Synergistic Enhancement of Electrocatalytic Nitrogen Reduction Over Boron Nitride Quantum Dots Decorated Nb 2 CT x ‐MXene

Small ◽  
2021 ◽  
pp. 2102363
Author(s):  
Ke Chu ◽  
Xingchuan Li ◽  
Qingqing Li ◽  
Yali Guo ◽  
Hu Zhang
Keyword(s):  
Quantum Dots ◽  
Boron Nitride ◽  
Nitrogen Reduction ◽  
Synergistic Enhancement

Efficient Full-Color Boron Nitride Quantum Dots for Thermostable Flexible Displays

ACS Nano ◽  
2021 ◽  
Author(s):  
Yamei Ding ◽  
Ping He ◽  
Shaohan Li ◽  
Bo Chang ◽  
Shengli Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Boron Nitride ◽  
Flexible Displays ◽  
Full Color

Determination of nickel(II) via quenching of the fluorescence of boron nitride quantum dots

2017 ◽  
Vol 184 (10) ◽  
pp. 4217-4223 ◽  
Author(s):  
Qiuhong Yao ◽  
Yufeng Feng ◽  
Mingcong Rong ◽  
Shaogui He ◽  
Xi Chen
Keyword(s):  
Quantum Dots ◽  
Boron Nitride ◽  
Determination Of Nickel

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.

Graphene–boron nitride hybrid-supported single Mo atom electrocatalysts for efficient nitrogen reduction reaction

2019 ◽  
Vol 7 (25) ◽  
pp. 15173-15180 ◽  
Author(s):  
Yan Huang ◽  
Tongtong Yang ◽  
Li Yang ◽  
Ran Liu ◽  
Guozhen Zhang ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Reduction Reaction ◽  
Nitrogen Reduction

A monodispersed Mo atom supported by a defective borocarbonitride monolayer has been shown to be a durable, efficient and selective N2 reduction electrocatalyst.

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