The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
Richard L Brutchey - One of the best experts on this subject based on the ideXlab platform.
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solution deposition of a bournonite cupbsbs3 semiconductor thin film from the dissolution of bulk materials with a thiol amine Solvent Mixture
Journal of the American Chemical Society, 2020Co-Authors: Kristopher M Koskela, Brent C Melot, Richard L BrutcheyAbstract:There is considerable interest in the exploration of new solar absorbers that are environmentally stable, absorb through the visible, and possess a polar crystal structure. Bournonite CuPbSbS3 is a naturally occurring sulfosalt mineral that crystallizes in the noncentrosymmetric Pmn21 space group and possesses an optimal band gap for single junction solar cells; however, the synthetic literature on this quaternary semiconductor is sparse and it has yet to be deposited and studied as a thin film. Here we describe the ability of a binary thiol-amine Solvent Mixture to dissolve the bulk bournonite mineral as well as inexpensive bulk CuO, PbO, and Sb2S3 precursors at room temperature and ambient pressure to generate an ink. The synthetic compound ink derived from the dissolution of the bulk binary precursors in the right stoichiometric ratios yields phase-pure thin films of CuPbSbS3 upon solution deposition and annealing. The resulting semiconductor thin films possess a direct optical band gap of 1.24 eV, an absorption coefficient ∼105 cm-1 through the visible, mobilities of 0.01-2.4 cm2 (V·s)-1, and carrier concentrations of 1018 - 1020 cm-3. These favorable optoelectronic properties suggest CuPbSbS3 thin films are excellent candidates for solar absorbers.
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solution deposited cu2basns4 xsex from a thiol amine Solvent Mixture
Chemistry of Materials, 2018Co-Authors: Carrie L Mccarthy, Richard L BrutcheyAbstract:The discovery that cation antisite defects in Cu2ZnSn(S,Se)4 (CZTS) thin film photovoltaic absorbers are a major contributor to lower than expected device efficiencies has spurred recent interest in material design to develop similar materials that maintain the desirable optoelectronic properties of CZTS, while mitigating this source of loss. Recent reports have shown that this can be accomplished by replacing zinc with a larger cation of the same valency, such as barium, to give Cu2BaSn(S,Se)4. Until this point, Cu2BaSn(S,Se)4 has only been synthesized by solid-state and physical deposition methods. Herein, we use a thiol-amine Solvent Mixture to dissolve bulk Cu2S, BaS, and SnO to prepare a precursor ink that upon low temperature annealing yields phase-pure trigonal Cu2BaSnS4-xSex (nominal x = 0, 1, 2, 3) alloys with tunable direct band gaps from 1.56 – 1.86 eV.
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dissolution of sn sno and sns in a thiol amine Solvent Mixture insights into the identity of the molecular solutes for solution processed sns
Inorganic Chemistry, 2016Co-Authors: Jannise J Buckley, Carrie L Mccarthy, Joselyn Del Pilaralbaladejo, Golam Rasul, Richard L BrutcheyAbstract:Binary Solvent Mixtures of alkanethiols and 1,2-ethylenediamine have the ability to readily dissolve metals, metal chalcogenides, and metal oxides under ambient conditions to enable the facile solution processing of semiconductor inks; however, there is little information regarding the chemical identity of the resulting solutes. Herein, we examine the molecular solute formed after dissolution of Sn, SnO, and SnS in a binary Solvent Mixture comprised of 1,2-ethanedithiol (EDT) and 1,2-ethylenediamine (en). Using a combination of solution 119Sn NMR and Raman spectroscopies, bis(1,2-ethanedithiolate)tin(II) was identified as the likely molecular solute present after the dissolution of Sn, SnO, and SnS in EDT–en, despite the different bulk material compositions and oxidation states (Sn0 and Sn2+). All three semiconductor inks can be converted to phase-pure, orthorhombic SnS after a mild annealing step (∼350 °C). This highlights the ability of the EDT–en Solvent Mixture to dissolve and convert a variety of low...
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solution phase conversion of bulk metal oxides to metal chalcogenides using a simple thiol amine Solvent Mixture
ChemInform, 2015Co-Authors: Carrie L Mccarthy, David H Webber, Emily C Schueller, Richard L BrutcheyAbstract:A Solvent Mixture of en together with Et-SH, HS-(CH2)2-OH, or HS-(CH2)2-SH is used to dissolve Cu2O, ZnO, GeO2, As2O3, Ag2O, CdO, SnO, Sb2O3, PbO, and Bi2O3 at 25 °C.
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solution phase conversion of bulk metal oxides to metal chalcogenides using a simple thiol amine Solvent Mixture
Angewandte Chemie, 2015Co-Authors: Carrie L Mccarthy, David H Webber, Emily C Schueller, Richard L BrutcheyAbstract:A thiol-amine Solvent Mixture is used to dissolve ten inexpensive bulk oxides (Cu2O, ZnO, GeO2, As2O3, Ag2O, CdO, SnO, Sb2O3, PbO, and Bi2O3) under ambient conditions. Dissolved oxides can be converted to the corresponding sulfides using the thiol as the sulfur source, while selenides and tellurides can be accessed upon mixing with a stoichiometric amount of dissolved selenium or tellurium. The practicality of this method is illustrated by solution depositing Sb2Se3 thin films from compound inks of dissolved Sb2O3 and selenium that give high photoelectrochemical current response. The direct band gap of the resulting material can be tuned from 1.2-1.6 eV by modulating the ink formulation to give compositionally controlled Sb2Se(3-x)S(x) alloys.
Siyu Yang - One of the best experts on this subject based on the ideXlab platform.
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synergistic extraction of hydroquinone from an aqueous solution with a Solvent Mixture of diisopropyl ether and n pentanol at t 298 15 k and p 101 3 kpa liquid liquid equilibria and data correlation
Journal of Chemical & Engineering Data, 2020Co-Authors: Miyangzi Suo, Yu Qian, Bokun Chen, Siyu YangAbstract:The synergistic effect for a Solvent Mixture of diisopropyl ether and n-Pentanol to extract hydroquinone from aqueous solution was investigated. Liquid–liquid equilibrium data of the quaternary (n-Pentanol + diisopropyl ether + water + hydroquinone) system were measured at T = 298.15 K and P = 101.3 kPa, using various compositions of Solvent Mixture. It can be seen from the slope of the tie lines that with the increase of distribution coefficients of hydroquinone, the size of the immiscible solution region decreased slightly. The extraction efficiency was evaluated by calculating the separation factor and distribution coefficient. Using the universal quasichemical (UNIQUAC) and nonrandom two-liquid (NRTL) models to correlate with experimental data, the corresponding binary interaction parameters were obtained. The RMSD values of UNIQUAC and NRTL models showed that the calculated results were in good agreement with the liquid–liquid equilibrium data.
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Synergistic Extraction of Hydroquinone from an Aqueous Solution with a Solvent Mixture of Diisopropyl Ether and n-Pentanol at T = 298.15 K and P = 101.3 kPa: Liquid–Liquid Equilibria and Data Correlation
Journal of Chemical & Engineering Data, 2020Co-Authors: Miyangzi Suo, Yu Qian, Bokun Chen, Siyu YangAbstract:The synergistic effect for a Solvent Mixture of diisopropyl ether and n-Pentanol to extract hydroquinone from aqueous solution was investigated. Liquid–liquid equilibrium data of the quaternary (n-Pentanol + diisopropyl ether + water + hydroquinone) system were measured at T = 298.15 K and P = 101.3 kPa, using various compositions of Solvent Mixture. It can be seen from the slope of the tie lines that with the increase of distribution coefficients of hydroquinone, the size of the immiscible solution region decreased slightly. The extraction efficiency was evaluated by calculating the separation factor and distribution coefficient. Using the universal quasichemical (UNIQUAC) and nonrandom two-liquid (NRTL) models to correlate with experimental data, the corresponding binary interaction parameters were obtained. The RMSD values of UNIQUAC and NRTL models showed that the calculated results were in good agreement with the liquid–liquid equilibrium data.
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Structural Characteristic Integrated Computer-Aided Molecular Design for Phenols Removal Considering Synergistic Effect
Industrial & Engineering Chemistry Research, 2018Co-Authors: Chao Guo, Yinshuang Zhang, Yu Qian, Siyu YangAbstract:Zero liquid discharge (ZLD) of coal chemical wastewater is a significant strategy for sustainable management of water resources. Efficient removal of phenols has high significance for the realization of ZLD. In this study, a method of structural characteristics integrated computer-aided molecular design (CAMD) is used for phenols removal considering synergistic effect. Solvent Mixture for synergistic extraction of phenols by using methyl propyl ketone (MPK) in combination with n-pentanol is proposed with the volume ration of MPK to n-pentanol 8:2. Using Solvent Mixture (80% MPK, 20% n-pentanol), the phenols removal efficiencies are observably better than that using methyl isobutyl ketone (MIBK) or diisopropyl ether (DIPE). The total phenols concentration of coal gasification wastewater can be removed from 6273 mg/L to less than 300 mg/L after two-stage extraction. In addition, Solvent Mixture (MPK, n-pentanol) can also achieve the total phenols target if the volume fraction of n-pentanol was no more than ...
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Structural Characteristic Integrated Computer-Aided Molecular Design for Phenols Removal Considering Synergistic Effect
2018Co-Authors: Chao Guo, Yinshuang Zhang, Yu Qian, Siyu YangAbstract:Zero liquid discharge (ZLD) of coal chemical wastewater is a significant strategy for sustainable management of water resources. Efficient removal of phenols has high significance for the realization of ZLD. In this study, a method of structural characteristics integrated computer-aided molecular design (CAMD) is used for phenols removal considering synergistic effect. Solvent Mixture for synergistic extraction of phenols by using methyl propyl ketone (MPK) in combination with n-pentanol is proposed with the volume ration of MPK to n-pentanol 8:2. Using Solvent Mixture (80% MPK, 20% n-pentanol), the phenols removal efficiencies are observably better than that using methyl isobutyl ketone (MIBK) or diisopropyl ether (DIPE). The total phenols concentration of coal gasification wastewater can be removed from 6273 mg/L to less than 300 mg/L after two-stage extraction. In addition, Solvent Mixture (MPK, n-pentanol) can also achieve the total phenols target if the volume fraction of n-pentanol was no more than 70%, the wide range volume fraction of which has potential application in industry
Yu Qian - One of the best experts on this subject based on the ideXlab platform.
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synergistic extraction of hydroquinone from an aqueous solution with a Solvent Mixture of diisopropyl ether and n pentanol at t 298 15 k and p 101 3 kpa liquid liquid equilibria and data correlation
Journal of Chemical & Engineering Data, 2020Co-Authors: Miyangzi Suo, Yu Qian, Bokun Chen, Siyu YangAbstract:The synergistic effect for a Solvent Mixture of diisopropyl ether and n-Pentanol to extract hydroquinone from aqueous solution was investigated. Liquid–liquid equilibrium data of the quaternary (n-Pentanol + diisopropyl ether + water + hydroquinone) system were measured at T = 298.15 K and P = 101.3 kPa, using various compositions of Solvent Mixture. It can be seen from the slope of the tie lines that with the increase of distribution coefficients of hydroquinone, the size of the immiscible solution region decreased slightly. The extraction efficiency was evaluated by calculating the separation factor and distribution coefficient. Using the universal quasichemical (UNIQUAC) and nonrandom two-liquid (NRTL) models to correlate with experimental data, the corresponding binary interaction parameters were obtained. The RMSD values of UNIQUAC and NRTL models showed that the calculated results were in good agreement with the liquid–liquid equilibrium data.
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Synergistic Extraction of Hydroquinone from an Aqueous Solution with a Solvent Mixture of Diisopropyl Ether and n-Pentanol at T = 298.15 K and P = 101.3 kPa: Liquid–Liquid Equilibria and Data Correlation
Journal of Chemical & Engineering Data, 2020Co-Authors: Miyangzi Suo, Yu Qian, Bokun Chen, Siyu YangAbstract:The synergistic effect for a Solvent Mixture of diisopropyl ether and n-Pentanol to extract hydroquinone from aqueous solution was investigated. Liquid–liquid equilibrium data of the quaternary (n-Pentanol + diisopropyl ether + water + hydroquinone) system were measured at T = 298.15 K and P = 101.3 kPa, using various compositions of Solvent Mixture. It can be seen from the slope of the tie lines that with the increase of distribution coefficients of hydroquinone, the size of the immiscible solution region decreased slightly. The extraction efficiency was evaluated by calculating the separation factor and distribution coefficient. Using the universal quasichemical (UNIQUAC) and nonrandom two-liquid (NRTL) models to correlate with experimental data, the corresponding binary interaction parameters were obtained. The RMSD values of UNIQUAC and NRTL models showed that the calculated results were in good agreement with the liquid–liquid equilibrium data.
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Structural Characteristic Integrated Computer-Aided Molecular Design for Phenols Removal Considering Synergistic Effect
Industrial & Engineering Chemistry Research, 2018Co-Authors: Chao Guo, Yinshuang Zhang, Yu Qian, Siyu YangAbstract:Zero liquid discharge (ZLD) of coal chemical wastewater is a significant strategy for sustainable management of water resources. Efficient removal of phenols has high significance for the realization of ZLD. In this study, a method of structural characteristics integrated computer-aided molecular design (CAMD) is used for phenols removal considering synergistic effect. Solvent Mixture for synergistic extraction of phenols by using methyl propyl ketone (MPK) in combination with n-pentanol is proposed with the volume ration of MPK to n-pentanol 8:2. Using Solvent Mixture (80% MPK, 20% n-pentanol), the phenols removal efficiencies are observably better than that using methyl isobutyl ketone (MIBK) or diisopropyl ether (DIPE). The total phenols concentration of coal gasification wastewater can be removed from 6273 mg/L to less than 300 mg/L after two-stage extraction. In addition, Solvent Mixture (MPK, n-pentanol) can also achieve the total phenols target if the volume fraction of n-pentanol was no more than ...
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Structural Characteristic Integrated Computer-Aided Molecular Design for Phenols Removal Considering Synergistic Effect
2018Co-Authors: Chao Guo, Yinshuang Zhang, Yu Qian, Siyu YangAbstract:Zero liquid discharge (ZLD) of coal chemical wastewater is a significant strategy for sustainable management of water resources. Efficient removal of phenols has high significance for the realization of ZLD. In this study, a method of structural characteristics integrated computer-aided molecular design (CAMD) is used for phenols removal considering synergistic effect. Solvent Mixture for synergistic extraction of phenols by using methyl propyl ketone (MPK) in combination with n-pentanol is proposed with the volume ration of MPK to n-pentanol 8:2. Using Solvent Mixture (80% MPK, 20% n-pentanol), the phenols removal efficiencies are observably better than that using methyl isobutyl ketone (MIBK) or diisopropyl ether (DIPE). The total phenols concentration of coal gasification wastewater can be removed from 6273 mg/L to less than 300 mg/L after two-stage extraction. In addition, Solvent Mixture (MPK, n-pentanol) can also achieve the total phenols target if the volume fraction of n-pentanol was no more than 70%, the wide range volume fraction of which has potential application in industry
Carrie L Mccarthy - One of the best experts on this subject based on the ideXlab platform.
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solution deposited cu2basns4 xsex from a thiol amine Solvent Mixture
Chemistry of Materials, 2018Co-Authors: Carrie L Mccarthy, Richard L BrutcheyAbstract:The discovery that cation antisite defects in Cu2ZnSn(S,Se)4 (CZTS) thin film photovoltaic absorbers are a major contributor to lower than expected device efficiencies has spurred recent interest in material design to develop similar materials that maintain the desirable optoelectronic properties of CZTS, while mitigating this source of loss. Recent reports have shown that this can be accomplished by replacing zinc with a larger cation of the same valency, such as barium, to give Cu2BaSn(S,Se)4. Until this point, Cu2BaSn(S,Se)4 has only been synthesized by solid-state and physical deposition methods. Herein, we use a thiol-amine Solvent Mixture to dissolve bulk Cu2S, BaS, and SnO to prepare a precursor ink that upon low temperature annealing yields phase-pure trigonal Cu2BaSnS4-xSex (nominal x = 0, 1, 2, 3) alloys with tunable direct band gaps from 1.56 – 1.86 eV.
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dissolution of sn sno and sns in a thiol amine Solvent Mixture insights into the identity of the molecular solutes for solution processed sns
Inorganic Chemistry, 2016Co-Authors: Jannise J Buckley, Carrie L Mccarthy, Joselyn Del Pilaralbaladejo, Golam Rasul, Richard L BrutcheyAbstract:Binary Solvent Mixtures of alkanethiols and 1,2-ethylenediamine have the ability to readily dissolve metals, metal chalcogenides, and metal oxides under ambient conditions to enable the facile solution processing of semiconductor inks; however, there is little information regarding the chemical identity of the resulting solutes. Herein, we examine the molecular solute formed after dissolution of Sn, SnO, and SnS in a binary Solvent Mixture comprised of 1,2-ethanedithiol (EDT) and 1,2-ethylenediamine (en). Using a combination of solution 119Sn NMR and Raman spectroscopies, bis(1,2-ethanedithiolate)tin(II) was identified as the likely molecular solute present after the dissolution of Sn, SnO, and SnS in EDT–en, despite the different bulk material compositions and oxidation states (Sn0 and Sn2+). All three semiconductor inks can be converted to phase-pure, orthorhombic SnS after a mild annealing step (∼350 °C). This highlights the ability of the EDT–en Solvent Mixture to dissolve and convert a variety of low...
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solution phase conversion of bulk metal oxides to metal chalcogenides using a simple thiol amine Solvent Mixture
ChemInform, 2015Co-Authors: Carrie L Mccarthy, David H Webber, Emily C Schueller, Richard L BrutcheyAbstract:A Solvent Mixture of en together with Et-SH, HS-(CH2)2-OH, or HS-(CH2)2-SH is used to dissolve Cu2O, ZnO, GeO2, As2O3, Ag2O, CdO, SnO, Sb2O3, PbO, and Bi2O3 at 25 °C.
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solution phase conversion of bulk metal oxides to metal chalcogenides using a simple thiol amine Solvent Mixture
Angewandte Chemie, 2015Co-Authors: Carrie L Mccarthy, David H Webber, Emily C Schueller, Richard L BrutcheyAbstract:A thiol-amine Solvent Mixture is used to dissolve ten inexpensive bulk oxides (Cu2O, ZnO, GeO2, As2O3, Ag2O, CdO, SnO, Sb2O3, PbO, and Bi2O3) under ambient conditions. Dissolved oxides can be converted to the corresponding sulfides using the thiol as the sulfur source, while selenides and tellurides can be accessed upon mixing with a stoichiometric amount of dissolved selenium or tellurium. The practicality of this method is illustrated by solution depositing Sb2Se3 thin films from compound inks of dissolved Sb2O3 and selenium that give high photoelectrochemical current response. The direct band gap of the resulting material can be tuned from 1.2-1.6 eV by modulating the ink formulation to give compositionally controlled Sb2Se(3-x)S(x) alloys.
Y D Kolekar - One of the best experts on this subject based on the ideXlab platform.
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spray deposited hausmannite mn3o4 thin films using aqueous organic Solvent Mixture for supercapacitor applications
Electrochimica Acta, 2016Co-Authors: Abhijit A Yadav, S N Jadhav, D M Chougule, P D Patil, U J Chavan, Y D KolekarAbstract:Abstract Manganese oxide (Mn 3 O 4 ) is considered one of the most promising materials for high-performance supercapacitors due to its extraordinary theoretical specific capacitance, low-cost, environmental benignity and natural abundance. Mn 3 O 4 thin films have been deposited by spray pyrolysis using aqueous/organic Solvent Mixture. These films were characterized for structural, morphological, optical and electrical measurements. The electrochemical performance of the supercapacitor was studied by using cyclic voltammetry curves recorded at different scan rates. The porous Mn 3 O 4 thin film electrode exhibits significantly improved supercapacitive performance in 1 M Na 2 SO 4 electrolyte with highest specific capacitance of 394 F g −1 at scan rate of 10 m Vs −1 for film deposited at 350 °C. The specific energy and specific power are found to be 8.27 Wh kg −1 and 850 W kg −1 , respectively, at a current density of 1 A g −1 . The specific capacitance of the Mn 3 O 4 electrode maintains 93.01% of its initial value after 1000 cycles, at a current density of 1 A g −1 showing a good cycling stability.
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Spray deposited Hausmannite Mn3O4 thin films using aqueous/organic Solvent Mixture for supercapacitor applications
Electrochimica Acta, 2016Co-Authors: Abhijit A Yadav, S N Jadhav, D M Chougule, P D Patil, U J Chavan, Y D KolekarAbstract:Abstract Manganese oxide (Mn 3 O 4 ) is considered one of the most promising materials for high-performance supercapacitors due to its extraordinary theoretical specific capacitance, low-cost, environmental benignity and natural abundance. Mn 3 O 4 thin films have been deposited by spray pyrolysis using aqueous/organic Solvent Mixture. These films were characterized for structural, morphological, optical and electrical measurements. The electrochemical performance of the supercapacitor was studied by using cyclic voltammetry curves recorded at different scan rates. The porous Mn 3 O 4 thin film electrode exhibits significantly improved supercapacitive performance in 1 M Na 2 SO 4 electrolyte with highest specific capacitance of 394 F g −1 at scan rate of 10 m Vs −1 for film deposited at 350 °C. The specific energy and specific power are found to be 8.27 Wh kg −1 and 850 W kg −1 , respectively, at a current density of 1 A g −1 . The specific capacitance of the Mn 3 O 4 electrode maintains 93.01% of its initial value after 1000 cycles, at a current density of 1 A g −1 showing a good cycling stability.
