scholarly journals A Novel Domain-Confined Growth Strategy for In Situ Controllable Fabrication of Individual Hollow Nanostructures

2018 ◽  
Vol 5 (5) ◽  
pp. 1700213 ◽  
Author(s):  
Luping Tang ◽  
Longbing He ◽  
Lei Zhang ◽  
Kaihao Yu ◽  
Tao Xu ◽  
...  
Keyword(s):  
Growth Strategy ◽  
Hollow Nanostructures ◽  
Confined Growth ◽  
Controllable Fabrication

Controllable preparation of core–shell magnetic covalent-organic framework nanospheres for efficient adsorption and removal of bisphenols in aqueous solution

2017 ◽  
Vol 53 (16) ◽  
pp. 2511-2514 ◽  
Author(s):  
Yang Li ◽  
Cheng-Xiong Yang ◽  
Xiu-Ping Yan
Keyword(s):  
Aqueous Solution ◽  
Growth Strategy ◽  
Core Shell ◽  
Covalent Organic Framework ◽  
Shell Nanostructures ◽  
Controllable Fabrication ◽  
Controllable Preparation ◽  
Organic Framework

A monomer-mediated in situ growth strategy has been developed for the controllable fabrication of magnetic COF core–shell nanostructures with great potential for wide applications.

In-Situ Confined Growth of Monodisperse Pt Nanoparticle@Graphene Nanobox Composites as Electrocatalytic Nanoreactors

Small ◽  
2014 ◽  
Vol 11 (8) ◽  
pp. 1003-1010 ◽  
Author(s):  
Yingying Lv ◽  
Yin Fang ◽  
Zhangxiong Wu ◽  
Xufang Qian ◽  
Yanfang Song ◽  
...  
Keyword(s):  
Pt Nanoparticle ◽  
Confined Growth

scholarly journals Facile Synthesis of Pd@PtM (M = Rh, Ni, Pd, Cu) Multimetallic Nanorings as Efficient Catalysts for Ethanol Oxidation Reaction

2021 ◽  
Vol 9 ◽  
Author(s):  
Xingqiao Wu ◽  
Xiao Li ◽  
Yucong Yan ◽  
Sai Luo ◽  
Jingbo Huang ◽  
...  
Keyword(s):  
Benzoic Acid ◽  
Epitaxial Growth ◽  
Oxidation Reaction ◽  
Ethanol Oxidation ◽  
Hollow Structure ◽  
Ethanol Oxidation Reaction ◽  
Hollow Nanostructures ◽  
Oxidative Etching ◽  
General Method

Pt-based multimetallic nanorings with a hollow structure are attractive as advanced catalysts due to their fantastic structure feature. However, the general method for the synthesis of such unique nanostructures is still lack. Here we report the synthesis of Pd@PtM (M = Rh, Ni, Pd, Cu) multimetallic nanorings by selective epitaxial growth of Pt alloyed shells on the periphery of Pd nanoplates in combination with oxidative etching of partial Pd in the interior. In situ generation of CO and benzoic acid arising from interfacial catalytic reactions between Pd nanoplates and benzaldehyde are critical to achieve high-quality Pt-based multimetallic nanorings. Specifically, the in-situ generated CO promotes the formation of Pt alloyed shells and their epitaxial growth on Pd nanoplates. In addition, the as-formed benzoic acid and residual oxygen are responsible for selective oxidative etching of partial Pd in the interior. When evaluated as electrocatalysts, the Pd@PtRh nanorings exhibit remarkably enhanced activity and stability for ethanol oxidation reaction (EOR) compared to the Pd@PtRh nanoplates and commercial Pt/C due to their hollow nanostructures.

Embedded growth of colorful CsPbX3 (X = Cl, Br, I) nanocrystals in metal−organic frameworks at Room Temperature

2022 ◽  
Author(s):  
Chen Chen ◽  
Lei Nie ◽  
Yizhe Huang ◽  
Shuang Xi ◽  
Xingyue Liu ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Metal Organic Framework ◽  
Light Emitting ◽  
Confined Growth ◽  
Wide Color Gamut ◽  
Metal Organic ◽  
Interfacial Synthesis ◽  
Novel Strategy ◽  
Lead Halide

Abstract Herein, we develop a novel strategy for preparing all-inorganic cesium lead halide (CsPbX3, X= Cl, Br, I) perovskite nanocrystals (NCs)@Zn-based metal-organic framework (MOF) composites through interfacial synthesis. The successful embedding of fluorescent perovskite NCs in Zn-MOFs is due to the in-situ confined growth, which is attributed to the re-nucleation of water-triggered phase transformation from Cs4PbBr6 to CsPbBr3. The controllable synthesis of mixed-halide based composites with various emission wavelength can be achieved by adding the desired amount of halide (Cl or I) salts in the re-nucleation process. More importantly, the anion exchange reaction is inhibited among various composites with different halogen atoms by being trapped in MOFs. Besides, a white light-emitting diode (WLED) is produced using a blue LED chip with the green-emitting and red-emitting composites, which has a color coordinate of (0.3291, 0.3272) and a wide color gamut. This work provides a novel route to achieving perovskite NCs growth in MOFs, which also can be extended to the other NCs embedded in frames as well.

scholarly journals In Situ Construction of a MgSn(OH)6 Perovskite/SnO2 Type-II Heterojunction: A Highly Efficient Photocatalyst towards Photodegradation of Tetracycline

Nanomaterials ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 53 ◽  
Author(s):  
Yuanyuan Li ◽  
Xiaofang Tian ◽  
Yaoqiong Wang ◽  
Qimei Yang ◽  
Yue Diao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ultraviolet Irradiation ◽  
Photocatalytic Oxidation ◽  
Photocatalytic Performance ◽  
Diffuse Reflectance Spectroscopy ◽  
Active Species ◽  
Growth Strategy ◽  
Type Ii ◽  
Highly Efficient

Using solar energy to remove antibiotics from aqueous environments via photocatalysis is highly desirable. In this work, a novel type-II heterojunction photocatalyst, MgSn(OH)6/SnO2, was successfully prepared via a facile one-pot in situ hydrothermal method at 220 °C for 24 h. The obtained heterojunctions were characterized via powder X-ray diffraction, Fourier-transform infrared spectroscopy, transmission electron microscopy, and ultraviolet-visible diffuse reflectance spectroscopy. The photocatalytic performance was evaluated for photodegradation of tetracycline solution under ultraviolet irradiation. The initial concentration of tetracycline solution was set to be 20 mg/L. The prepared heterojunctions exhibited superior photocatalytic activity compared with the parent MgSn(OH)6 and SnO2 compounds. Among them, the obtained MgSn(OH)6/SnO2 heterojunction with MgCl2·6H2O:SnCl4·5H2O = 4:5.2 (mmol) displayed the highest photocatalytic performance and the photodegradation efficiency conversion of 91% could be reached after 60 min under ultraviolet irradiation. The prepared heterojunction maintained its performance after four successive cycles of use. Active species trapping experiments demonstrated that holes were the dominant active species. Hydroxyl radicals and superoxide ions had minor effects on the photocatalytic oxidation of tetracycline. Photoelectrochemical measurements were used to investigate the photocatalytic mechanism. The enhancement of photocatalytic activity could be assigned to the formation of a type-II junction photocatalytic system, which was beneficial for efficient transfer and separation of photogenerated electrons and holes. This research provides an in situ growth strategy for the design of highly efficient photocatalysts for environmental restoration.

Decoration of upconversion nanocrystals with metal sulfide quantum dots by a universal in situ controlled growth strategy

Nanoscale ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 3977-3987 ◽  
Author(s):  
Kaimin Du ◽  
Pengpeng Lei ◽  
Manli Zhang ◽  
Xuan Gao ◽  
Shuang Yao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Metal Sulfide ◽  
Growth Strategy ◽  
Controlled Growth ◽  
Upconversion Nanocrystals

Multifunctional NaYF4:Yb/Er@CS@Mn+S (M = Ag, Cu, Cd) nanocomposites could be prepared by a universal in situ controlled growth strategy.

Gestated uniform yolk–shell Sn@N-doped hollow mesoporous carbon spheres with buffer space for boosting lithium storage performance

2020 ◽  
Vol 56 (55) ◽  
pp. 7629-7632 ◽  
Author(s):  
Xiaoyu Wu ◽  
Chen Qian ◽  
Huayu Wu ◽  
Lin Xu ◽  
Lingli Bu ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Lithium Ion ◽  
Thermal Reduction ◽  
Growth Strategy ◽  
Carbon Spheres ◽  
Lithium Storage ◽  
High Specific Capacity ◽  
Storage Performance ◽  
Confined Growth ◽  
Good Cycling Stability

Based on the confined growth strategy and hydrogen thermal reduction, we constructed and synthesized uniform yolk–shell structured Sn@NHMCSs, which exhibit high specific capacity and good cycling stability as an anode material in lithium ion batteries.

Insight into light-driven antibacterial cotton fabrics decorated by in situ growth strategy

2020 ◽  
Vol 579 ◽  
pp. 233-242 ◽  
Author(s):  
Xiaolin Nie ◽  
Shuanglin Wu ◽  
Alfred Mensah ◽  
Qingqing Wang ◽  
Fenglin Huang ◽  
...  
Keyword(s):  
Cotton Fabrics ◽  
Growth Strategy ◽  
In Situ Growth ◽  
Insight Into
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