Affiliation:
1. College of Ecology and Environment Co‐Innovation Center for the Sustainable Forestry in Southern China Nanjing Forestry University Nanjing 210037 China
2. National Positioning Observation Station of Hung‐tse Lake Wetland Ecosystem in Jiangsu Province Hongze 223100 China
3. The Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Normal University Wuhu 241000 China
Abstract
AbstractRational tailoring of the local coordination environment of single atoms has demonstrated a significant impact on the electronic state and catalytic performance, but the development of catalysts beyond noble/transition metals is profoundly significant and highly desired. Herein, the main‐group metal indium (In) single atom is immobilized on sulfur‐doped porous carbon nitride nanosheets (In@CNS) in the form of three nitrogen atoms coordinated with one sulfur atom (In–N3−S). Both theoretical calculations and advanced characterization investigations clearly elucidated that the single‐atomic In–N3–S structures on In@CNS are powerful in promoting the dissociation of excitons into more free carriers as well as the charge separation, synergistically elevating electron concentration by 2.19 times with respect to pristine CNS. Meanwhile, the loading of In single atoms on CNS is responsible for altering electronic structure and lowering the Gibbs free energy for hydrogen adsorption. Consequently, the optimized In@CNS‐5.0 exhibited remarkable photocatalytic performance, remarkable water‐splitting and tetracycline hydrochloride degradation. The H2 production achieved to 10.11 mmol h−1g−1 with a notable apparent quantum yield of 19.70% at 400 nm and remained at 10.40% at 420 nm. These findings open a new perspective for in‐depth comprehending the effect of the main‐group metal single‐atom coordination environment on promoting photocatalytic performance.
Funder
National Natural Science Foundation of China
Cited by
9 articles.
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