scholarly journals Synthesis of Monoclinic Vanadium Dioxide via One-Pot Hydrothermal Route

2021 ◽  
Vol 5 (1) ◽  
pp. 13
Author(s):  
Guowei Liu ◽  
Zengyan Du ◽  
Ming Li ◽  
Yi Long
Keyword(s):  
Hydrothermal Synthesis ◽  
Vanadium Dioxide ◽  
Annealed Sample ◽  
Solar Modulation ◽  
Smart Window ◽  
Hydrothermal Route ◽  
One Pot ◽  
Uniform Size ◽  
One Step ◽  
The One

Pure monoclinic vanadium dioxide nanoparticles (VO2 NPs) with a controlled uniform size are considered essential for the preparation of thermochromic smart window coatings on desired substrates. Herein, we report a facile one-step hydrothermal synthesis of VO2(M) NPs without post-treatment of annealing, which may induce unwanted aggregation of NPs. In contrast with the annealed sample, the one-step processed VO2(M) NPs exhibit superior thermochromic performance with the solar modulation efficiency of 11.8% and luminous transmittance of 37.3%.

A Study on the Rearrangement of Dialkyl 1-Aryl-1-hydroxymethylphosphonates to Benzyl Phosphates

2020 ◽  
Vol 24 (4) ◽  
pp. 465-471 ◽  
Author(s):  
Zita Rádai ◽  
Réka Szabó ◽  
Áron Szigetvári ◽  
Nóra Zsuzsa Kiss ◽  
Zoltán Mucsi ◽  
...  
Keyword(s):  
Quantum Chemical ◽  
Room Temperature ◽  
Phase Transfer ◽  
One Pot ◽  
Substrate Dependence ◽  
Triethylbenzylammonium Chloride ◽  
One Step ◽  
The Pudovik Reaction ◽  
The One ◽  
Solid Liquid

The phospha-Brook rearrangement of dialkyl 1-aryl-1-hydroxymethylphosphonates (HPs) to the corresponding benzyl phosphates (BPs) has been elaborated under solid-liquid phase transfer catalytic conditions. The best procedure involved the use of triethylbenzylammonium chloride as the catalyst and Cs2CO3 as the base in acetonitrile as the solvent at room temperature. The substrate dependence of the rearrangement has been studied, and the mechanism of the transformation under discussion was explored by quantum chemical calculations. The key intermediate is an oxaphosphirane. The one-pot version starting with the Pudovik reaction has also been developed. The conditions of this tandem transformation were the same, as those for the one-step HP→BP conversion.

scholarly journals Fabrication and Superhydrophobic Property of ZnO Micro/Nanocrystals via a Hydrothermal Route

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Chunmei Xiao ◽  
Jing Yan ◽  
Taohai Li
Keyword(s):  
Large Scale ◽  
Hydrothermal Process ◽  
Hydrothermal Route ◽  
One Pot ◽  
Uniform Size ◽  
Water Contact ◽  
X Ray ◽  
Superhydrophobic Property ◽  
Surface Modified ◽  
Scanning Electron

Superhydrophobic ZnO micro/nanocrystals were fabricated on a large scale using a facile one-pot hydrothermal process successfully. The morphologies and chemical composition of as-synthesized ZnO were investigated by the scanning electron microscope (SEM) and X-ray powder diffraction (XRD). The morphology of ZnO products changed from uniform size microrods to flower-like micronanostructures, when the temperature changed from 120°C to 180°C. The morphology of ZnO was strongly affected by the pH. The wettability of the as-synthesized ZnO micro/nanocrystals was studied by measuring water contact angle (CA). The largest static CA for water is 167°, which is closely related to both the ZnO micro/nanostructure and chemical modification. Furthermore, the as-prepared ZnO surface showed superhydrophobicity for some corrosive liquids such as basic and acidic aqueous solutions. The CAs of the surface modified with ZnO prepared at 160°C were over 155° in the range of pH = 1–13.

scholarly journals Rhodium catalyzed cascade cyclization featuring B–H and C–H activation: one-step construction of carborane-fused N-polyheterocycles

2018 ◽  
Vol 9 (30) ◽  
pp. 6390-6394 ◽  
Author(s):  
Hairong Lyu ◽  
Yangjian Quan ◽  
Zuowei Xie
Keyword(s):  
Reaction Mechanism ◽  
Structural Identification ◽  
One Pot ◽  
Cascade Cyclization ◽  
One Step ◽  
The One

A novel Rh-catalyzed cascade cyclization featuring both carboranyl B–H and aryl C–H activation has been developed, resulting in the one-pot construction of three new B–C and C–C bonds. The isolation and structural identification of a key intermediate provide solid evidence for the reaction mechanism.

Facile synthesis of CuCr2O4 spinel nanoparticles: a recyclable heterogeneous catalyst for the one pot hydroxylation of benzene

2014 ◽  
Vol 4 (12) ◽  
pp. 4232-4241 ◽  
Author(s):  
Shankha S. Acharyya ◽  
Shilpi Ghosh ◽  
Shubhadeep Adak ◽  
Takehiko Sasaki ◽  
Rajaram Bal
Keyword(s):  
Hydrothermal Synthesis ◽  
Synthesis Method ◽  
Facile Synthesis ◽  
One Pot ◽  
Nanoparticle Catalysts ◽  
Hydroxylation Of Benzene ◽  
The One ◽  
Recyclable Heterogeneous Catalyst ◽  
Selective Hydroxylation ◽  
Spinel Nanoparticles

A facile hydrothermal synthesis method is developed to prepare CuCr2O4 spinel nanoparticle catalysts with sizes between 25–50 nm for selective hydroxylation of benzene.

scholarly journals 1-(4-Nitrophenyl)-1H-1,2,3-Triazole-4-carbaldehyde: Scalable Synthesis and Its Use in the Preparation of 1-Alkyl-4-Formyl-1,2,3-triazoles

Organics ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 404-414
Author(s):  
Tomas Opsomer ◽  
Kaat Valkeneers ◽  
Ana Ratković ◽  
Wim Dehaen
Keyword(s):  
One Pot ◽  
Complete Hydrolysis ◽  
One Step ◽  
Synthetic Intermediates ◽  
Cornforth Rearrangement ◽  
Scalable Synthesis ◽  
The One ◽  
Novel Applications ◽  
Hydrolysis Of

1,2,3-Triazole-4-carbaldehydes are useful synthetic intermediates which may play an important role in the discovery of novel applications of the 1,2,3-triazole moiety. In this work, a one-step multigram scale synthesis of 4-formyl-1-(4-nitrophenyl)-1H-1,2,3-triazole (FNPT) as a preferred reagent for the synthesis of 1-alkyl-4-formyltriazoles is described, making use of the commercially available 3-dimethylaminoacrolein and 4-nitrophenyl azide. Next, the earlier reported reaction of FNPT with alkylamines is further explored, and for hexylamine, the one-pot sequential cycloaddition and Cornforth rearrangement is demonstrated. In addition, a useful protocol for the in situ diazotization of 4-nitroaniline is provided. This facilitated the complete hydrolysis of rearranged 4-iminomethyl-1,2,3-triazoles and allowed for the recycling of 4-nitrophenyl azide.

scholarly journals One-pot rota-crystallized hollownest-structured Ti–zeolite: a calcination-free and recyclable catalytic material

2016 ◽  
Vol 7 (8) ◽  
pp. 4966-4972 ◽  
Author(s):  
Dan Zhou ◽  
Tianjun Zhang ◽  
Qinghua Xia ◽  
Yarong Zhao ◽  
Kexin Lv ◽  
...  
Keyword(s):  
Zeolite A ◽  
One Pot ◽  
Crystallization Method ◽  
Catalytic Material ◽  
One Step ◽  
The One

A hydrothermal rota-crystallization method is developed for the one-step synthesis of a hollownest-structured zeolite precursor with the shell composed of autogenously-intergrown MWW nanosheet crystals containing a large number of stacking-pores without any porogen or hard scaffold.

A programmable Y-shaped junction scaffold-mediated modular and cascade amplification strategy for the one-step, isothermal and ultrasensitive detection of target DNA

2015 ◽  
Vol 51 (100) ◽  
pp. 17756-17759 ◽  
Author(s):  
Shufeng Liu ◽  
Hongwei Gong ◽  
Xinya Sun ◽  
Tao Liu ◽  
Li Wang
Keyword(s):  
Ultrasensitive Detection ◽  
One Pot ◽  
Target Dna ◽  
One Step ◽  
The One ◽  
Amplification Strategy ◽  
Cascade Amplification ◽  
Junction Probe

A programmable Y-shaped junction probe-mediated modular and cascade amplification strategy was proposed for the one-pot, isothermal and ultrasensitive detection of target DNA.

Ultra-shallow Junction Formation via GeB- ion Implantation of Si

2000 ◽  
Vol 610 ◽  
Author(s):  
Xinming Lu ◽  
Lin Shao ◽  
Jianyue Jin ◽  
Qinmian Li ◽  
I. Rusakova ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Annealed Sample ◽  
Ion Source ◽  
Negative Ion ◽  
Cluster Ions ◽  
Junction Depth ◽  
Si Substrates ◽  
Transmission Electron ◽  
One Step ◽  
The One

AbstractGeB− Cluster ions have been used to effectively produce 0.65-2keV boron for low energy ion implantation. We have generated the GeB− cluster ions using the SNICS ion source (source of negative ion by cesium sputtering). Shallow junctions have been made by the GeB− cluster ions implanting into Si substrates at 15keV, 1×1015/cm2 and 5keV, 5×1014/cm2. The junction depth as small as 37nm has been achieved by rapid thermal annealing of the 5 keV sample at 1000°C for 1 second. A two-step annealing was also performed to study the diffusion of B in the GeB− ion cluster implanted Si by annealing the 15 keV implanted sample at 550°C/300sec+1000°C/10sec. We found that the junction depth of the two-step annealed sample was only half of the one-step annealed sample. TEM (transmission electron microscopy) showed clear recrystallization of the amorphized layer with no observable residual defects. We briefly discussed the role of Ge in regards to reduction of the junction depth.

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