Hexagonal Boron Nitride Quantum Dots as a Superior Hole Extractor for Efficient Charge Separation in WO3-Based Photoelectrochemical Water Oxidation

2019 ◽  
Vol 2 (10) ◽  
pp. 7457-7466 ◽  
Author(s):  
Manoj Kumar Mohanta ◽  
Tushar Kanta Sahu ◽  
Devipriya Gogoi ◽  
Nageswara Rao Peela ◽  
Mohammad Qureshi
Keyword(s):  
Quantum Dots ◽  
Boron Nitride ◽  
Water Oxidation ◽  
Charge Separation ◽  
Hexagonal Boron Nitride ◽  
Efficient Charge ◽  
Photoelectrochemical Water Oxidation

scholarly journals Efficient charge separation and transfer of a TaON/BiVO4 heterojunction for photoelectrochemical water splitting

RSC Advances ◽  
2021 ◽  
Vol 11 (22) ◽  
pp. 13269-13273
Author(s):  
Na Li ◽  
Yi Jiang ◽  
Xiaodi Wang ◽  
Chongyang Hu ◽  
Wenchao Jiang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Charge Separation ◽  
Photoelectrochemical Water Splitting ◽  
Significant Enhancement ◽  
Efficient Charge ◽  
Photoelectrochemical Water Oxidation

TaON/BiVO4 heterojunction electrodes exhibited significant enhancement in the photoelectrochemical water oxidation.

scholarly journals Regulation of Ferroelectric Polarization to Achieve Efficient Charge Separation and Transfer in Particulate RuO 2 /BiFeO 3 for High Photocatalytic Water Oxidation Activity

Small ◽  
2021 ◽  
Vol 17 (3) ◽  
pp. 2007044
Author(s):  
Jafar H. Shah ◽  
Biaohong Huang ◽  
Ahmed M. Idris ◽  
Yong Liu ◽  
Anum S. Malik ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Charge Separation ◽  
Ferroelectric Polarization ◽  
Oxidation Activity ◽  
Efficient Charge

scholarly journals Improved Charge Separation in WO3/CuWO4 Composite Photoanodes for Photoelectrochemical Water Oxidation

Materials ◽  
2016 ◽  
Vol 9 (5) ◽  
pp. 348 ◽  
Author(s):  
Danping Wang ◽  
Prince Bassi ◽  
Huan Qi ◽  
Xin Zhao ◽  
Gurudayal ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Charge Separation ◽  
Photoelectrochemical Water Oxidation

Tuning the electronic and optical properties of hexagonal boron-nitride nanosheet by inserting graphene quantum dots

2018 ◽  
Vol 32 (06) ◽  
pp. 1850084 ◽  
Author(s):  
Yi-Min Ding ◽  
Jun-Jie Shi ◽  
Min Zhang ◽  
Meng Wu ◽  
Hui Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Graphene Quantum Dots ◽  
Band Gaps ◽  
Hybrid Structures ◽  
Electronic And Optical Properties ◽  
Boron Nitride Nanosheet ◽  
Optoelectronic Nanodevices

It is difficult to integrate two-dimensional (2D) graphene and hexagonal boron-nitride (h-BN) in optoelectronic nanodevices, due to the semi-metal and insulator characteristic of graphene and h-BN, respectively. Using the state-of-the-art first-principles calculations based on many-body perturbation theory, we investigate the electronic and optical properties of h-BN nanosheet embedded with graphene dots. We find that C atom impurities doped in h-BN nanosheet tend to phase-separate into graphene quantum dots (QD), and BNC hybrid structure, i.e. a graphene dot within a h-BN background, can be formed. The band gaps of BNC hybrid structures have an inverse relationship with the size of graphene dot. The calculated optical band gaps for BNC structures vary from 4.71 eV to 3.77 eV, which are much smaller than that of h-BN nanosheet. Furthermore, the valence band maximum is located in C atoms bonded to B atoms and conduction band minimum is located in C atoms bonded to N atoms, which means the electron and hole wave functions are closely distributed around the graphene dot. The bound excitons, localized around the graphene dot, determine the optical spectra of the BNC hybrid structures, in which the exciton binding energies decrease with increase in the size of graphene dots. Our results provide an important theoretical basis for the design and development of BNC-based optoelectronic nanodevices.

Fabrication of Graphene Quantum Dots and Hexagonal Boron Nitride Nanocomposites for Fluorescent Cell Imaging

2013 ◽  
Vol 9 (10) ◽  
pp. 1679-1685 ◽  
Author(s):  
Juan Peng ◽  
Sheng Wang ◽  
Peng-Hui Zhang ◽  
Li-Ping Jiang ◽  
Jian-Jun Shi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Boron Nitride ◽  
Cell Imaging ◽  
Hexagonal Boron Nitride ◽  
Graphene Quantum Dots ◽  
Fluorescent Cell

Vertically aligned 2D carbon doped boron nitride nanofilms for photoelectrochemical water oxidation

2020 ◽  
Vol 8 (26) ◽  
pp. 13059-13064 ◽  
Author(s):  
Yuanxing Fang ◽  
Ivan S. Merenkov ◽  
Xiaochun Li ◽  
Junkang Xu ◽  
Sen Lin ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Water Oxidation ◽  
Carbon Doped ◽  
Conductive Glass ◽  
Vertically Aligned ◽  
Improved Performance ◽  
Photoelectrochemical Water Oxidation

2D carbon-doped boron nitride nanofilms are vertically aligned on conductive glass to create a photoanode for solar-driven water oxidation. This photoanode shows an improved performance compared to that of a powder based photoanode.

Modulating Charge Separation with Hexagonal Boron Nitride Mediation in Vertical Van der Waals Heterostructures

2020 ◽  
Vol 12 (23) ◽  
pp. 26213-26221 ◽  
Author(s):  
Christy Roshini Paul Inbaraj ◽  
Roshan Jesus Mathew ◽  
Rajesh Kumar Ulaganathan ◽  
Raman Sankar ◽  
Monika Kataria ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Charge Separation ◽  
Hexagonal Boron Nitride ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures

In situ synthesis of FeP-decorated Ti–Fe2O3: an effective strategy to improve the interfacial charge transfer in the photoelectrochemical water oxidation reaction

2019 ◽  
Vol 9 (20) ◽  
pp. 5812-5818 ◽  
Author(s):  
Qijing Bu ◽  
Shuo Li ◽  
Qiannan Wu ◽  
Yanhong Lin ◽  
Dejun Wang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Oxidation ◽  
Oxidation Reaction ◽  
In Situ Synthesis ◽  
Effective Strategy ◽  
Interfacial Charge Transfer ◽  
Efficient Charge ◽  
Interfacial Charge ◽  
Photoelectrochemical Water Oxidation

The unprecedented FeP/Ti–Fe2O3 possesses the advantages of efficient charge transfer in the bulk photoanode and at the interface of the photoanode and the electrolyte.

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