scholarly journals Graphene Quantum Dots Doped PVDF(TBT)/PVP(TBT) Fiber Film with Enhanced Photocatalytic Performance

2020 ◽  
Vol 10 (2) ◽  
pp. 596 ◽  
Author(s):  
Fubao Zhang ◽  
Chen Yang ◽  
Xiao-Xiong Wang ◽  
Ru Li ◽  
Zhong Wan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Composite Film ◽  
Hydrothermal Method ◽  
Polyvinylidene Fluoride ◽  
Photocatalytic Performance ◽  
Graphene Quantum Dots ◽  
Polyvinyl Pyrrolidone ◽  
Tetrabutyl Titanate ◽  
Photocatalytic Efficiency ◽  
Response Range

We report the fabrication of polyvinylidene fluoride (tetrabutyl titanate)/polyvinyl pyrrolidone ((tetrabutyl titanate))-graphene quantum dots [PVDF(TBT)/PVP(TBT)-GQDs] film photocatalyst with enhanced photocatalytic performance. The polyvinylidene fluoride (tetrabutyl titanate)/polyvinyl pyrrolidone ((tetrabutyl titanate)) [PVDF(TBT)/PVP(TBT)] film was first prepared with a dual-electrospinning method and then followed by attaching graphene quantum dots (GQDs) to the surface of the composite film through a hydrothermal method. Later, part of the PVP in the composite film was dissolved by a hydrothermal method. As a result, a PVDF(TBT)/PVP(TBT)-GQDs film photocatalyst with a larger specific surface area was achieved. The photocatalytic degradation behavior of the PVDF(TBT)/PVP(TBT)-GQDs film photocatalyst was examined by using Rhodamine B as the target contaminant. The PVDF(TBT)/PVP(TBT)-GQDs photocatalyst showed a higher photocatalytic efficiency than PVDF(TBT)-H2O, PVDF(TBT)/PVP(TBT)-H2O, and PVDF(TBT)-GQDs, respectively. The enhanced photocatalytic efficiency can be attributed to the broader optical response range of the PVDF(TBT)/PVP(TBT)-GQDs photocatalyst, which makes it useful as an effective photocatalyst under white light irradiation.

Graphene quantum dots modified ZnO + Cu heterostructure photocatalysts with enhanced photocatalytic performance

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106508-106515 ◽  
Author(s):  
Yan Li ◽  
Lifeng Wang ◽  
Juan Ge ◽  
Jun Wang ◽  
Qiyao Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spin Coating ◽  
Photocatalytic Performance ◽  
Graphene Quantum Dots ◽  
Annealing Process ◽  
Surface Modified

GQDs surface modified ZnO + Cu heterostructure photocatalysts was prepared via a simple spin-coating and annealing process, which exhibits enhanced photocatalytic performance.

scholarly journals The Synergistic Effect of Pyridinic Nitrogen and Graphitic Nitrogen of Nitrogen-Doped Graphene Quantum Dots for Enhanced TiO2 Nanocomposites’ Photocatalytic Performance

Catalysts ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 438 ◽  
Author(s):  
Fei Li ◽  
Ming Li ◽  
Yi Luo ◽  
Ming Li ◽  
Xinyu Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Performance ◽  
Uv Light ◽  
Graphene Quantum Dots ◽  
Hydrothermal Route ◽  
Ammonia Water ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Pyridinic N

In this study, nitrogen-doped graphene quantum dots (N-GQDs) and a TiO2 nanocomposite were synthesized using a simple hydrothermal route. Ammonia water was used as a nitrogen source to prepare the N-GQDs. When optically characterized by UV-vis, N-GQDs reveal stronger absorption peaks in the range of ultraviolet (UV) light than graphene quantum dots (GQDs). In comparison with GQDs/TiO2 and pure TiO2, the N-GQDs/TiO2 have significantly improved photocatalytic performance. In particular, it was found that, when the added amount of ammonia water was 50 mL, the content of pyridinic N and graphitic N were as high as 22.47% and 31.44%, respectively. Most important, the photocatalytic activity of N-GQDs/TiO2-50 was about 95% after 12 min. The results illustrated that pyridinic N and graphitic N play a significant role in photocatalytic performance.

Boosting the energy storage performance of V2O5 nanosheets by intercalating conductive graphene quantum dots

Nanoscale ◽  
2020 ◽  
Vol 12 (32) ◽  
pp. 16944-16955
Author(s):  
Akhilesh Babu Ganganboina ◽  
Enoch Y. Park ◽  
Ruey-An Doong
Keyword(s):  
Quantum Dots ◽  
Energy Storage ◽  
Electrochemical Properties ◽  
Hydrothermal Method ◽  
High Performance ◽  
Graphene Quantum Dots ◽  
Storage Performance

V2O5 nanosheets have been nano-engineered with 0D graphene quantum dots via a hydrothermal method, their outstanding electrochemical properties for high-performance supercapacitors are demonstrated.

Graphene quantum dots modified Ag3PO4 for facile synthesis and the enhanced photocatalytic performance

2018 ◽  
Vol 6 (3) ◽  
pp. 255-269 ◽  
Author(s):  
Zhigang Chen ◽  
Zhenzhen Zhao ◽  
Jinyuan Liu ◽  
Xingwang Zhu ◽  
Liang Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Performance ◽  
Graphene Quantum Dots ◽  
Facile Synthesis
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