Study of luminescent method for assessing between carbon dioxide absorption ability and surface defect of lithium silicate2

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K23653
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0502:Inorganic/coordination chemistry, analytical chemistry, inorganic materials chemistry, energy-related chemistry, and related fields
• Research Institution: Chuo University
• Principal Investigator: Watanabe Mizuki 中央大学, 理工学部, 助教 (60847987)
• Project Period (FY): 2019-08-30 – 2021-03-31
• Keywords: リチウムケイ酸塩 / 表面欠陥 / 発光特性 / 二酸化炭素吸収

Outline of Final Research Achievements

We aim to develop luminescence method for assessing relationship between the carbon dioxide absorption ability of lithium silicates and the surface defect leading to luminescence. The luminescence properties were successfully characterized under only carbon dioxide atmosphere by the usage of a unique closed cell. This study revealed that the surface defects on the lithium silicates effected on the luminescence properties and the luminescence properties changed with the carbon dioxide absorption.

Free Research Field

無機材料化学

Academic Significance and Societal Importance of the Research Achievements

本研究は、リチウムケイ酸塩の二酸化炭素吸着に伴う蛍光特性の変化を観察することで表面欠陥と二酸化炭素吸着の関係性を定量的・定性的に評価しようとする今までにない試みである。最終的には二酸化炭素吸着による表面欠陥の変化を二酸化炭素吸収反応進行度毎に(in-situ）観察可能にする。本研究による新評価法の確立は、リチウムケイ酸塩の二酸化炭素吸収素材としての機能性を高める材料設計指針の提示に向けた大きな一歩である。