All chemicals, such as Li3PO4 (Chempur 99.99%), MnCO3 (Aldrich 99.99%), NH4H2PO4 (Chempur 99.99%), MnCl2 (99.999% Aldrich) and pure-MWCNTs were used as received without any further purification. The supporting electrolyte solution, 0.05 M phosphate buffer (PB) was prepared by using sodium phosphate (dibasic and monobasic, anhydrous; Sigma-Aldrich). The pH of PB solution was adjusted to neutral (pH-7) by using NaOH/H2SO4. The de-ionized (DI) water was used to prepare all electrolyte solutions for electrocatalytic studies. The samples such as Human serum (E48), and rat brain serum (C7) were acquired from Chang Gung University, Taiwan. The experimental protocols were carried out on approval of the Institutional Animal Ethics Committee.
Mnco3
Manufactured by Merck Group
MnCO3 is a lab equipment product manufactured by Merck Group. It is a chemical compound with the formula MnCO3, consisting of manganese and carbonate. The core function of this product is to serve as a laboratory reagent or a precursor in various chemical synthesis processes.
Automatically generated - may contain errors
Lab products found in correlation
Li2co3, by Merck Group (2 mentions)
Na2co3, by Merck Group (2 mentions)
Mncl2, by Merck Group (1 mentions)
Caco3, by Merck Group (1 mentions)
Nh4h2po4, by Merck Group (1 mentions)
Ni oh 2, by Merck Group (1 mentions)
K2co3, by Merck Group (1 mentions)
Cs2co3, by Merck Group (1 mentions)
Strontium carbonate, by Merck Group (1 mentions)
Magnesium fluoride mgf2, by Merck Group (1 mentions)
Eu2o3, by Merck Group (1 mentions)
Srco3, by Merck Group (1 mentions)
8 protocols using mnco3
1
Electrochemical Analysis of Biological Samples
2
Synthesis of Ni-Mn Layered Oxide Cathode Materials
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Li1.2Ni0.2Mn0.6O2 was synthesized by wet chemical process as described briefly here. Nickel sulfate hexahydrate (NiSO4·6H2O), manganese sulfate monohydrate (MnSO4·H2O), sodium hydroxide (NaOH), and ammonium hydroxide (NH3·H2O) were used as the starting materials to prepare Ni0.25Mn0.75(OH)2 precursor. The precursor material was washed with hot water to remove residual sodium and sulfuric species, then filtered and dried inside a vacuum oven set at 80 °C for 24 h. Ni0.25Mn0.75(OH)2 was mixed well with Li2CO3 and then calcined at 900 C for 15 h to form the cathode materials. Detailed experimental set-up for the synthesis of the materials was reported in Wang et al.58 . A facile solid-state reaction method, which is easy to scale up for mass production, was adopted to synthesize the spinel LiNi0.5Mn1.5O4. In detail, LiNi0.5Mn1.5O4 was prepared by ball milling a mixture of Li2CO3, NiO and MnCO3 (all from Aldrich) in stoichiometric amount for 4 h followed by calcination at 900 °C for 24 h in air with the heating rate of 10 °C min−1 and cooling rate of 5 °C min−1.
3
Optimization of Calcium-Zinc-Manganese Phosphate
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Ca9Zn1− xMnxNa(PO4)7 with x = 0.05, 0.1, 0.2, 0.4, 0.5, 0.7, and 1.0 (for short CZ1–xMxN) was synthesized by a standard solid-state method from stoichiometric mixtures of CaCO3, ZnO, NH4H2PO4, MnCO3, and Na2CO3 reagents purchased from Sigma-Aldrich [6 (link)]. Firstly, the reagents with a chemical purity of 99.9% were heat-treated to remove possible moisture impurities. Moreover, this was performed to reliably eliminate the possible admixtures and maximize purity of the raw materials. After that, the stoichiometric mixtures were heated to 1373 K and kept for 24 h in a reducing atmosphere of activated carbon to enable the reaction. Powder X-ray diffraction patterns of the synthesized powders were checked using the ICCD PDF-4 database to ensure the absence of all extraneous reflections of the initial or intermediate phases.
4
Synthesis of Li-rich Layered Oxides
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Li-rich layered oxides were prepared by using Li2CO3, Ni(OH)2, MnCO3, and RuO2 as precursors, which were purchased from Sigma Aldrich. Precursors at a stoichiometric ratio of Li: Ni: TM = 1.2:0.2:0.6 (TM = Mn, Ru) were first mixed on a Spex 8000 mill for 3 h, followed by a calcination process at a temperature of 950 °C for 15 h in air.
5
Synthesis of Trifluoroacetate Metal Complexes
6
Synthesis of Na0.44Mn1-xCoxO2 Cathodes
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The samples
of Na0.44Mn1–xCoxO2 (x = 0, 0.01,
0.05) were synthesized by a simple solid-state reaction. Na2CO3 (Sigma, >99%), MnCO3 (Sigma, >99%),
and
Co3O4 (Sigma, >99%) raw materials were mixed
in a stoichiometric ratio. An extra 10 wt % NaCO2 was added
to the mixture to compensate for the loss of Na at high temperatures.
Raw powders were mixed by ball-milling for 1 h to obtain a homogeneous
mixture, then placed in an alumina boat and calcined at 300 °C
for 8 h. The mixtures were heated at 800 °C for 9 h to obtain
the final structure. All heat treatments were carried out in the air
atmosphere with a 5 °C/min heating rate and cooled uncontrolled
to room temperature. Due to the moisture sensitivity of the samples,
all samples were placed in a glovebox filled with argon after heat
treatment.
of Na0.44Mn1–xCoxO2 (x = 0, 0.01,
0.05) were synthesized by a simple solid-state reaction. Na2CO3 (Sigma, >99%), MnCO3 (Sigma, >99%),
and
Co3O4 (Sigma, >99%) raw materials were mixed
in a stoichiometric ratio. An extra 10 wt % NaCO2 was added
to the mixture to compensate for the loss of Na at high temperatures.
Raw powders were mixed by ball-milling for 1 h to obtain a homogeneous
mixture, then placed in an alumina boat and calcined at 300 °C
for 8 h. The mixtures were heated at 800 °C for 9 h to obtain
the final structure. All heat treatments were carried out in the air
atmosphere with a 5 °C/min heating rate and cooled uncontrolled
to room temperature. Due to the moisture sensitivity of the samples,
all samples were placed in a glovebox filled with argon after heat
treatment.
7
Synthesis of Rare-Earth Doped Ceramic Materials
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Strontium carbonate (SrCO3, 99%, Sigma-Aldrich), europium(III)
oxide (Eu2O3, 99.9%, Sigma-Aldrich), magnesium
oxide (MgO, 99%,
Sigma-Aldrich), and manganese(II) carbonate (MnCO3, 99.9%,
Sigma-Aldrich) were used without further purification as reactants
for the solid-state reactions. Magnesium fluoride (MgF2, technical grade, Sigma-Aldrich) was used as a flux material.
oxide (Eu2O3, 99.9%, Sigma-Aldrich), magnesium
oxide (MgO, 99%,
Sigma-Aldrich), and manganese(II) carbonate (MnCO3, 99.9%,
Sigma-Aldrich) were used without further purification as reactants
for the solid-state reactions. Magnesium fluoride (MgF2, technical grade, Sigma-Aldrich) was used as a flux material.
8
Mn(II) Oxidation Kinetics in Basal Media
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Glassware used in the kinetic experiments were acid washed with 3.7% HCl and combusted at 550 °C to eliminate residue metals and organic carbon. All cultures were incubated at 37 °C with shaking at 200 rpm.
The kinetic experiments were performed in 1 L flasks with 0.4 L of the basal media using commercial MnCO3 (Sigma-Aldrich) with a final content of 100 mM Mn(II) as determined using the ICP-MS method (below). The basal media contain either 1 mM NaNO3 (n=4) or 1 mM NH4Cl (n=5) as the N source. Each culture flask was inoculated with 5 ml of a Mn oxide slurry sampled from a flask of an active co-culture grown with 1 mM nitrate and 1 mM urea as the N source. Culture material was sampled from each flask daily for the first 36 days, followed by 3 final, well separated time points over the final 30 days. At each time point, culture flasks were removed from the shaking incubator and swirled. Immediately thereafter, a total of 3 ml of oxides and culture fluid mixture was aseptically sampled from the flask via 5 ml disposable pipette. Of this, 1 ml of the sample was saved at −80 °C for later ICP-MS analysis (below); 2 ml of the sample was centrifuged at 8000 × g for 5 min and the pellet was stored at −80 °C for later quantitative PCR analyses. DNA was extracted from the pellets and quantified as above.
The kinetic experiments were performed in 1 L flasks with 0.4 L of the basal media using commercial MnCO3 (Sigma-Aldrich) with a final content of 100 mM Mn(II) as determined using the ICP-MS method (below). The basal media contain either 1 mM NaNO3 (n=4) or 1 mM NH4Cl (n=5) as the N source. Each culture flask was inoculated with 5 ml of a Mn oxide slurry sampled from a flask of an active co-culture grown with 1 mM nitrate and 1 mM urea as the N source. Culture material was sampled from each flask daily for the first 36 days, followed by 3 final, well separated time points over the final 30 days. At each time point, culture flasks were removed from the shaking incubator and swirled. Immediately thereafter, a total of 3 ml of oxides and culture fluid mixture was aseptically sampled from the flask via 5 ml disposable pipette. Of this, 1 ml of the sample was saved at −80 °C for later ICP-MS analysis (below); 2 ml of the sample was centrifuged at 8000 × g for 5 min and the pellet was stored at −80 °C for later quantitative PCR analyses. DNA was extracted from the pellets and quantified as above.
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