2026-10-11T19:01:56Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34021572 2026-09-29T06:03:29Z category_21 category_24 category_873 category_46 category_734 category_931 category_61 category_64 portal_63 item_type_6 month_year_09_2026

Confining Sn Nanocatalysts via Ship-in-a-Bottle Strategy: Local Alkaline Microenvironment Engineering for High-Selective and Durable Acidic CO₂RR to Formic Acid Xuhua Zhao (22331034) Jingying Li (1410193) Weizhou Wang (1516090) Mengqian Zhang (8940431) Haiwen Zhang (204022) Hongdong Li (137373) Lei Wang (6656) Biotechnology Evolutionary Biology Chemical Sciences not elsewhere classified Immunology Biological Sciences not elsewhere classified Information Systems not elsewhere classified Developmental Biology Cancer sup >+</ sup situ generated oh restricting proton replenishment prevents carbonate formation mesoporous shell acts hydrogen evolution reaction nanoreactor enriches k local alkaline microenvironment designing highly selective 2 </ sub durable acidic co durable electrocatalysts acidic co structured sn severe competition reduction system reached 95 powerful strategy physical barrier new path modulating capability metallic sn mchs ). flow cell fabricated via electrocatalytic microenvironment continuous operation catalytic activity bottle strategy bottle method 3 %, 1 %. Acidic CO₂ electroreduction (CO₂RR) prevents carbonate formation but suffers from severe competition with the hydrogen evolution reaction. Herein, a nanoreactor-structured Sn@MCHS catalyst is fabricated via a ship-in-a-bottle method, synergizing the catalytic activity of metallic Sn with the microenvironment-modulating capability of hollow mesoporous carbon spheres (MCHS). This mesoporous shell acts as a physical barrier, restricting proton replenishment and retaining the in situ generated OH^–, thereby forming a local alkaline microenvironment. The nanoreactor enriches K⁺ and stabilizes *OCHO. In the acidic CO₂ reduction system, the FE of the catalyst in an H-type cell reached 90.3%, and in a flow cell it reached 95.1%. It also demonstrated excellent stability for continuous operation for up to 96 h. This study established nanoscale confinement as a powerful strategy for constructing an electrocatalytic microenvironment, opening up a new path for designing highly selective and durable electrocatalysts. 2026-09-29T00:00:00Z Text Journal contribution 10.1021/acs.nanolett.6c02682.s001 https://figshare.com/articles/journal_contribution/Confining_Sn_Nanocatalysts_via_Ship-in-a-Bottle_Strategy_Local_Alkaline_Microenvironment_Engineering_for_High-Selective_and_Durable_Acidic_CO_sub_2_sub_RR_to_Formic_Acid/34021572 CC BY-NC 4.0