Interfacial engineering of CuFeS2 quantum dots via platinum decoration with enhanced Cr(VI) reduction dynamics under UV-Vis-NIR radiation

Shangguan，Yangzi1,2; Zheng，Renji1; Ge，Qiuyue1,2; Feng，Xuezhen1; Wang，Ranhao1; Zhou，Yuanhao1; Luo，Siyuan1; Duan，Lele3; Lin，Jia2; Chen，Hong1

2022-01-05

10.1016/j.jhazmat.2021.126701

JOURNAL OF HAZARDOUS MATERIALS   影响因子和分区

0304-3894

1873-3336

Configuring reactive and stable catalytic interfaces is crucial to design efficient photocatalysts for Cr(VI) reduction. Herein, via the platinum decoration approach based on interfacial engineering, we developed an effective catalytic interface within novel semiconducting chalcopyrite quantum dots (Pt/CuFeS QDs). Benefiting from the catalytic merits of the Pt modulated interfacial structure and electronic structure, Pt/CuFeS QDs show a broader light absorption capability extending to near-infrared radiation (NIR) range with superior carriers separation performance and faster charge transfer efficiency, which delivers a three-folder faster photocatalytic Cr(VI) reduction efficiency comparing to the original CuFeS QDs. Density functional theory (DFT) calculations unravel that Pt atoms prefer to be anchored with the surface S atoms to form a stable interfacial structure with faster electron transfer and Cr(VI) reduction dynamics. This work demonstrates that platinum decoration based on interfacial engineering is an effective strategy to simultaneously modulate the band structure and accelerate the interfacial reaction dynamics for semiconductor photocatalysts, which paves the way for designing highly efficient photocatalysts for light-driven environmental and energy engineering applications.

Cr(VI) reduction Interfacial engineering Photocatalysts UV-Vis-NIR

SCI ; EI

英语

第一 ; 通讯

WOS:000696922800003

20213110706266

Charge transfer ; Chromium compounds ; Copper compounds ; Density functional theory ; Design for testability ; Dynamics ; Electronic structure ; Infrared radiation ; Iron compounds ; Light absorption ; Nanocrystals ; Photocatalysts ; Platinum ; Semiconductor quantum dots

Precious Metals:547.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Crystalline Solids:933.1

ENGINEERING

2-s2.0-85111501569

Scopus

1.State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control,Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Physics,Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power,Shanghai University of Electric Power,Shanghai,200090,China
3.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China

Shangguan，Yangzi,Zheng，Renji,Ge，Qiuyue,et al. Interfacial engineering of CuFeS2 quantum dots via platinum decoration with enhanced Cr(VI) reduction dynamics under UV-Vis-NIR radiation[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,421.

Shangguan，Yangzi.,Zheng，Renji.,Ge，Qiuyue.,Feng，Xuezhen.,Wang，Ranhao.,...&Chen，Hong.(2022).Interfacial engineering of CuFeS2 quantum dots via platinum decoration with enhanced Cr(VI) reduction dynamics under UV-Vis-NIR radiation.JOURNAL OF HAZARDOUS MATERIALS,421.

Shangguan，Yangzi,et al."Interfacial engineering of CuFeS2 quantum dots via platinum decoration with enhanced Cr(VI) reduction dynamics under UV-Vis-NIR radiation".JOURNAL OF HAZARDOUS MATERIALS 421(2022).