In situ synthesis of cobalt-based tri-metallic nanosheets as highly efficient catalysts for sodium borohydride hydrolysis

Wang, Xiao; Zhao, Yinan; Peng, Xinglan; Chen, Jing; Hu, Wenjing; Tian, Sisi; Tian, Jianniao

doi:10.1016/j.ijhydene.2015.10.139

Cited by 20 publications

(8 citation statements)

References 44 publications

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“…O study provides a good alternative to these catalysts because it succeeded in pre tinctive Cu2−xCaxO/GO nanocomposites. Moreover, the prepared Cu1.7Ca0.3O/G achieved production rates of 9809 mL/g•min, which is higher than that of Ru5 mL/g•min) [67], Ru/NiO-Ni foam (6000 mL/g•min) [68], Ni2P (3700 mL/g CuO/Co3O4/Cu (6162 mL/g•min) [70], Co-Cu-Ni (5100 mL/g•min) [71] Co-W-mL/g•min) [72], CuCo2O (1370 mL/g•min) [73], CuO@C (7240 mL/g•min) [74], an CuO (150 mL/g•min) [75], as listed in Table 1. As a result, we aspire that the na sites prepared in the current study will play a great role as catalysts in hydrog tion systems.…”

Section: Resultsmentioning

confidence: 87%

Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

et al. 2023

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The synthesis of CaCO3/Cu2O/GO nanocomposites was developed by sol-gel auto-combustion method. The analysis of structure was completed on X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and environmental scanning electron microscopy (ESEM). The XRD spectra of the nanocomposites matched the crystal structure of CaCO3/Cu2O. The average crystal size was 20 nm for Cu2O and 25 nm for CaCO3 nanoparticles. FTIR data showed the absorption bands of Cu2O and GO. Raman spectroscopy data confirmed the formation of GO sheets. ESEM micrographs displayed spherical nanoparticles dispersed in GO sheets. X-ray photoelectron spectroscopy showed the peaks of Cu 2p, O 1s, C 1s, Cu 3s, and Ca 2p. The spectra of optical absorption revealed an absorption band of around 450 nm. The calcium content increase led to a decrease in the optical energy gap from 2.14 to 1.5 eV. The production of hydrogen from NaBH4 across the methanolysis reaction was accelerated by the CaCO3/Cu2O/GO nanocomposites. Therefore, these nanocomposites are superior in catalytic hydrogen production systems.

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Section: Resultsmentioning

confidence: 87%

Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

et al. 2023

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“…However, the high costs and scarcity limit their large‐scale applications. Co‐based catalysts have emerged as one kind of promising candidate to replace noble‐metal catalysts owing to their high reactivity and low cost . Until now, numerous kinds of Co‐based catalysts have been utilized in the hydrolysis of NaBH 4 .…”

Section: Figurementioning

confidence: 99%

“…Co-based catalysts have emerged as one kind of promisingc andidate to replacen oble-metal catalysts owing to their high reactivity and low cost. [15][16][17][18] Until now,numerous kinds of Co-based catalysts have been utilized in the hydrolysis of NaBH 4 .A kdim et al reported catalytic properties of different Co salts and found that CoCl 2 shows the best performance in catalyzing the hydrolysis of NaBH 4 . [19] CoO nanocrystals with differents hapes have been prepared by Peng and co-workersa nd have been appliedi nt he hydrolysis of NaBH 4 for hydrogen production.…”

mentioning

confidence: 99%

Cobalt Carbonate Hydroxide Nanowire Array on Ti Mesh: An Efficient and Robust 3D Catalyst for On‐Demand Hydrogen Generation from Alkaline NaBH₄ Solution

Cui

Sun

et al. 2016

Chemistry A European J

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In this work, for the first time, a cobalt carbonate hydroxide (Co(CO ) (OH)⋅0.11 H O) nanowire array on Ti mesh (CHNA/Ti) was applied to drive the dehydrogenation of alkaline NaBH solution for on-demand hydrogen production. Compared with other nanostructured Co-based catalyst systems, CHNA/Ti can be activated more quickly and separated easily from fuel solutions. This self-supported cobalt salt nanowire array catalyst works as an efficient and robust 3D catalyst for the hydrolysis reaction of NaBH with a hydrogen generation rate of 4000 mL min g and a low apparent activation energy of 39.78 kJ mol and offers an attractive system for on-demand hydrogen generation.

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“…Bu beklentilere ek olarak; sürdürülebilir, verimli, temiz, güvenilir ve kaliteli bir enerji kaynağı söz konusu olduğunda akla gelen en makul alternatif hidrojendir. Hidrojen üretimi ve saklanması konusundaki gelişmeler hirojenin yaygın kullanım ihtimalinin gerçek olmasını sağlayacaktır [6][7][8][9][10][11] Hidrojenin yaygın olarak kullanımını kısıtlayan temel sorunlardan biri depolama problemidir [12,13]. Hidrojenin saklanmasında ilk akla gelen teknik yüksek basınç kullanmak olsa da hidrojenin düşük moleküler kütlesinden dolayı enerji yoğunluğu kısıtlanmaktadır [14].…”

Section: Gi̇ri̇ş (Introduction)unclassified

NaBH4 Hidrolizi İçin Al2O3 Destekli Çok Bileşenli Nanokatalizör Sentezi ve Kinetik Değerlendirmesi

Çakanyıldırım

Gökçeoğlu

2023

Politeknik Dergisi

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Yapılan çalışmada Al2O3 destek üzerinde ikili Co-Fe ve üçlü Co-Fe-Pt katalizörleri emdirme tekniği ile sentezlenmiştir. Üretilen katalizörler ile alkali ortamda NaBH4'ün tepkime vermesi sağlanmış ve hidrojen üretim hızı ve kinetik verileri derlenmiştir. Katalizörlerin morfolojik ve boyutsal özelliklerinin anlaşılması maksadı ile taramalı ve geçirimli electron mikroskop (SEM ve TEM) analizleri, hidrojen üretim kapasiteleri ve kinetik verilerin belirlenmesi için ise hidroliz testleri gerçekleştirilmiştir. İki ve üç bileşenli katalizörlerden Co0,95Fe0,05/Al2O3 ve Co0,85Fe0,08Pt0,07/Al2O3 kendi gruplarında en iyi performansı sergilemişlerdir. 40 mg Co0,85Fe0,08Pt0,07/Al2O3 katalizörü ile 20 ˚C sıcaklıkta, 12.750 mL H2/gkat.min hidrojen üretim hızına erişilmiştir. NaBH4 ve katalizör miktarlarını farklılaştırılması ile yapılan çalışmalarda hidrojen üretim hızının katalizör miktarı ile orantılı olduğu ve NaBH4 miktarının tepkime hızına etki mertebesinin 0,22 olduğu görülmüştür. Yüksek aktivite sergileyen Co0,85Fe0,08Pt0,07/Al2O3 katalizörünün aktivasyon enerjisi 26,17 kJ/mol olarak hesaplanmıştır. Bu katalizörün tekrar kullanımlarındaki dönüşüm değerleri aktivitesine oranla daha tatmin edici düzeydedir.

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In situ synthesis of cobalt-based tri-metallic nanosheets as highly efficient catalysts for sodium borohydride hydrolysis

Cited by 20 publications

References 44 publications

Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

Cobalt Carbonate Hydroxide Nanowire Array on Ti Mesh: An Efficient and Robust 3D Catalyst for On‐Demand Hydrogen Generation from Alkaline NaBH₄ Solution

NaBH4 Hidrolizi İçin Al2O3 Destekli Çok Bileşenli Nanokatalizör Sentezi ve Kinetik Değerlendirmesi

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In situ synthesis of cobalt-based tri-metallic nanosheets as highly efficient catalysts for sodium borohydride hydrolysis

Cited by 20 publications

References 44 publications

Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

Synthesis of CaCO3/Cu2O/GO Nanocomposite Catalysts for Hydrogen Production from NaBH4 Methanolysis

Cobalt Carbonate Hydroxide Nanowire Array on Ti Mesh: An Efficient and Robust 3D Catalyst for On‐Demand Hydrogen Generation from Alkaline NaBH4 Solution

NaBH4 Hidrolizi İçin Al2O3 Destekli Çok Bileşenli Nanokatalizör Sentezi ve Kinetik Değerlendirmesi

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Cobalt Carbonate Hydroxide Nanowire Array on Ti Mesh: An Efficient and Robust 3D Catalyst for On‐Demand Hydrogen Generation from Alkaline NaBH₄ Solution