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21. A Cu(ii)-MOF capable of fixing CO₂ from air and showing high capacity H₂ and CO₂ adsorption

Author:
SharmaThese authors contributed equally to this work., Vivekanand; De, Dinesh; Saha, Ranajit; Das, Ranjita; Chattaraj, Pratim Kumar; Bharadwaj, Parimal K.
Source:
Chemical communications 2017 v.53 no.100 pp. 13371-13374
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; adsorption; air; ambient temperature; carbonates; chemical reactions; copper; epoxides; hydrogen;     Show all 9 Subjects
Abstract:
... A porous Cu(ii)-MOF shows an adsorption of 6.6 wt% of H₂ at 77 K and 62 bar and a very high 60 wt% of CO₂ at 298 K and 32 bar. When air is bubbled into a suspension of the activated MOF in the presence of different epoxides at room temperature, the CO₂ in air is readily converted into the corresponding cyclic carbonates. ...
DOI:
10.1039/c7cc08315g

22. Facile synthesis of NHC-stabilized Ni nanoparticles and their catalytic application in the Z-selective hydrogenation of alkynes

Author:
de los BernardosThese authors contributed equally to the experimental work., Miriam Díaz; Pérez-Rodríguez, Sara; Gual, Aitor; Claver, Carmen; Godard, Cyril
Source:
Chemical communications 2017 v.53 no.56 pp. 7894-7897
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; alkynes; carbenes; catalytic activity; decarboxylation; heterocyclic nitrogen compounds; hydrogen; hydrogenation; nanoparticles; nickel; zwitterions;     Show all 11 Subjects
Abstract:
... Well defined Ni nanoparticles (NiNPs) stabilized with N-heterocyclic carbenes (NHCs) have been synthesized through a new methodology involving the decarboxylation of a zwitterionic CO₂ adduct. Their catalytic performance was tested in the partial hydrogenation of alkynes into (Z)-alkenes under very mild reaction conditions (50 °C and 5 bar H₂ pressure), providing excellent activities and selectivi ...
DOI:
10.1039/c7cc01779k

23. Crystalline nanotubular framework constructed by cucurbit[8]uril for selective CO₂ adsorption

Author:
Wang, Pinpin; Wu, Yunlong; Zhao, Yanxia; Yu, Yang; Zhang, Mingming; Cao, Liping
Source:
Chemical communications 2017 v.53 no.40 pp. 5503-5506
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; adsorption; chemical reactions; hydrogen; macrocyclic compounds; molecular chaperones; nitrogen;     Show all 7 Subjects
Abstract:
... A crystalline nanotubular framework was constructed by cucurbit[8]uril (CB[8]) molecules in the presence of a molecular chaperone. Compared with amorphous CB[8], the framework exhibits highly selective adsorption for CO₂ over N₂, CH₄, and H₂. ...
DOI:
10.1039/c7cc02074k

24. Phenylamine-functionalized mesoporous silica supported PdAg nanoparticles: a dual heterogeneous catalyst for formic acid/CO₂-mediated chemical hydrogen delivery/storage

Author:
Mori, Kohsuke; Masuda, Shinya; Tanaka, Hiromasa; Yoshizawa, Kazunari; Che, Michel; Yamashita, Hiromi
Source:
Chemical communications 2017 v.53 no.34 pp. 4677-4680
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; aniline; catalysts; chemical reactions; formic acid; hydrogen; moieties; nanoparticles; porous media; silica;     Show all 10 Subjects
Abstract:
... A PdAg-based nanoparticle catalyst supported on the mesoporous silica material, SBA-15, modified with a weakly basic phenylamine functional group has been developed as a dual heterogeneous catalyst for the H₂ delivery and H₂ storage reactions mediated by formic acid and carbon dioxide. ...
DOI:
10.1039/c7cc00864c

25. A facile approach for the synthesis of hydroxyl-rich microporous organic networks for efficient CO₂ capture and H₂ storage

Author:
Mondal, Sujan; Kundu, Sudipta K.; Bhaumik, Asim
Source:
Chemical communications 2017 v.53 no.18 pp. 2752-2755
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; Lewis bases; adsorption; aromatic compounds; catalytic activity; condensation reactions; hydrogen; moieties; porous media;     Show all 9 Subjects
Abstract:
... A new series of porous organic networks (PONs) internally decorated with several free –OH functional groups has been synthesized through acid catalyzed condensation reaction of terephthalaldehyde and nucleophilic aromatic compounds. These materials possess high Brunauer–Emmett–Teller specific surface areas (592–865 m² g⁻¹) and showed maximum CO₂ adsorption capacity of 4.31 mmol g⁻¹ and H₂ uptake o ...
DOI:
10.1039/c6cc09660c

26. A one-dimensional material as a nano-scaffold and a pseudo-seed for facilitated growth of ultrathin, mechanically reinforced molecular sieving membranes

Author:
Shamsaei, Ezzatollah; Lin, Xiaocheng; Wan, Li; Tong, Yuping; Wang, Huanting
Source:
Chemical communications 2016 v.52 no.95 pp. 13764-13767
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; chemical reactions; hydrogen; methane; nitrogen; propane; sieving;     Show all 7 Subjects
Abstract:
... A new pseudo-seeding and nano-scaffolding method was developed to synthesize thin ZIF-8 hybrid membranes (100–200 nm) with remarkable mechanical and structural stability and high H₂ permeance (2.87 × 10⁻⁵ mol m⁻² s⁻¹ Pa⁻¹) and selectivity over CO₂ (14), N₂ (18), CH₄ (35), C₃H₆ (52.4) and C₃H₈ (950.1). ...
DOI:
10.1039/c6cc07709a

27. Adsorption of two gas molecules at a single metal site in a metal–organic framework

Author:
Runčevski, Tomče; Kapelewski, Matthew T.; Torres-Gavosto, Rodolfo M.; Tarver, Jacob D.; Brown, Craig M.; Long, Jeffrey R.
Source:
Chemical communications 2016 v.52 no.53 pp. 8251-8254
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; adsorption; chemical reactions; coordination compounds; hydrogen; methane;     Show all 6 Subjects
Abstract:
... One strategy to markedly increase the gas storage capacity of metal–organic frameworks is to introduce coordinatively-unsaturated metal centers capable of binding multiple gas molecules. Herein, we provide an initial demonstration that a single metal site within a framework can support the terminal coordination of two gas molecules—specifically hydrogen, methane, or carbon dioxide. ...
DOI:
10.1039/c6cc02494g

28. Improving the hydrogen selectivity of graphene oxide membranes by reducing non-selective pores with intergrown ZIF-8 crystals

Author:
Wang, Xuerui; Chi, Chenglong; Tao, Jifang; Peng, Yongwu; Ying, Shaoming; Qian, Yuhong; Dong, Jinqiao; Hu, Zhigang; Gu, Yuandong; Zhao, Dan
Source:
Chemical communications 2016 v.52 no.52 pp. 8087-8090
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; chemical reactions; crystals; graphene oxide; hydrogen; methane; nitrogen;     Show all 7 Subjects
Abstract:
... We report the intergrowth of ZIF-8 crystals on ultrathin graphene oxide (GO) membranes, which helps to reduce the non-selective pores of pristine GO membranes leading to gas selectivities as high as 406, 155, and 335 for H₂/CO₂, H₂/N₂, and H₂/CH₄ mixtures, respectively. ...
DOI:
10.1039/c6cc02013e

29. Electrocatalytic reduction of CO₂ using Mn complexes with unconventional coordination environments

Author:
Rao, Gyandshwar Kumar; Pell, Wendy; Korobkov, Ilia; Richeson, Darrin
Source:
Chemical communications 2016 v.52 no.51 pp. 8010-8013
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; carbon monoxide; chemical reactions; geometry; hydrogen; ligands; manganese;     Show all 7 Subjects
Abstract:
... New complexes, Mn{κ³-[2,6-{Ph₂PNMe}₂(NC₅H₃)]}(CO)₃⁺Br⁻ (1⁺Br⁻) and MnBr{κ²-(Ph₂P)NMe(NC₅H₄)}(CO)₃ (2), are reported and present new ligand environments for CO₂ electrocatalytic reduction to CO. Compound 1⁺ presents a unique metal geometry for CO production (96%) in the absence of added water while 2 required addition of water and generated both CO and H₂ products. ...
DOI:
10.1039/c6cc03827a

30. Soluble, microporous, Tröger's Base copolyimides with tunable membrane performance for gas separation

Author:
ZhuangEqually contributed to this work., Yongbing; Seong, Jong Geun; Do, Yu Seong; Lee, Won Hee; Lee, Moon Joo; Cui, Zhaoliang; Lozano, Angel E.; Guiver, Michael D.; Lee, Young Moo
Source:
Chemical communications 2016 v.52 no.19 pp. 3817-3820
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; chemical reactions; hydrogen; porous media; thermal properties;     Show all 5 Subjects
Abstract:
... A facile two-step synthesis beginning with commercial monomers to prepare copolyimides by Tröger's Base (TB) formation provides membranes for the first time with tunable gas transport relative to hydrogen separations, CO₂ plasticization resistance, and good mechanical and thermal properties. ...
DOI:
10.1039/c5cc09783e

31. A homochiral vanadium–salen based cadmium bpdc MOF with permanent porosity as an asymmetric catalyst in solvent-free cyanosilylation

Author:
Bhunia, Asamanjoy; Dey, Subarna; Moreno, José María; Diaz, Urbano; Concepcion, Patricia; Van Hecke, Kristof; Janiak, Christoph; Van Der Voort, Pascal
Source:
Chemical communications 2016 v.52 no.7 pp. 1401-1404
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; adsorption; cadmium; catalysts; chemical reactions; hydrogen; porosity; topology;     Show all 8 Subjects
Abstract:
... A homochiral vanadium–salen based MOF with the pcu topology is constructed via in situ synthesis under solvothermal conditions. The synthesized MOF exhibits BET surface areas of 574 m² g⁻¹, showing the highest H₂ adsorption capacity (1.05 wt% at 77 K, 1 bar) and the highest CO₂ uptake (51 cm³ g⁻¹ at 273 K, 1 bar) for currently known salen-based MOFs. This framework shows excellent performance as a ...
DOI:
10.1039/c5cc09459c

32. Electrocatalytic and photocatalytic hydrogen evolution integrated with organic oxidation

Author:
YouThese authors contributed equally., Bo; Han, Guanqun; Sun, Yujie
Source:
Chemical communications 2018 v.54 no.47 pp. 5943-5955
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; ammonia; hydrazine; photocatalysis; reactive oxygen species; carbon; value added; electrolysis; alcohols; hydrogen; energy efficiency; oxidation; oxygen; fossil fuels; renewable energy sources; hydrogen production; emissions; biomass; urea; oxygen production; anodes;     Show all 21 Subjects
Abstract:
... Renewable energy-driven hydrogen production from electrocatalytic and photocatalytic water splitting has been widely recognized as a promising approach to utilize green energy resources and hence reduces our dependence on legacy fossil fuels as well as alleviates net carbon dioxide emissions. The realization of large-scale water splitting, however, is mainly impeded by its slow kinetics, particula ...
DOI:
10.1039/c8cc01830h

33. Molecular engineering for efficient and selective iron porphyrin catalysts for electrochemical reduction of CO₂ to CO

Author:
Ambre, Ram B.; Daniel, Quentin; Fan, Ting; Chen, Hong; Zhang, Biaobiao; Wang, Lei; Ahlquist, Mårten S. G.; Duan, Lele; Sun, Licheng
Source:
Chemical communications 2016 v.52 no.100 pp. 14478-14481
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; carbon monoxide; catalysts; chemical reactions; electrochemistry; electrolysis; engineering; hydrogen; iron; porphyrins;     Show all 10 Subjects
Abstract:
... Iron porphyrins Fe-pE, Fe-mE, and Fe-oE were synthesized and their electrochemical behavior for CO₂ reduction to CO has been investigated. The controlled potential electrolysis of Fe-mE gave exclusive 65% Faradaic efficiency (FE) whereas Fe-oE achieved quasi-quantitative 98% FE (2% H₂) for CO production. ...
DOI:
10.1039/c6cc08099e

34. CO₂ reduction with Re(i)–NHC compounds: driving selective catalysis with a silicon nanowire photoelectrode

Author:
JinThese authors contributed equally to this work., Tong; He, Da; Li, Wei; Stanton, Charles J.; Pantovich, Sebastian A.; Majetich, George F.; Schaefer, Henry F.; Agarwal, Jay; Wang, Dunwei; Li, Gonghu
Source:
Chemical communications 2016 v.52 no.99 pp. 14258-14261
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; adsorption; carbon monoxide; catalysts; catalytic activity; chemical reactions; hydrogen; nanowires; silicon;     Show all 9 Subjects
Abstract:
... The CO₂-reduction activity of two Re(i)–NHC complexes is investigated employing a silicon nanowire photoelectrode to drive catalysis. Photovoltages greater than 440 mV are observed along with excellent selectivity towards CO over H₂ formation. The observed selectivity towards CO production correlates with strong adsorption of the catalysts on the photoelectrode surface. ...
DOI:
10.1039/c6cc08240h

35. Direct synthesis of ethanol via CO₂ hydrogenation using supported gold catalysts

Author:
Wang, Dong; Bi, Qingyuan; Yin, Guoheng; Zhao, Wenli; Huang, Fuqiang; Xie, Xiaoming; Jiang, Mianheng
Source:
Chemical communications 2016 v.52 no.99 pp. 14226-14229
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; catalysts; ethanol; gold; hydrogen; hydrogenation; nanogold; oxygen; synergism; titanium dioxide;     Show all 10 Subjects
Abstract:
... An efficient titania supported Au nanocluster (NC) has been prepared for the direct synthesis of useful EtOH from CO₂ and H₂. The unique creation of an excellent synergistic effect between Au NCs and the underlying TiO₂ support, especially the anatase crystal phase with abundant oxygen vacancies, can achieve the high performance for EtOH synthesis under moderate and practical conditions. ...
DOI:
10.1039/c6cc08161d

36. Molecular engineered nanomaterials for catalytic hydrogen evolution and oxidation

Author:
Coutard, Nathan; Kaeffer, Nicolas; Artero, Vincent
Source:
Chemical communications 2016 v.52 no.95 pp. 13728-13748
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; active sites; catalysts; cobalt; electrochemistry; electrodes; enzymes; hydrogen; hydrogen production; nanomaterials; nickel; oxidation; oxygen;     Show all 13 Subjects
Abstract:
... The active sites of hydrogenases have inspired the design of molecular catalysts for hydrogen evolution and oxidation. In this feature article, we showcase key elements of bio-inspiration before embarking on a tour of a representative series of molecular hydrogen evolving catalysts (HECs) and describing the toolbox available for benchmarking their performances. We then show how such catalysts can ...
DOI:
10.1039/c6cc06311j

37. A bifunctional solid oxide electrolysis cell for simultaneous CO₂ utilization and synthesis gas production

Author:
Sun, Yi-Fei; Wu, Yi-Yang; Zhang, Ya-Qian; Li, Jian-Hui; Luo, Yu; Shi, Yi-Xiang; Hua, Bin; Luo, Jing-Li
Source:
Chemical communications 2016 v.52 no.94 pp. 13687-13690
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; anodes; carbon monoxide; cathodes; chemical reactions; electrolysis; hydrogen; natural gas; synthesis gas;     Show all 9 Subjects
Abstract:
... We hereby report on a pioneering and inspiring solid oxide cell which, assisted by natural gas, utilizes a bifunctional electrolysis cell configuration to effectively consume CO₂ to produce CO at the cathode side and simultaneously synthesize highly valuable syngas (mixture of CO and H₂) at the anode side via a one-step green process. ...
DOI:
10.1039/c6cc03503e

38. Hydrogen evolution from glycerol aqueous solution under aerobic conditions over Pt/TiO₂ and Au/TiO₂ granular photocatalysts

Author:
Sakurai, Hiroaki; Kiuchi, Masato; Heck, Claire; Jin, Tetsuro
Source:
Chemical communications 2016 v.52 no.93 pp. 13612-13615
ISSN:
1364-548X
Subject:
carbon dioxide production,   etc   ; aerobic conditions; aqueous solutions; glycerol; hydrogen; hydrogen production; oxidation; photocatalysts; photoirradiation;     Show all 9 Subjects
Abstract:
... Hydrogen was efficiently evolved from glycerol aqueous solution upon vertical photoirradiation of a Pt/TiO₂ or Au/TiO₂ bed under aerobic conditions. Granular photocatalysts were easily deposited, leading to high H₂ selectivity (80–95%), whereas glycerol oxidation with CO₂ evolution became dominant when suspended powder photocatalysts were used. ...
DOI:
10.1039/c6cc08319f

39. Cationic dirhodium(ii,ii) complexes for the electrocatalytic reduction of CO₂ to HCOOH

Author:
Witt, Suzanne E.; White, Travis A.; Li, Zhanyong; Dunbar, Kim R.; Turro, Claudia
Source:
Chemical communications 2016 v.52 no.82 pp. 12175-12178
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; chemical reactions; electrolysis; formic acid; headspace analysis; hydrogen; ligands;     Show all 7 Subjects
Abstract:
... Two formamidinate bridged dirhodium(ii,ii) complexes with chelating diimine ligands L, [Rh₂(μ-DTolF)₂(L)₂]²⁺, were shown to electrocatalytically reduce CO₂ in the presence of H₂O. Analysis of the reaction mixture and headspace following bulk electrolysis revealed H₂ and HCOOH as the major products. The variation in relative product formation is discussed. ...
DOI:
10.1039/c6cc03253b

40. Photocatalytic decarboxylation of lactic acid by Pt/TiO₂

Author:
Liu, Kaituo; Litke, Anton; Su, Yaqiong; van Campenhout, Bart G.; Pidko, Evgeny A.; Hensen, Emiel J. M.
Source:
Chemical communications 2016 v.52 no.78 pp. 11634-11637
ISSN:
1364-548X
Subject:
carbon dioxide,   etc   ; acetaldehyde; decarboxylation; dehydrogenation; ethanol; hydrogen; lactic acid; photocatalysis; photolysis;     Show all 9 Subjects
Abstract:
... A photocatalytic route for the conversion of lactic acid to acetaldehyde in water is demonstrated. Direct UV photolysis of lactic acid yields CO₂ and ethanol via a radical mechanism. Pt/TiO₂ considerably increases the rate of lactic acid decarboxylation with acetaldehyde, H₂ and CO₂ as the main products. A concerted photodecarboxylation/dehydrogenation mechanism is proposed. ...
DOI:
10.1039/c6cc06530a