Abdessadek Lachgar | Wake Forest University (original) (raw)
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Papers by Abdessadek Lachgar
RSC Advances, 2015
The heterojunction formed between Bi2O3 and WO3 shows visible-light driven enhanced photocatalyti... more The heterojunction formed between Bi2O3 and WO3 shows visible-light driven enhanced photocatalytic performance in degradation of Rhodamine B (RhB) and 4 nitroaniline (4-NA).
This article appeared in a journal published by Elsevier. The attached copy is furnished to the a... more This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are
![Research paper thumbnail of Synthesis and Crystal Structures of ATi [ Nb 6 Cli 8 ] Compounds](https://attachments.academia-assets.com/80269350/thumbnails/1.jpg)
](Z. Naturforsch. 55 b, 139-144 (2000); received September 13, 1999 Niobium, Titanium, Cluster, Chl... more Z. Naturforsch. 55 b, 139-144 (2000); received September 13, 1999 Niobium, Titanium, Cluster, Chlorides, Synthesis New quaternary niobium cluster chlorides corresponding to the general formula ATi[Nb6Clis] (A = K, Rb, Cs, In, Tl) have been synthesized in sealed quartz tubes at 720 °C, starting from stoichiometric amounts of NbCls, niobium metal, TiCb, and AC1 (A = K, Rb, Cs), or In or Tl metals. The structures of RbTi[Nb6Clis] and CsTifNböClis] were determined using single crystal X-ray diffraction. RbTifNböClis] crystallizes in the rhombohedral crystal system, space group R3 (no. 148), Z = 3, with lattice parameters: a = 9.163(4), c = 25.014(14) A (hexagonal setting). The structure refinement converged to R] = 0.044 and wRi = 0.058 for all data. In this structure, discrete [NböClig]4cluster units are linked by Rb+ and Ti3+ cations, located in a 12coordinated anticubeoctahedral and octahedral chloride coordination environment, respectively. In contrast, CsTifNböClis] crystallizes i...
Zeitschrift Fur Anorganische Und Allgemeine Chemie, Mar 1, 1996
Inorganica Chimica Acta, 2011
Five new isostructural two-dimensional lanthanide-based coordination polymers with the formula Ln... more Five new isostructural two-dimensional lanthanide-based coordination polymers with the formula Ln2(F4BDC)3(DEF)2(EtOH)2-2(DEF) (Ln=Tb, 1; Gd, 2; Eu, 3; La, 4; Nd, 5; F4BDC2−=2,3,5,6-tetrafluoro-1,4-benzenedicarboxylate ligands; DEF=N,N′-diethylformamide), have been synthesized by reaction of Ln(NO3)3 and F4BDC in a DEF/EtOH solvent mixture. The compounds were characterized by single-crystal and powder X-ray diffraction. In all cases, the metal ion is coordinated by nine oxygen atoms
Solid State Ionics, 2013
This article appeared in a journal published by Elsevier. The attached copy is furnished to the a... more This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are
Electrocatalysis
Copper(I) oxide (Cu 2 O) was electrochemically deposited on fluorine-doped tin oxide (FTO) glass ... more Copper(I) oxide (Cu 2 O) was electrochemically deposited on fluorine-doped tin oxide (FTO) glass electrode and covered with a thin layer of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). The electrode was studied in the photoelectrocatalytic reduction of CO 2. Methanol was obtained as the major product with a concentration of 460 μmol L −1 with a photoconversion yield of 12% after 60 min of reaction under the conditions of UV-Vis (125 W Hg high pressure lamp) and application of 0.0 V vs Ag/AgCl in 3.0 mol L −1 KCl in buffer sodium carbonate/sodium bicarbonate 0.1 mol L −1 saturated with CO 2 gas. The PEDOT:PSS has led to a significant improvement in CO 2 conversion due to rapid transfer of photogenerated holes. Consequently, the thin layer of PEDOT:PSS also reduces the photooxidation of Cu 2 O to CuO. The Cu 2 O/PEDOT:PSS photocatalytic system was found to have excellent photostability. Similar yield of alcohol was observed after reusing the catalyst six times.
Carbon Resources Conversion
Journal of Chemical Crystallography
Sustainable Energy & Fuels
Visible light active photocatalytic performance of g-C3N4/NSON-X heterojunctions.
J Chem Crystallography, 2011
A new 1D coordination polymer [Me 4 N] 3 {[Mn(L)][Nb 6 Cl 12 (CN) 6 ]}Á3MeCNÁH 2 O (1) (L = acace... more A new 1D coordination polymer [Me 4 N] 3 {[Mn(L)][Nb 6 Cl 12 (CN) 6 ]}Á3MeCNÁH 2 O (1) (L = acacen 2-= N,N 0-bis(acetylacetone)-1,2-ethylenediimine) was synthesized from reaction between [Me 4 N] 4 [Nb 6 Cl 12 (CN) 6 ] and [Mn(L)]Cl in acetonitrile. The crystal structure of 1 was determined from single-crystal X-ray diffraction analysis. Compound 1 crystallizes in the tetragonal system, space group I4 1 /a (No. 88), a = 30.585(4), c = 27.348(6) Å , V = 25582(7) Å 3 , Z = 16. Its 1D framework consists of chains formed of metal clusters and Mn(L) complexes linked to each other by Nb-C:N-Mn-N:C-Nb linkages. The chains extend along the a and b crystallographic axes and are related to each other by 4 1 screw axis. The chains are held together by [Me 4 N] ? cations and solvent molecules located in channels running between the chains. 1 and the previously reported 1D coordination polymer [Me 4 N] 3 {[Mn(5-MeOsalen)][Nb 6 Cl 12 (CN) 6 ]} (3) differ from each other in terms of their synthesis and their structural characteristics.
Inorg Chem, 1991
... (3) Adams, D. M. Inorganic Solids; J. Wiley: London, 1974; p 56. (4) Lewis. J.; Machin, D. J.... more ... (3) Adams, D. M. Inorganic Solids; J. Wiley: London, 1974; p 56. (4) Lewis. J.; Machin, D. J.; Newnham, 1. E.; Nyholm, R. S. J. Chem. Soc. ... 1981, 37, 331. (13) Poeppelmeier, K. R.; Corbett, J. D.; McMullen, T. P.; Torgeson, DR; Barnes, R. G. Inorg. Chem. 1980, 19, 129. ...
J Alloys Compounds, 2002
ABSTRACT
Inorganic Chemistry, 2003
Inorganic Chemistry, 2003
RSC Advances, 2015
The heterojunction formed between Bi2O3 and WO3 shows visible-light driven enhanced photocatalyti... more The heterojunction formed between Bi2O3 and WO3 shows visible-light driven enhanced photocatalytic performance in degradation of Rhodamine B (RhB) and 4 nitroaniline (4-NA).
This article appeared in a journal published by Elsevier. The attached copy is furnished to the a... more This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are
Z. Naturforsch. 55 b, 139-144 (2000); received September 13, 1999 Niobium, Titanium, Cluster, Chl... more Z. Naturforsch. 55 b, 139-144 (2000); received September 13, 1999 Niobium, Titanium, Cluster, Chlorides, Synthesis New quaternary niobium cluster chlorides corresponding to the general formula ATi[Nb6Clis] (A = K, Rb, Cs, In, Tl) have been synthesized in sealed quartz tubes at 720 °C, starting from stoichiometric amounts of NbCls, niobium metal, TiCb, and AC1 (A = K, Rb, Cs), or In or Tl metals. The structures of RbTi[Nb6Clis] and CsTifNböClis] were determined using single crystal X-ray diffraction. RbTifNböClis] crystallizes in the rhombohedral crystal system, space group R3 (no. 148), Z = 3, with lattice parameters: a = 9.163(4), c = 25.014(14) A (hexagonal setting). The structure refinement converged to R] = 0.044 and wRi = 0.058 for all data. In this structure, discrete [NböClig]4cluster units are linked by Rb+ and Ti3+ cations, located in a 12coordinated anticubeoctahedral and octahedral chloride coordination environment, respectively. In contrast, CsTifNböClis] crystallizes i...
Zeitschrift Fur Anorganische Und Allgemeine Chemie, Mar 1, 1996
Inorganica Chimica Acta, 2011
Five new isostructural two-dimensional lanthanide-based coordination polymers with the formula Ln... more Five new isostructural two-dimensional lanthanide-based coordination polymers with the formula Ln2(F4BDC)3(DEF)2(EtOH)2-2(DEF) (Ln=Tb, 1; Gd, 2; Eu, 3; La, 4; Nd, 5; F4BDC2−=2,3,5,6-tetrafluoro-1,4-benzenedicarboxylate ligands; DEF=N,N′-diethylformamide), have been synthesized by reaction of Ln(NO3)3 and F4BDC in a DEF/EtOH solvent mixture. The compounds were characterized by single-crystal and powder X-ray diffraction. In all cases, the metal ion is coordinated by nine oxygen atoms
Solid State Ionics, 2013
This article appeared in a journal published by Elsevier. The attached copy is furnished to the a... more This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are
Electrocatalysis
Copper(I) oxide (Cu 2 O) was electrochemically deposited on fluorine-doped tin oxide (FTO) glass ... more Copper(I) oxide (Cu 2 O) was electrochemically deposited on fluorine-doped tin oxide (FTO) glass electrode and covered with a thin layer of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). The electrode was studied in the photoelectrocatalytic reduction of CO 2. Methanol was obtained as the major product with a concentration of 460 μmol L −1 with a photoconversion yield of 12% after 60 min of reaction under the conditions of UV-Vis (125 W Hg high pressure lamp) and application of 0.0 V vs Ag/AgCl in 3.0 mol L −1 KCl in buffer sodium carbonate/sodium bicarbonate 0.1 mol L −1 saturated with CO 2 gas. The PEDOT:PSS has led to a significant improvement in CO 2 conversion due to rapid transfer of photogenerated holes. Consequently, the thin layer of PEDOT:PSS also reduces the photooxidation of Cu 2 O to CuO. The Cu 2 O/PEDOT:PSS photocatalytic system was found to have excellent photostability. Similar yield of alcohol was observed after reusing the catalyst six times.
Carbon Resources Conversion
Journal of Chemical Crystallography
Sustainable Energy & Fuels
Visible light active photocatalytic performance of g-C3N4/NSON-X heterojunctions.
J Chem Crystallography, 2011
A new 1D coordination polymer [Me 4 N] 3 {[Mn(L)][Nb 6 Cl 12 (CN) 6 ]}Á3MeCNÁH 2 O (1) (L = acace... more A new 1D coordination polymer [Me 4 N] 3 {[Mn(L)][Nb 6 Cl 12 (CN) 6 ]}Á3MeCNÁH 2 O (1) (L = acacen 2-= N,N 0-bis(acetylacetone)-1,2-ethylenediimine) was synthesized from reaction between [Me 4 N] 4 [Nb 6 Cl 12 (CN) 6 ] and [Mn(L)]Cl in acetonitrile. The crystal structure of 1 was determined from single-crystal X-ray diffraction analysis. Compound 1 crystallizes in the tetragonal system, space group I4 1 /a (No. 88), a = 30.585(4), c = 27.348(6) Å , V = 25582(7) Å 3 , Z = 16. Its 1D framework consists of chains formed of metal clusters and Mn(L) complexes linked to each other by Nb-C:N-Mn-N:C-Nb linkages. The chains extend along the a and b crystallographic axes and are related to each other by 4 1 screw axis. The chains are held together by [Me 4 N] ? cations and solvent molecules located in channels running between the chains. 1 and the previously reported 1D coordination polymer [Me 4 N] 3 {[Mn(5-MeOsalen)][Nb 6 Cl 12 (CN) 6 ]} (3) differ from each other in terms of their synthesis and their structural characteristics.
Inorg Chem, 1991
... (3) Adams, D. M. Inorganic Solids; J. Wiley: London, 1974; p 56. (4) Lewis. J.; Machin, D. J.... more ... (3) Adams, D. M. Inorganic Solids; J. Wiley: London, 1974; p 56. (4) Lewis. J.; Machin, D. J.; Newnham, 1. E.; Nyholm, R. S. J. Chem. Soc. ... 1981, 37, 331. (13) Poeppelmeier, K. R.; Corbett, J. D.; McMullen, T. P.; Torgeson, DR; Barnes, R. G. Inorg. Chem. 1980, 19, 129. ...
J Alloys Compounds, 2002
ABSTRACT
Inorganic Chemistry, 2003
Inorganic Chemistry, 2003