材料科学
掺杂剂
吸附
二硫化钼
兴奋剂
化学工程
钴
镍
碳纤维
钼
基质(水族馆)
纳米技术
无机化学
有机化学
冶金
复合材料
光电子学
化学
工程类
地质学
海洋学
复合数
作者
Scott Bamonte,Shubhashish Shubhashish,Harshul S. Khanna,Seth Shuster,Samantha Joy B. Rubio,Steven L. Suib,S. P. Alpay,Sanjubala Sahoo
标识
DOI:10.1021/acsami.2c01820
摘要
Carbon capture and storage (CCS) technologies have the potential for reducing greenhouse gas emissions and creating clean energy solutions. One of the major aspects of the CCS technology is designing energy-efficient adsorbent materials for carbon dioxide capture. In this research, using a combination of first-principles theory, synthesis, and property measurements, we explore the CO2 gas adsorption capacity of MoS2 sheets via doping with iron, cobalt, and nickel. We show that substitutional dopants act as active sites for CO2 adsorption. The adsorption performance is determined to be dependent on the type of dopant species as well as its concentration. Nickel-doped MoS2 is found to be the best adsorbent for carbon capture with a relatively high gas adsorption capacity compared to pure MoS2 and iron- and cobalt-doped MoS2. Specifically, Brunauer-Emmett-Teller (BET) measurements show that 8 atom % Ni-MoS2 has the highest surface area (51 m2/g), indicating the highest CO2 uptake relative to the other concentrations and other dopants. Furthermore, we report that doping could lead to different magnetic solutions with changing electronic structures where narrow band gaps and the semimetallic tendency of the substrate are observed and can have an influence on the CO2 adsorption ability of MoS2. Our results provide a key strategy to the characteristic tendencies for designing highly active and optimized MoS2-based adsorbent materials utilizing the least volume of catalysts for CO2 capture and conversion.
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