Cobalt oxide functionalized nanoporous carbon electrodes and their excellent supercapacitive performance

RSC Advances ◽  
2015 ◽  
Vol 5 (18) ◽  
pp. 13930-13940 ◽  
Author(s):  
Dattatray S. Dhawale ◽  
Gurudas P. Mane ◽  
Stalin Joseph ◽  
Siddulu N. Talapaneni ◽  
Chokkalingam Anand ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Nanoporous Carbon ◽  
Carbon Electrodes ◽  
Incipient Wetness Impregnation ◽  
Supercapacitive Performance ◽  
Supercapacitor Application ◽  
Impregnation Technique ◽  
Incipient Wetness ◽  
Coo Nanoparticles

Nanoporous carbon (CMK-3-150) functionalized with different amounts of cobalt oxide (CoO) nanoparticles was synthesized by an incipient wetness impregnation technique for supercapacitor application.

Decoration of mesoporous carbon electrodes with tin oxide to boost their supercapacitive performance

2020 ◽  
Vol 44 (29) ◽  
pp. 12654-12663
Author(s):  
Hang T. T. Le ◽  
Duc Tung Ngo ◽  
Viet-Anh-Dung Dang ◽  
Thuy T. B. Hoang ◽  
Chan-Jin Park
Keyword(s):  
Tin Oxide ◽  
Mesoporous Carbon ◽  
Carbon Electrodes ◽  
Charge Storage ◽  
Incipient Wetness Impregnation ◽  
Supercapacitive Performance ◽  
Unique Material ◽  
Incipient Wetness

A unique material comprising mesoporous carbon decorated with tin oxide was synthesised by facile incipient wetness impregnation for enhanced charge storage.

scholarly journals PREPARASI KARBON TEREMBAN OKSIDA COBALT DARI LIMBAH KULIT MANGGIS SEBAGAI ADSORBEN PENJERAP ETILEN UNTUK PENGAWETAN BUAH

REAKTOR ◽  
2015 ◽  
Vol 15 (3) ◽  
pp. 165 ◽  
Author(s):  
Nur Indah Fajar Mukti ◽  
Imam Prasetyo ◽  
Aswati Mindaryani
Keyword(s):  
Shelf Life ◽  
Cobalt Oxide ◽  
Silica Gel ◽  
Pore Network ◽  
Carbon Surface ◽  
Incipient Wetness Impregnation ◽  
Impregnation Method ◽  
Banana Fruit ◽  
Incipient Wetness ◽  
Fruit Preservation

Ethylene is a compound produced naturally by fruit that can accelerate the maturity of the fruit. Controlling ethylene gas as a product of metabolism of fruit during storage will prolong the shelf life of the fruit. Controlling ethylene gas is carried out by adsorption process using carbon-impregnated cobalt oxide. In this study, carbon as a support made by pyrolysis of extraction waste of mangosteen peel at a temperature of  850°C for 15 minutes. Furthermore, the process of impregnating of cobalt oxide into the carbon pore network was carried out by using the incipient wetness impregnation method by adding a cobalt salt solution into the carbon pore network,  followed by heating at a temperature of 110oC for 8 hours and calcination at a temperature of 200oC for 6 hours. Ethylene adsorption test performed at 30°C using a static volumetric test. While Cavendish banana fruit preservation process was carried out at ambient temperature (20-32oC) by observing the changing of skin color from day to day. Adsorption test results showed that the ethylene uptake increased with the increasing of the composition of cobalt oxide on the carbon surface. The highest ethylene uptake of 6.094 mmol/(gram of adsorbent) was obtained from adsorption of ethylene using carbon-impregnated 30% cobalt oxide. Fruit preservation process indicated that the increasing of amount of adsorbent can improve the shelf life of bananas Cavendish. The highest result was obtained from the addition of 15 grams of carbon-impregnated cobalt oxide and silica gel that can extend the shelf life of bananas Cavendish for 15 days.   Keywords: adsorption; carbon;  cobalt oxide;  ethylene; impregnation Abstrak Etilen merupakan senyawa yang dihasilkan secara alami oleh buah yang dapat mempercepat kematangan pada buah. Pengontrolan gas etilen sebagai produk metabolisme buah selama penyimpanan akan memperpanjang masa simpan buah tersebut. Pengontrolan gas etilen dilakukan dengan proses adsorpsi menggunakan karbon teremban oksida cobalt. Pada penelitian ini, karbon sebagai pengemban dibuat dari pirolisis limbah kulit manggis sisa ekstraksi pada suhu 850oC selama 15 menit. Selanjutnya, proses pengembanan oksida cobalt pada permukaan karbon dibuat melalui proses impregnasi dengan incipient wetness method yang dilakukan dengan menambahkan larutan garam cobalt ke dalam jaringan pori karbon yang dilanjutkan dengan pemanasan pada suhu 110oC selama 8 jam dan kalsinasi pada suhu 200oC selama 6 jam. Uji adsorpsi etilen dilakukan pada suhu 30oC menggunakan alat uji static volumetric. Sedangkan proses pengawetan buah pisang Cavendish dilakukan pada suhu lingkungan (20 – 32oC) dengan mengamati perubahan warna kulitnya dari hari ke hari. Hasil uji adsorpsi menunjukkan bahwa semakin banyak komposisi oksida cobalt pada permukaan karbon akan meningkatkan kapasitas penjerapan terhadap etilen. Hasil tertinggi sebesar 6,094 mmol/(gram adsorben) diperoleh dari adsorpsi etilen menggunakan karbon teremban 30% oksida cobalt. Dari proses pengawetan buah menunjukkan bahwa jumlah karbon teremban oksida cobalt yang semakin meningkat dapat meningkatkan umur simpan dari buah pisang Cavendish. Hasil tertinggi diperoleh dari penambahan 15 gram karbon teremban cobalt dan silica gel dapat memperpanjang umur simpan buah pisang Cavendish selama 15 hari. Kata kunci: adsorpsi; karbon; oksida cobalt; etilen; impregnasi

Photo-degradation of acid green dye over Co–ZSM-5 catalysts prepared by incipient wetness impregnation technique

2008 ◽  
Vol 153 (1-2) ◽  
pp. 364-371 ◽  
Author(s):  
Zeinhom M. El-Bahy ◽  
Mohamed M. Mohamed ◽  
Farouk I. Zidan ◽  
Mohamed S. Thabet
Keyword(s):  
Incipient Wetness Impregnation ◽  
Photo Degradation ◽  
Impregnation Technique ◽  
Incipient Wetness

Fine tuning of the supercapacitive performance of nanoporous carbon electrodes with different pore diameters

2012 ◽  
Vol 77 ◽  
pp. 256-261 ◽  
Author(s):  
Dattatray S. Dhawale ◽  
Mercy R. Benzigar ◽  
Mohammad A. Wahab ◽  
Chokkalingam Anand ◽  
Shaji Varghese ◽  
...  
Keyword(s):  
Nanoporous Carbon ◽  
Fine Tuning ◽  
Carbon Electrodes ◽  
Supercapacitive Performance

Uptake of Arsenic(V) with Aluminum Modified MCM-41

2013 ◽  
Vol 807-809 ◽  
pp. 1518-1522
Author(s):  
Su Yun He ◽  
Cai Yun Han ◽  
Su Fang He ◽  
Hua Wang ◽  
Chun Xia Liu ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Calcination Temperature ◽  
Incipient Wetness Impregnation ◽  
Adsorption Capacities ◽  
Impregnation Technique ◽  
Ordered Mesoporous ◽  
Incipient Wetness ◽  
Mcm 41

The highly ordered mesoporous MCM-41 was synthesized and modified with various content of aluminum (0-15%) using an incipient wetness impregnation technique. The prepared Al modified MCM-41 materials were characterized by XRD, and explored as adsorbents for arsenic(V) removal. Al loading and calcination temperature played significant roles in the absorbents structures and adsorption capacities. The maximal arsenic(V) adsorption capacity of 16.3 mgAs/gAl was obtained when Al loading of 10 wt% and calcination temperature of 400 °C were used.

Design and synthesis of nanoporous carbon materials using Cd-based homochiral metal–organic frameworks as precursors for supercapacitor application

CrystEngComm ◽  
2018 ◽  
Vol 20 (31) ◽  
pp. 4364-4369 ◽  
Author(s):  
Guangju Zhang ◽  
Siqi Xiu ◽  
Ying Wei ◽  
Qingguo Zhang ◽  
Kedi Cai
Keyword(s):  
Carbon Materials ◽  
Metal Organic Frameworks ◽  
Nanoporous Carbon ◽  
Supercapacitor Application ◽  
Design And Synthesis ◽  
Metal Organic ◽  
Nanoporous Carbon Materials

Design and synthesis of nanoporous carbon materials using Cd-based homochiral metal–organic frameworks as precursors for supercapacitor application.

scholarly journals ELECTROCHEMICAL PROPERTIES OF NANOPOROUS CARBON ELECTRODES

2002 ◽  
Vol 5 (2) ◽  
pp. 307 ◽  
Author(s):  
Lust ◽  
Nurk ◽  
Janes ◽  
Arulepp ◽  
Permann ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Nanoporous Carbon ◽  
Carbon Electrodes

scholarly journals Synthesis, Characterization, and Antimicrobial Activity of CoO Nanoparticles from a Co (II) Complex Derived from Polyvinyl Alcohol and Aminobenzoic Acid Derivative

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Maged S. Al-Fakeh ◽  
Roaa O. Alsaedi
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cobalt Oxide ◽  
Oxide Nanoparticles ◽  
Aminobenzoic Acid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cobalt Oxide Nanoparticles ◽  
Coo Nanoparticles ◽  
Scanning Electron

Cobalt oxide nanoparticles (CoO NPs) were synthesized by the calcination method from the Co (II) complex which has the formula [Co(PVA)(P-ABA)(H2O)3], PVA = polyvinyl alcohol, and P-ABA = para-aminobenzoic acid. The calcination temperature was 550°C, and the products were characterized by element analysis, thermal analyses (TGA and DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), UV-Vis spectra, and scanning electron microscopy (SEM) techniques. The kinetic and thermodynamic parameters (∆H   ∗ , ∆G   ∗ , and ∆S   ∗ ) for the cobalt (II) complex are calculated. The charges been carried by the atoms cause dipole moment 10.53 and 3.84 debye and total energy 11.04 × 102 and 24.80 × 102k Cal mol−1 for the Co (II) complex and cobalt oxide, respectively. X-ray diffraction confirmed that the resulting oxide was pure single-crystalline CoO nanoparticles. Scanning electron microscopy indicating that the crystallite size of cobalt oxide nanocrystals was in the range of 36–54 nm. Finally, the antimicrobial activity of cobalt oxide nanoparticles was evaluated using four bacterial strains and one fungal strain. Two strains of Gram-positive cocci (Staphylococcus aureus and Enterococcus faecalis), two strains of Gram-negative bacilli (Escherichia coli and Pseudomonas aeruginosa), and one strain of yeast such as fungi (Candida albicans) were used in this study.

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