Mechanistic and Experimental Study of the Formation of MoS2/ HKUST-1 Core-Shell Composites on MoS2 Quantum Dots with an Enhanced CO2 Adsorption Capacity

Mu, Xueliang1,2,4,5; Shuai, Liu1,2; Chen, Yipei1,2; Cheang, U. Kei4; George, Michael W.3; Wu, Tao1,2,3

2020-04

10.1021/acs.iecr.9b06729

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH   影响因子和分区

0888-5885

In this study, a new "one-pot" synthesis method was developed for the fabrication of HKUST-1 on MoS2 quantum dots (QDs) to form a core-shell structure. It is proved that the HKUST-1 self-assembles on MoS2 QDs to form a core-shell structure, which exhibits a high surface area of 1638.9 m(2)/g and enhances CO2 uptake to 4.64 mmol/g as compared with HKUST-1 alone. The density functional theory (DFT) calculations revealed that the growth of HKUST-1 on MoS2 QDs starts from the adsorption of Cu2+ cations on the MoS2 (001), followed by the Cu2+ cations bonding with trimesic acid (TMA) anions. In addition, the interactions between a CO2 molecule and the (MoS2 + SBU) (secondary building unit = SBU) unit were studied using DFT calculations to show the mechanism of CO2 adsorption on the MoS2 /HKUST-1 core-shell composite. It is found that the MoS2 QDs induce stronger electrostatic forces on CO2 than HKUST-1 alone, which subsequently contributes to enhancing the adsorption of CO2 on the MoS2 /HKUST-1 core-shell composite.

SCI ; EI

英语

其他

Engineering

Engineering, Chemical

WOS:000526421900037

AMER CHEMICAL SOC

20201708555601

Adsorption ; Carbon dioxide ; Positive ions ; Layered semiconductors ; Chemical bonds ; Semiconductor quantum dots ; Molybdenum compounds ; Nanocrystals ; Shells (structures) ; Copper compounds

Structural Members and Shapes:408.2 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Crystalline Solids:933.1

CHEMISTRY

Web of Science

1.Univ Nottingham Ningbo China, New Mat Inst, Ningbo 315100, Peoples R China
2.Univ Nottingham Ningbo China, Key Lab Clean Energy Convers Technol Ningbo, Ningbo 315100, Peoples R China
3.Key Lab Carbonaceous Waste Proc & Proc Intensific, Ningbo 315100, Peoples R China
4.South Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Guangdong, Peoples R China
5.Univ Sci & Technol China, Sch Informat Sci & Technol, Hefei 230026, Anhui, Peoples R China

Mu, Xueliang,Shuai, Liu,Chen, Yipei,et al. Mechanistic and Experimental Study of the Formation of MoS2/ HKUST-1 Core-Shell Composites on MoS2 Quantum Dots with an Enhanced CO2 Adsorption Capacity[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2020,59(13):5808-5817.

Mu, Xueliang,Shuai, Liu,Chen, Yipei,Cheang, U. Kei,George, Michael W.,&Wu, Tao.(2020).Mechanistic and Experimental Study of the Formation of MoS2/ HKUST-1 Core-Shell Composites on MoS2 Quantum Dots with an Enhanced CO2 Adsorption Capacity.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,59(13),5808-5817.

Mu, Xueliang,et al."Mechanistic and Experimental Study of the Formation of MoS2/ HKUST-1 Core-Shell Composites on MoS2 Quantum Dots with an Enhanced CO2 Adsorption Capacity".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 59.13(2020):5808-5817.