Bioinspired hierarchical copper oxide surfaces for rapid dropwise condensation

2017 ◽  
Vol 5 (40) ◽  
pp. 21422-21428 ◽  
Author(s):  
Shufen Wang ◽  
Minsu Liu ◽  
Yuan Feng ◽  
Yanru Bu ◽  
So Hung Huynh ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Chemical Oxidation ◽  
Oxide Surfaces ◽  
Dropwise Condensation ◽  
Wet Chemical

Patterned copper oxide (CuO) microprotrusions have been developed by combining facile wet-chemical oxidation, photolithography and e-beam evaporation processes.

Effects of Wet Chemical Oxidation on Surface Functionalization and Morphology of Highly Oriented Pyrolytic Graphite

2020 ◽  
Author(s):  
Mikhail Trought ◽  
Isobel Wentworth ◽  
Timothy Leftwich ◽  
Kathryn Perrine
Keyword(s):  
Surface Functionalization ◽  
Functional Group ◽  
Pyrolytic Graphite ◽  
Surface Oxidation ◽  
Chemical Oxidation ◽  
Synthesis Methods ◽  
Acid Solutions ◽  
Highly Oriented Pyrolytic Graphite ◽  
Wet Chemical ◽  
Surface Morphologies

The knowledge of chemical functionalization for area selective deposition (ASD) is crucial for designing the next generation heterogeneous catalysis. Surface functionalization by oxidation was studied on the surface of highly oriented pyrolytic graphite (HOPG). The HOPG surface was exposed to with various concentrations of two different acids (HCl and HNO3). We show that exposure of the HOPG surface to the acid solutions produce primarily the same -OH functional group and also significant differences the surface topography. Mechanisms are suggested to explain these strikingly different surface morphologies after surface oxidation. This knowledge can be used to for ASD synthesis methods for future graphene-based technologies.

Insights into the synergistic role of metal–lattice oxygen site pairs in four-centered C–H bond activation of methane: the case of CuO

2016 ◽  
Vol 6 (11) ◽  
pp. 3984-3996 ◽  
Author(s):  
Jithin John Varghese ◽  
Quang Thang Trinh ◽  
Samir H. Mushrif
Keyword(s):  
Activation Energy ◽  
Copper Oxide ◽  
Bond Activation ◽  
Lattice Oxygen ◽  
Oxide Surfaces ◽  
Energy Barriers ◽  
Metal Lattice ◽  
Oxygen Site ◽  
Site Pair

Of the three mechanisms for activation of methane on copper and copper oxide surfaces, the under-coordinated Cu–O site pair mediated mechanism on CuO surfaces has the lowest activation energy barriers.

Intrinsically water-repellent copper oxide surfaces; An electro-crystallization approach

2018 ◽  
Vol 443 ◽  
pp. 191-197 ◽  
Author(s):  
Raziyeh Akbari ◽  
Gabriela Ramos Chagas ◽  
Guilhem Godeau ◽  
Mohammadreza Mohammadizadeh ◽  
Frédéric Guittard ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Oxide Surfaces ◽  
Water Repellent

scholarly journals One-step Oxidation of Total Organic Carbon, Total Nitrogen, and Total Phosphorous using Wet Chemical Oxidation

2020 ◽  
Vol 42 (12) ◽  
pp. 603-609
Author(s):  
Jeong-Hwan Choi ◽  
Dong-Hun Shin ◽  
Hye-Bin Kim ◽  
Jong-Gook Kim ◽  
Kitae Baek
Keyword(s):  
Organic Carbon ◽  
Total Organic Carbon ◽  
Total Nitrogen ◽  
Uv Irradiation ◽  
Oxidation Process ◽  
Irradiation Time ◽  
Suitable Condition ◽  
Chemical Oxidation ◽  
Total Phosphorous ◽  
Wet Chemical

Objective:This study proposed the simultaneous multi-oxidation of total organic carbon, total nitrogen, and total phosphorous using modified wet chemical oxidation method.Methods:The multi oxidation process was based on the dual radical system with sulfate and hydroxyl radicals. The sodium persulfate (Na2S2O8) and sodium hydroxide (NaOH) were activated at 40℃ and UV irradiation with 254 nm to generate the sulfate radical and hydroxyl radical. The organic matters were oxidized by the dual radicals, and TOC, TN, and TP values were compared with the control group.Results and Discussion:The dual radical system oxidized organic carbon to carbon dioxide effectively, and the TOC values were similar to the value obtained from the high-temperature combustion technique. However, the residual persulfate after oxidation process interfered the absorbance for TN and inhibit the complexation in TP measurement. The residual persulfate was effectively converted to sulfate by longer heating and UV irradiation, and the interferences were more sensitive to reaction temperature than UV irradiation time. As a result, a higher temperature condition was more effective and enhanced the applicability of multi-oxidation.Conclusions:The multi oxidation of TOC, TN, and TP was demonstrated by wet chemical oxidation, and the proposed method is expected to secure the sample and reduce the analytic time. However, the more suitable condition to enhance the accuracy of TOC, TN, and TP in the multi-oxidation system should be studied further.

Fabrication of flower-like micro/nano dual scale structured copper oxide surfaces: Optimization of self-cleaning properties via Taguchi design

2017 ◽  
Vol 422 ◽  
pp. 787-797 ◽  
Author(s):  
Saeideh Sadat Moosavi ◽  
Reza Norouzbeigi ◽  
Elmira Velayi
Keyword(s):  
Copper Oxide ◽  
Taguchi Design ◽  
Oxide Surfaces ◽  
Self Cleaning ◽  
Dual Scale

scholarly journals Critical assessment of wet-chemical oxidation synthesis of silicon quantum dots

2020 ◽  
Vol 222 ◽  
pp. 149-165 ◽  
Author(s):  
Jonathan L. Wilbrink ◽  
Chia-Ching Huang ◽  
Katerina Dohnalova ◽  
Jos M. J. Paulusse
Keyword(s):  
Quantum Dots ◽  
Chemical Oxidation ◽  
Critical Assessment ◽  
Magnesium Silicide ◽  
Silicon Quantum Dots ◽  
Wet Chemical ◽  
Oxidation Synthesis

The wet-chemical Si QD synthesis by oxidation of magnesium silicide (Mg2Si) with bromine (Br2) was revisited.

scholarly journals N‐Heterocyclic Carbenes Reduce and Functionalize Copper Oxide Surfaces in One Pot

2020 ◽  
Vol 26 (50) ◽  
pp. 11431-11434
Author(s):  
Alex J. Veinot ◽  
Abrar Al‐Rashed ◽  
J. Daniel Padmos ◽  
Ishwar Singh ◽  
Dianne S. Lee ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Heterocyclic Carbenes ◽  
Oxide Surfaces ◽  
One Pot

Catalytic properties of Pd nanoparticles supported on Cu2O microspheres for hydrogen peroxide electroreduction

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53320-53325 ◽  
Author(s):  
Limei Sun ◽  
Shuaishuai Zhang ◽  
Wuyunga Bao ◽  
Wurigamula He
Keyword(s):  
Hydrogen Peroxide ◽  
Copper Oxide ◽  
Cuprous Oxide ◽  
Catalytic Properties ◽  
Catalyst Activity ◽  
Pd Nanoparticles ◽  
Chemical Approach ◽  
Wet Chemical ◽  
Hydrogen Peroxide Electroreduction

Cu2O was synthesized by a wet-chemical approach, and Pd electrocatalysts supported on cuprous oxide (Pd/Cu2O) and Vulcan XC-72 (Pd/C) were synthesized. The Pd/Cu2O catalyst comprised copper oxide and metallic Cu, improving the catalyst activity for H2O2 electroreduction.

Ion scattering analysis of contaminated copper oxide surfaces before and after cleaning

Vacuum ◽  
1978 ◽  
Vol 28 (1) ◽  
pp. 9-10 ◽  
Author(s):  
AC Miller ◽  
AW Czanderna
Keyword(s):  
Copper Oxide ◽  
Oxide Surfaces ◽  
Ion Scattering ◽  
Before And After
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