Enhancing the Efficiency of DSSCs by the Modification of TiO 2 Photoanodes using N, F and S, co-doped Graphene Quantum Dots

Kundu, Sumana; Sarojinijeeva, P.; Karthick, R.; Anantharaj, Gopalraman; Saritha, Gachumale; Bera, Rajesh; Anandan, Sambandam; Patra, Amitava; Ragupathy, P.; Selvaraj, M.; Jeyakumar, D.; Pillai, Karthik

doi:10.1016/j.electacta.2017.05.024

Cited by 87 publications

(44 citation statements)

References 35 publications

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“…This hybrid counter electrode material was used in DSSC which achieved an impressive PCE of 8.05% which is much larger than the reference counter electrode (7.44%). Kundu et al 216 revealed an upgraded PCE of 11.7% AE 0.2 and a ll factor (FF) of 71% for DSSCs with a functioning area of 0.16 cm 2 subsequent to altering the TiO 2 photo-anode with size-specic (ca. 2 nm) N, F, S-codoped GQDs (NFS-GQDs).…”

Section: Energy Conversionmentioning

confidence: 99%

Graphene quantum dot based materials for sensing, bio-imaging and energy storage applications: a review

et al. 2020

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Section: Energy Conversionmentioning

confidence: 99%

Graphene quantum dot based materials for sensing, bio-imaging and energy storage applications: a review

et al. 2020

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“…In recent years, the applications of GQDs in drug delivery [123][124][125][126][127], sensors [128][129][130][131][132][133][134], bio-imaging [10,63,[135][136][137][138][139][140], magnetic hyperthermia [141][142][143], photothermal therapy [144][145][146][147][148], antibacterial [145,149,150], catalyst [69,[151][152][153][154][155], environmental protection [38,156,157], and energy [158][159][160][161][162][163] has made remarkable accomplishment. In order to better apply GQDs to drug delivery, some researchers had used density functional theory (DFT) calculations [164]…”

Section: Applications Of Gqds In Drug Deliverymentioning

confidence: 99%

Synthesis of graphene quantum dots and their applications in drug delivery

et al. 2020

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This review focuses on the recent advances in the synthesis of graphene quantum dots (GQDs) and their applications in drug delivery. To give a brief understanding about the preparation of GQDs, recent advances in methods of GQDs synthesis are first presented. Afterwards, various drug delivery-release modes of GQDs-based drug delivery systems such as EPR-pH delivery-release mode, ligand-pH delivery-release mode, EPR-Photothermal delivery-Release mode, and Core/Shell-photothermal/magnetic thermal delivery-release mode are reviewed. Finally, the current challenges and the prospective application of GQDs in drug delivery are discussed.

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“…In the last few decades, all dimensions (0‐D, 1‐D, 2‐D and 3‐D) of carbon based materials have been widely explored for various energy applications like storage and conversion systems either by surface functionalization or doping of hetero elements or both . The attractive “0‐D” GQDs with tunable size, heteroatom doped GQDs and doped GQDs supported by some other conducting materials like polypyrrole and GNRs have been widely used in DSSCs, Li–ion batteries and oxygen reduction reaction (ORR) .…”

Section: Figurementioning

confidence: 99%

Role of Specific N-Containing Active Sites in Interconnected Graphene Quantum Dots for the Enhanced Electrocatalytic Activity towards Oxygen Evolution Reaction

et al. 2017

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Electrochemical water oxidation is a dynamic and basal approach for several energy conversion technologies such as solar fuels and metal–air batteries. Herein, we report a novel ‘nitrogen’ (N) enriched interconnected graphene quantum dots (C‐GQDs) as efficient oxygen evolution electrocatalyst, a potential candidate to replace the noble metal OER electrocatalysts. Interestingly, C‐GQDs deliver a current density of 10 mAcm‐2 at 350 mV, a small Tafel slope of 55 mV/dec and outstanding durability which is much superior to the state‐of‐the‐art precious RuO2. More precisely, the unexpected behaviour of graphene quantum dots towards oxygen evolution reaction (OER) is attributed to the interconnection through N‐rich framework (25 %) among the discrete particles. Predominantly, in the pyridine N‐oxide, N acts as nucleophilic site and pyridinic N develops p‐ type doping, responsible for enhanced the OER electrocatalytic activity. The co‐existence of both pyridinic N and pyridine N‐oxide N induces charge redistribution through π‐π delocalization to reduce the *OOH thermodynamic energy barrier. We hope that our study will encourage to develop more efficient electrocatalysts with more effective doping or surface functionalized structure by understanding the dopant nature.

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Enhancing the Efficiency of DSSCs by the Modification of TiO 2 Photoanodes using N, F and S, co-doped Graphene Quantum Dots

Cited by 87 publications

References 35 publications

Graphene quantum dot based materials for sensing, bio-imaging and energy storage applications: a review

Graphene quantum dot based materials for sensing, bio-imaging and energy storage applications: a review

Synthesis of graphene quantum dots and their applications in drug delivery

Role of Specific N-Containing Active Sites in Interconnected Graphene Quantum Dots for the Enhanced Electrocatalytic Activity towards Oxygen Evolution Reaction

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