journal article·2020-07-10

Porous CuFe for Plasmon-Assisted N2 Photofixation

Tingting Hou, Lanlan Chen, Yue Xin, Wenkun Zhu, Chongyang Zhang, Wenhua Zhang, Shuquan Liang, Liangbing Wang

ACS Energy Letters· Volume 5· Issue 7
Publisher page

Abstract

Developing low-cost Cu-based photocatalysts is a promising strategy to boost catalytic activity for nitrogen (N2) photofixation, but it remains a challenge. Herein, we successfully applied porous CuFe to construct plasmon-assisted Cu-based photocatalysts in N2 photofixation via plasmonic catalysis. Surface Fe atoms were regarded as the active sites to efficiently adsorb and activate N2, while Cu frameworks generated hot electrons by surface plasmon resonance (SPR). Impressively, porous Cu96Fe4 attained an NH3 production rate of 342 μmol·gcat.–1·h–1 in N2 photofixation without any sacrificial agents. More importantly, porous Cu96Fe4 also displayed excellent stability by maintaining ∼100% initial activity after 10 cycles. Further mechanistic studies revealed that the valence state and coordination numbers of Fe atoms in porous Cu96Fe4 increased during catalytic process, indicating the formation of a surface nitrogen-containing complex. In addition, the reaction barrier significantly decreased because of the efficient polarization of N2 over Fe atoms.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Photocatalysis Techniques · Nanomaterials for catalytic reactions · Ammonia Synthesis and Nitrogen Reduction

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory for Powder Metallurgy, Key Laboratory of Electronic Packing and Advanced Functional Materials of Hunan Province, School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P.R. China

Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion and Synergetic Innovation Centre of Quantum Information & Quantum Physics, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China

State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, P.R. China

Funding

Ministry of Education of the People's Republic of China · Central South University · Natural Science Foundation of?Hunan Province · China Postdoctoral Science Foundation · National Natural Science Foundation of China

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