Journal
SOLAR RRL
Volume 5, Issue 2, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.202000411
Keywords
cohybridization; graphene; interfacial electronic coupling; mixed conductive nanosheets; photocatalyst
Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [NRF-2017R1A5A1015365]
- Korea government (MSIP) [NRF-2020R1A2C3008671]
- Technology Innovation Program-Alchemist Project - Ministry of Trade, Industry & Energy (MOTIE, Korea) [20012315]
- MOST
- POSTECH
- Korea Evaluation Institute of Industrial Technology (KEIT) [20012315] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [4199990514159] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The homogeneous colloidal mixture of conductive metal oxide nanosheet (NS) and reduced graphene oxide (rGO) NS provides a universal way to optimize the functionality of semiconductor nanocrystals in photocatalysts. The self-assembly between CdS quantum dots (QDs) and RuO2/rGO NSs yields strongly coupled ternary nanohybrids with enhanced photocatalytic activity and increased porosity, showing notably higher photocatalytic activities for visible-light-induced H-2 evolution and photocurrent generation. Co-hybridization with complementary inorganic and graphene NSs can serve as an efficient methodology to explore high-performance catalyst materials.
Using the homogeneous colloidal mixture of conductive metal oxide nanosheet (NS) and reduced graphene oxide (rGO) NS as hybridization matrices provides universal way of optimizing the photocatalyst functionality of semiconductor nanocrystals. A self-assembly between CdS quantum dots (QDs) and RuO2/rGO NSs yields strongly coupled ternary nanohybrids with enhanced photocatalytic activity and increased porosity. Even with its lower RuO2 content, the ternary CdS-RuO2/rGO nanohybrid exhibits notably higher photocatalytic activities for visible-light-induced H-2 evolution and photocurrent generation than binary CdS-RuO2/rGO homologues, underscoring the synergetic hybridization effect of flexible rGO and hydrophilic RuO2 NSs. In comparison with single RuO2/rGO NSs, their homogeneous mixture can play better roles of photosensitizers and cocatalysts, which is mainly responsible for remarkable improvement of photocatalytic activity upon the cohybridization with mixed RuO2/rGO NSs. The current study underscores that cohybridization with complementary inorganic and graphene NSs can provide an efficient and economically feasible methodology to explore novel high-performance catalyst materials.
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