Efficiently and selectively photocatalytic cleavage of C-C bond by C3N4 nanosheets: Defect-enhanced engineering and rational reaction route

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924202" target="_blank" >RIV/60461373:22310/22:43924202 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0926337322006312" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0926337322006312</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcatb.2022.121690" target="_blank" >10.1016/j.apcatb.2022.121690</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Efficiently and selectively photocatalytic cleavage of C-C bond by C3N4 nanosheets: Defect-enhanced engineering and rational reaction route

Popis výsledku v původním jazyce

Photocatalytic cleavage of C-C bond in lignin under mild conditions transforms solar energy into high valueadded aromatic compounds. However, the limited understanding of cleavage mechanisms and the catalyst structure-performance relation obstruct the rational design of efficient photocatalysts. Reported herein is the construction of porous carbon nitride (C3N4) with carbon vacancies as heterogeneous photocatalysts via a sequential self-assembly and diol-induced thermal exfoliation. In the photocatalytic cleavage of ss-O-4 ether bonds, carbon vacancies in C3N4 can serve as the trapping site to suppress the recombination of photogenerated charge, and endow the C3N4 with high level of N and thus make it easier for the oxidation of C-ss-H, contributing to the enhancement of performance. Furthermore, the experimental result and in situ ATR-SEIRAS spectra unveil that O-2 could facilitate the cleavage of C-C bond but is not indispensable in this process, which brings new fundamental understanding of ss-O-4 bonds cleavage.

Název v anglickém jazyce

Efficiently and selectively photocatalytic cleavage of C-C bond by C3N4 nanosheets: Defect-enhanced engineering and rational reaction route

Popis výsledku anglicky

Photocatalytic cleavage of C-C bond in lignin under mild conditions transforms solar energy into high valueadded aromatic compounds. However, the limited understanding of cleavage mechanisms and the catalyst structure-performance relation obstruct the rational design of efficient photocatalysts. Reported herein is the construction of porous carbon nitride (C3N4) with carbon vacancies as heterogeneous photocatalysts via a sequential self-assembly and diol-induced thermal exfoliation. In the photocatalytic cleavage of ss-O-4 ether bonds, carbon vacancies in C3N4 can serve as the trapping site to suppress the recombination of photogenerated charge, and endow the C3N4 with high level of N and thus make it easier for the oxidation of C-ss-H, contributing to the enhancement of performance. Furthermore, the experimental result and in situ ATR-SEIRAS spectra unveil that O-2 could facilitate the cleavage of C-C bond but is not indispensable in this process, which brings new fundamental understanding of ss-O-4 bonds cleavage.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Catalysis B:Environment

ISSN

0926-3373

e-ISSN

1873-3883

Svazek periodika

317

Číslo periodika v rámci svazku

15 November 2022

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

nestrankovano

Kód UT WoS článku

000854099600003

EID výsledku v databázi Scopus

2-s2.0-85134540907