2026-10-12T15:03:25Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34018143 2026-09-28T18:06:34Z category_21 category_873 category_46 category_69 category_132 category_133 portal_63 item_type_6 month_year_09_2026

Surface-Treated InP Quantum Dots for Selective CO₂ Photoreduction Le-Chun Li (18367976) Chia-Ying Wu (146233) Tsukasa Takanashi (9252932) Shih-Wen Tseng (3245577) Tetsu Yonezawa (1620343) Akira Yamakata (1270491) Chen-Hao Yeh (2276929) Ying-Chih Pu (1371906) Biotechnology Chemical Sciences not elsewhere classified Immunology Inorganic Chemistry Infectious Diseases Plant Biology treated indium phosphide solar fuel production semiconductor quantum dots injection method followed hydrogenation toward ch hydrofluoric acid post exposed crystal facets prolongs carrier lifetimes surface atomic structure surface atomic arrangement 2 </ sub photoreduction photocatalytic co photoreduction selectivity carrier trapping work establishes tetrahedral morphologies selective co reaction pathways promising strategy product selectivity electron pathway design principle controlled hot Photocatalytic CO₂ reduction over semiconductor quantum dots (QDs) offers a promising strategy for solar fuel production, yet the influence of surface atomic structure on reaction pathways and product selectivity remains poorly understood. Herein, surface-treated indium phosphide (InP) QDs with tetrapod and tetrahedral morphologies were synthesized through a temperature-controlled hot-injection method followed by hydrofluoric acid post-treatment. Removal of the native surface oxide layer effectively suppresses charge-carrier trapping and prolongs carrier lifetimes, resulting in significantly enhanced photocatalytic CO₂ reduction activity. More importantly, the product selectivity is governed by the exposed crystal facets: (110)-oriented tetrapod preferentially produces CO through a two-electron pathway, whereas (111)-oriented tetrahedron promotes further hydrogenation toward CH₄. This work establishes a direct structure–reactivity relationship between surface atomic arrangement and CO₂ photoreduction selectivity, providing a design principle for environmentally benign QD photocatalysts for solar fuel production. 2026-09-28T00:00:00Z Text Journal contribution 10.1021/acs.jpclett.6c02570.s001 https://figshare.com/articles/journal_contribution/Surface-Treated_InP_Quantum_Dots_for_Selective_CO_sub_2_sub_Photoreduction/34018143 CC BY-NC 4.0