K4Nb6O17,15 KLaNb2O7,16 RbCa2Ta3O10,17 LiTaO3,18 NaTaO3 18 and KTaO3 18 were prepared by a solid-state reaction, as previously reported. The starting materials used were as follows: Li2CO3 (Wako Pure Chemical; 99.0%), Na2CO3 (Kanto Chemical; 99.0%), K2CO3 (Kanto Chemical; 99.5%), Rb2CO3 (Kojundo Chemical; 99%), CaCO3 (Kanto Chemical; 99.5%), La2O3 (Kanto Chemical; 99.99%), Nb2O5 (Kojundo Chemical; 99.95%) and Ta2O5 (Rare Metallic; 99.99%). K2La2Ti3O10 19 was prepared using a polymerized complex method. The precursor was obtained from K2CO3 (Kanto Chemical; 99.5%), Ti(OC4H9)4 (Kanto Chemical; 97%), La(NO3)3 (Kanto Chemical; 99.99%), ethylene glycol (Kanto Chemical; 99.5%) and citric acid (Sigma Aldrich; 99.5%) by pyrolysis and was calcined at 1173 K for 2 h in air using an alumina crucible. CuCl was freshly prepared by reduction of CuCl2 (Wako Pure Chemical; 99.0%) with metallic Cu in boiling dilute hydrochloric acid. The molten CuCl treatment was carried out by immersing the prepared photocatalysts in molten CuCl at 773 K for 10 h in a quartz ampoule tube under vacuum. After the molten salt treatment, the excess CuCl was removed using an aqueous NH3 solution.
K2co3
Manufactured by Kanto Chemical
Sourced in Japan
K2CO3, also known as potassium carbonate, is a white, crystalline compound that is commonly used in various industrial and laboratory applications. Its core function is to serve as a chemical reagent, providing a source of potassium and carbonate ions. K2CO3 is highly soluble in water and has a wide range of uses, including in the production of glass, ceramics, and certain pharmaceuticals. It can also be used as a pH regulator and as a source of potassium in various chemical processes.
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Lab products found in correlation
4 protocols using k2co3
1
Synthesis and Photocatalytic Treatment
2
Fabrication of Ta3N5/KTaO3 Heterojunction
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KTaO3 particles were fabricated by a conventional solid-state reaction method. Ta2O5 (99.9%; Kojundo Chemical Laboratory Co., Ltd.) and K2CO3 (99.5%; Kanto Chemical Co., Inc.) were mixed at a Ta : K molar ratio of 1 : 1.05. Excess K was added to compensate for losses by volatilization at high temperatures. The mixture was thoroughly ground in an agate mortar for 90 min in the presence of a small amount of ethanol as a dispersant. After drying, the resulting mixture was transferred into an alumina crucible and calcined at 1173 K for 1 hour and then at 1423 K for 10 hour in static air. The KTaO3 obtained in this manner was washed with ultrapure water at 343 K for 2 hour and centrifuged twice to remove any residual K2CO3. The powder was then completely dried by heating at 343 K overnight. Subsequently, the as-prepared KTaO3 was subjected to a nitridation process to obtain Ta3N5 grown on KTaO3. KTaO3 (0.5 g) was transferred into an alumina tube and nitrided at 1173 K for 0.25, 4 and 10 hour under a flow of NH3 gas at 100 mL min–1.
3
Characterization of SiO2-Al2O3-Na2CO3-K2CO3 Glass
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The glass samples were prepared using SiO2 (MORIMURA, 99.5%), Al2O3 (Kanto Chemical, 99.0%), Na2CO3 (Kanto Chemical, 99.8%) and K2CO3 (Kanto Chemical, 99.5%) reagents. After mixing the ingredients, it was melted in a platinum crucible at 1823 K for an hour at air condition using a heating rate of 10 K/min. The sample was annealed at temperature higher than the glass transition temperature in 50 K for an hour, followed by a cooling to room temperature with a quenching rate of 1 K/min.
The density of the obtained glass sample was measured by Archimedes method and the glass transition temperature was determined by measuring the thermal expansion using a thermo-mechanical analyzer (TMA; TD5000SA). For the electrical resistivity measurement, an aluminum deposited glass sample with 50 × 50 × 4 mm size was prepared, then the resistance was measured at 323 to 473 K. According to the resistance-temperature dependence, the resistivity was determined by assuming the Arrhenius equation.
The density of the obtained glass sample was measured by Archimedes method and the glass transition temperature was determined by measuring the thermal expansion using a thermo-mechanical analyzer (TMA; TD5000SA). For the electrical resistivity measurement, an aluminum deposited glass sample with 50 × 50 × 4 mm size was prepared, then the resistance was measured at 323 to 473 K. According to the resistance-temperature dependence, the resistivity was determined by assuming the Arrhenius equation.
4
Tetraacryloyltriethylenetetramine-based Metal Deposition
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N,N′,N″,N‴-Tetraacryloyltriethylenetetramine (AM4) was kindly donated by Fujifilm Corporation (Tokyo, Japan), and used as received. 1,6-Hexanediamine (HDA, Fujifilm Wako Pure Chemical Industries, Osaka, Japan) was commercially obtained, and used as received.
SnCl2 (Tokyo Chemical Industry Co. Ltd., Tokyo, Japan), PdCl2 (Fujifilm Wako Pure Chemical Industries), and hydrochloric acid (Kanto Chemical Co., Inc., Tokyo, Japan) were commercially obtained and used as received. Ni-P electrolyte, which was consisted of nickel chloride (1.8 wt %), sodium hypophosphite (2.4 wt %), complexing agent (2.4 wt %), and ion-exchanged water (93.4 wt %), was commercially obtained from Okuno Chemical Industries Co., Ltd. (Osaka, Japan). Palladium(II) acetylacetonate (Pd(acac)2, Tokyo Chemical Industry Co. Ltd.), CO2 (99.99%, Nippon Tansan Co., Ltd., Tokyo, Japan) and polyoxyethylene lauryl ether (Tokyo Chemical Industry Co. Ltd.) were was commercially obtained.
Ethanol (EtOH, Kanto Chemical Co., Inc., Tokyo, Japan), K2CO3 (Kanto Chemical Co., Inc.), phenylboronic acid (Tokyo Chemical Industry Co. Ltd.), and 4-brompanisol (Tokyo Chemical Industry Co. Ltd.) were commercially obtained and used as received.
SnCl2 (Tokyo Chemical Industry Co. Ltd., Tokyo, Japan), PdCl2 (Fujifilm Wako Pure Chemical Industries), and hydrochloric acid (Kanto Chemical Co., Inc., Tokyo, Japan) were commercially obtained and used as received. Ni-P electrolyte, which was consisted of nickel chloride (1.8 wt %), sodium hypophosphite (2.4 wt %), complexing agent (2.4 wt %), and ion-exchanged water (93.4 wt %), was commercially obtained from Okuno Chemical Industries Co., Ltd. (Osaka, Japan). Palladium(II) acetylacetonate (Pd(acac)2, Tokyo Chemical Industry Co. Ltd.), CO2 (99.99%, Nippon Tansan Co., Ltd., Tokyo, Japan) and polyoxyethylene lauryl ether (Tokyo Chemical Industry Co. Ltd.) were was commercially obtained.
Ethanol (EtOH, Kanto Chemical Co., Inc., Tokyo, Japan), K2CO3 (Kanto Chemical Co., Inc.), phenylboronic acid (Tokyo Chemical Industry Co. Ltd.), and 4-brompanisol (Tokyo Chemical Industry Co. Ltd.) were commercially obtained and used as received.
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