose guideline elucidate real catalyst future transformations, aiming reveal correct mechanism help novel processes. Although mainly focuses on problems related trace transition metals, it also offers basis more general research.

Language: Английский

Citations

0
Guideline for Analysis and Prevention of Contamination Catalysis DOI Creative Commons
János Daru, Zsombor Gonda, Zoltán May

et al.

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract Over the last decades, numerous efforts have been made to replace metal catalysts with cheaper and earth‐abundant alternatives or completely exclude metals from cross‐coupling reactions while maintaining high efficiency in target transformation. However, follow‐up studies often revealed role of impurities catalytic process. Thus, active can lead mechanistic misinterpretations, these could initiate erroneous research directives severe reproducibility problems. Milestone precedents impurity effect are well documented literature. Interestingly, this fallacy has reoccurred repeatedly over years due a lack thorough appropriate study schemes for identifying effects. Herein, we propose guideline elucidate real catalyst future transformations, aiming reveal correct mechanism help novel processes. Although mainly focuses on problems related trace transition metals, it also offers basis more general research.

Language: Английский

Citations

0
Synthesis of Alkyl Bis(trifluoromethyl)carbinols via Fe-LMCT-Enabled Hydrobis(trifluoromethyl)carbinolation of Alkenes DOI

Huaixuan Guo,

Wing‐Yan Lai,

Jie Ni

et al.

Organic Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

Bis(trifluoromethyl)carbinols are valuable pharmacophores, yet their synthesis is challenging, largely due to a scarcity of safe and effective bis(trifluoromethyl)carbinolation reagents. Here, we realized the hydrobis(trifluoromethyl)carbinolation alkenes, utilizing stable readily accessible 2,2-bis(trifluoromethyl)glycolic acid as source both bis(trifluoromethyl)carbinol unit hydrogen atom. This process leverages photoinduced Fe-LMCT-enabled radical decarboxylation that generates key intermediate. Our mild protocol facilitates diverse range alkyl bis(trifluoromethyl)carbinols, including structurally complex molecules with pharmaceutical relevance.

Language: Английский

Citations

2
Guideline for Elucidating Catalysts DOI Creative Commons
János Daru, Zsombor Gonda, Zoltán May

et al.

Published: April 2, 2024

In the last decades, numerous efforts have been made to replace metal catalysts with cheaper and earth-abundant alternatives or complete exclusion of metals in cross-coupling reactions, maintaining high efficiency target transformation. However, follow-up studies often revealed role impurities catalytic process. Thus, active lead mechanistic misinterpretations, could initiate erroneous research directives, can severe reproducibility problems. Milestone precedents impurity effect reactions are well documented literature. Interestingly, this fallacy has occurred repeatedly over years due lack thorough appropriate study scheme for identifying effect. Herein, we propose a guideline elucidating real catalyst future transformations that eliminate misinterpretation help exclude novel processes. Although mainly focuses on problems related trace transition metals, it also offers base more general research.

Language: Английский

Citations

1
Bench-Stable 2-Halopyridinium Ketene Hemiaminals as Reagents for the Synthesis of 2-Aminopyridine Derivatives DOI Creative Commons

Isabelle C. Bote,

Zoe A. Krevlin,

Maria Christina F. Crespo

et al.

Organic Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 20, 2024

2-Chloro-1-(1-ethoxyvinyl)pyridinium triflate and several other bench-stable

Language: Английский

Citations

1
Photoinduced Lignin C α −C β Bond Cleavage and Chemodivergent Functionalization via Iron Catalysis DOI

Yi Li,

Simeng Wu,

Yongqian Liu

et al.

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: July 22, 2024

Abstract The photocatalytic conversion of lignin into value‐added chemicals especially those functionalized molecules represent one the most important strategies for sustainable and environmental‐friendly development. Cleavage C−C bonds in under mild conditions refining useful is meaningful but challenging. Meanwhile, assembly diverse functional groups active fragments during depolymerization great Herein, using cheap iron catalysts visible light irradiation, highly selective efficient cleavage C α −C β bond realized via ligand‐to‐metal charge transfer (LMCT) hydrogen atom (HAT) processes. subsequent divergent functionalization generated fragment‐based radical intermediates enables an formation molecules. This method also effective native lignin, yielding two identified benzaldehyde monomers a total yield 8.7 wt %.

Language: Английский

Citations

0
Residual Trifluorosulfonic Acid in Amino-Functionalized Covalent Triazine Frameworks for Boosting Photocatalytic Hydrogen Evolution DOI Open Access
Chengxiao Zhao, Zhaolin Li, Weiping Xiao

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 15(1), P. 12 - 12

Published: Dec. 26, 2024

The utilization of covalent triazine frameworks (CTFs) as photocatalysts has witnessed rapid advancements in the field photocatalysis. However, presence residual components certain CTFs materials is widely ignored regards their influence on photocatalytic performance. In this study, we find that trifluorosulfonic acid (TfOH) molecules stably exist amino-functionalized CTF-NH2 framework, which enhance affinity for water. experimental results indicate TfOH elevates VB position CTF-NH2, facilitating oxidization both water and sacrificial agents. Moreover, present accelerates separation transfer photogenerated charge carriers to Pt cocatalyst. Consequently, CTF-NH2-F containing demonstrates a significant enhancement hydrogen evolution, achieving about 250 µmol over duration 3 h illumination, represents 2.5-fold increase compared observed CTF-NH2. This research underscores substantial impact residues exert

Language: Английский

Citations

0