Synergistically Coupling Black Phosphorus Quantum Dots with MnO 2 Nanosheets for Efficient Electrochemical Nitrogen Reduction Under Ambient Conditions

Small ◽  
2020 ◽  
Vol 16 (18) ◽  
pp. 1907091 ◽  
Author(s):  
Chuang Wang ◽  
Jian Gao ◽  
Jing‐Geng Zhao ◽  
Du‐Juan Yan ◽  
Xiao‐Dong Zhu
Keyword(s):  
Quantum Dots ◽  
Black Phosphorus ◽  
Ambient Conditions ◽  
Nitrogen Reduction ◽  
Black Phosphorus Quantum Dots

scholarly journals Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application

2020 ◽  
Vol 6 (15) ◽  
pp. eaay5661 ◽  
Author(s):  
Xiu Gong ◽  
Li Guan ◽  
Qingwei Li ◽  
Yan Li ◽  
Tao Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Perovskite Solar Cells ◽  
Lone Pair ◽  
Precursor Solution ◽  
Black Phosphorus ◽  
Thin Layers ◽  
Ambient Conditions ◽  
Inorganic Perovskite ◽  
Coulombic Repulsion ◽  
Black Phosphorus Quantum Dots

Black phosphorus quantum dots (BPQDs) are proposed as effective seed-like sites to modulate the nucleation and growth of CsPbI2Br perovskite crystalline thin layers, allowing an enhanced crystallization and remarkable morphological improvement. We reveal that the lone-pair electrons of BPQDs can induce strong binding between molecules of the CsPbI2Br precursor solution and phosphorus atoms stemming from the concomitant reduction in coulombic repulsion. The four-phase transition during the annealing process yields an α-phase CsPbI2Br stabilized by BPQDs. The BPQDS/CsPbI2Br core-shell structure concomitantly reinforces a stable CsPbI2Br crystallite and suppresses the oxidation of BPQDs. Consequently, a power conversion efficiency of 15.47% can be achieved for 0.7 wt % BPQDs embedded in CsPbI2Br film-based devices, with an enhanced cell stability, under ambient conditions. Our finding is a decisive step in the exploration of crystallization and phase stability that can lead to the realization of efficient and stable inorganic perovskite solar cells.

Sequentially Triggered Delivery System of Black Phosphorus Quantum Dots with Surface Charge-Switching Ability for Precise Tumor Radiosensitization

ACS Nano ◽  
2018 ◽  
Vol 12 (12) ◽  
pp. 12401-12415 ◽  
Author(s):  
Leung Chan ◽  
Pan Gao ◽  
Wenhua Zhou ◽  
Chaoming Mei ◽  
Yanyu Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Surface Charge ◽  
Delivery System ◽  
Black Phosphorus ◽  
Black Phosphorus Quantum Dots

Non-contact, controlled and moisture triggered black phosphorus quantum dots/PVA film for transient electronics applications

2021 ◽  
Vol 290 ◽  
pp. 129477
Author(s):  
Naveen Bokka ◽  
Vivek Adepu ◽  
Venkatarao Selamneni ◽  
Parikshit Sahatiya
Keyword(s):  
Quantum Dots ◽  
Black Phosphorus ◽  
Transient Electronics ◽  
Black Phosphorus Quantum Dots

scholarly journals Tea polyphenol modified, photothermal responsive and ROS generative black phosphorus quantum dots as nanoplatforms for promoting MRSA infected wounds healing in diabetic rats

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Shibo Xu ◽  
Linna Chang ◽  
Yanan Hu ◽  
Xingjun Zhao ◽  
Shuocheng Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Wound Healing ◽  
Bacterial Infections ◽  
Photocatalytic Property ◽  
Black Phosphorus ◽  
Control Group ◽  
Ros Generation ◽  
Diabetic Patients ◽  
Photocatalytic Ability ◽  
Black Phosphorus Quantum Dots

Abstract Background Healing of MRSA (methicillin-resistant Staphylococcus aureus) infected deep burn wounds (MIDBW) in diabetic patients remains an obstacle but is a cutting-edge research problem in clinical science. Surgical debridement and continuous antibiotic use remain the primary clinical treatment for MIDBW. However, suboptimal pharmacokinetics and high doses of antibiotics often cause serious side effects such as fatal complications of drug-resistant bacterial infections. MRSA, which causes wound infection, is currently a bacterium of concern in diabetic wound healing. In more severe cases, it can even lead to amputation of the patient's limb. The development of bioactive nanomaterials that can promote infected wound healing is significant. Results The present work proposed a strategy of using EGCG (Epigallocatechin gallate) modified black phosphorus quantum dots (BPQDs) as therapeutic nanoplatforms for MIDBW to achieve the synergistic functions of NIR (near-infrared)-response, ROS-generation, sterilization, and promoting wound healing. The electron spin resonance results revealed that EGCG-BPQDs@H had a more vital photocatalytic ability to produce singlet oxygen than BPQDs@H. The inhibition results indicated an effective bactericidal rate of 88.6% against MRSA. Molecular biology analysis demonstrated that EGCG-BPQDs significantly upregulated CD31 nearly fourfold and basic fibroblast growth factor (bFGF) nearly twofold, which were beneficial for promoting the proliferation of vascular endothelial cells and skin epidermal cells. Under NIR irradiation, EGCG-BPQDs hydrogel (EGCG-BPQDs@H) treated MIDBW area could rapidly raise temperature up to 55 °C for sterilization. The MIBDW closure rate of rats after 21 days of treatment was 92.4%, much better than that of 61.1% of the control group. The engineered EGCG-BPQDs@H were found to promote MIDBW healing by triggering the PI3K/AKT and ERK1/2 signaling pathways, which could enhance cell proliferation and differentiation. In addition, intravenous circulation experiment showed good biocompatibility of EGCG-BPQDs@H. No significant damage to major organs was observed in rats. Conclusions The obtained results demonstrated that EGCG-BPQDs@H achieved the synergistic functions of photocatalytic property, photothermal effects and promoted wound healing, and are promising multifunctional nanoplatforms for MIDBW healing in diabetics. Graphical Abstract

Surface charge transfer doping of monolayer molybdenum disulfide by black phosphorus quantum dots

2016 ◽  
Vol 27 (50) ◽  
pp. 505204 ◽  
Author(s):  
Wei Wang ◽  
Xinyue Niu ◽  
Haolei Qian ◽  
Liao Guan ◽  
Ming Zhao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Charge Transfer ◽  
Surface Charge ◽  
Molybdenum Disulfide ◽  
Black Phosphorus ◽  
Black Phosphorus Quantum Dots

Black phosphorus quantum dots as dual-functional electron-selective materials for efficient plastic perovskite solar cells

2018 ◽  
Vol 6 (19) ◽  
pp. 8886-8894 ◽  
Author(s):  
Nianqing Fu ◽  
Chun Huang ◽  
Peng Lin ◽  
Mingshan Zhu ◽  
Tao Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Black Phosphorus ◽  
Selective Layer ◽  
Dual Functional ◽  
Black Phosphorus Quantum Dots ◽  
Electron Extraction

Dual-functional black phosphorus quantum dot electron selective layer was designed for plastic perovskite solar cells. The efficient electron extraction and improved perovskite film quality contributed to the reasonably high efficiency.

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