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1. (WO2018101887) MULTI-LAYERED METAL-CARBON MATERIALS-BASED NANOARCHITECTURES
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Pub. No.: WO/2018/101887 International Application No.: PCT/SG2017/050588
Publication Date: 07.06.2018 International Filing Date: 29.11.2017
IPC:
C01B 32/182 (2017.01) ,B01J 23/38 (2006.01) ,B82Y 30/00 (2011.01) ,B82Y 40/00 (2011.01)
[IPC code unknown for C01B 32/182]
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23
Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/113
38
of noble metals
B PERFORMING OPERATIONS; TRANSPORTING
82
NANO-TECHNOLOGY
Y
SPECIFIC USES OR APPLICATIONS OF NANO-STRUCTURES; MEASUREMENT OR ANALYSIS OF NANO-STRUCTURES; MANUFACTURE  OR TREATMENT OF NANO-STRUCTURES
30
Nano-technology for materials or surface science, e.g. nano-composites
B PERFORMING OPERATIONS; TRANSPORTING
82
NANO-TECHNOLOGY
Y
SPECIFIC USES OR APPLICATIONS OF NANO-STRUCTURES; MEASUREMENT OR ANALYSIS OF NANO-STRUCTURES; MANUFACTURE  OR TREATMENT OF NANO-STRUCTURES
40
Manufacture or treatment of nano-structures
Applicants:
NANYANG TECHNOLOGICAL UNIVERSITY [SG/SG]; 50 Nanyang Avenue Singapore 639798, SG
Inventors:
TAN, Thatt Yang Timothy; SG
ZENG, Zhiping; SG
Agent:
KINNAIRD, James Welsh; SG
Priority Data:
10201610003S29.11.2016SG
Title (EN) MULTI-LAYERED METAL-CARBON MATERIALS-BASED NANOARCHITECTURES
(FR) NANOARCHITECTURES MULTICOUCHES À BASE DE MATÉRIAUX MÉTAL-CARBONE
Abstract:
(EN) Disclosed herein is a multi-layered composite thin film material formed from graphene quantum dots (GQDs) and metal nanocrystals in a layer-by-layer design, wherein the metal nanocrystals can be selected from the group consisting of Ru, Rh, Os, Ir, Pd, Au, Ag and Pt. In a preferred embodiment, the multi-layered composite thin film material is prepared via a facile, green, and easily accessible layer-by-layer (LbL) self-assembly strategy. In this strategy, positively charged GOQDs and negatively charged metal nanocrystals are alternately and uniformly integrated with each other in a "face- to-face" stacked fashion under substantial electrostatic attractive interaction, and then the obtained GOQDs/metal composite thin film is calcined into GQDs/metal composite thin film. The composite thin film material disclosed herein may be used to catalyse a wide range or reactions, including selective reduction of aromatic nitro compounds in water and electrocatalytic oxidation of methanol at ambient conditions.
(FR) L'invention concerne un matériau de film mince composite multicouche formé à partir de boîtes quantiques de graphène (GQD) et de nanocristaux métalliques de conception couche par couche, où les nanocristaux métalliques peuvent être choisis dans le groupe constitué par Ru, Rh, Os, Ir, Pd, Au, Ag et Pt. Dans un mode de réalisation préféré, le matériau de film mince composite multicouche est préparé par le biais d'une stratégie d'auto-assemblage couche par couche (LbL) simple, écologique et facilement accessible. Dans cette stratégie, des GOQD à charge positive et des nanocristaux métalliques à charge négative sont intégrés en alternance et de manière homogène les uns avec les autres en mode empilé "face-à-face" basé sur une interaction attractive électrostatique substantielle, puis le film mince composite GOQD/métal obtenu est calciné pour obtenir un film mince composite GQD/métal. Le matériau de film mince composite ci-décrit peut être utilisé pour catalyser un grand nombre de réactions, allant de la réduction sélective des composés nitro aromatiques dans l'eau à l'oxydation électrocatalytique du méthanol en conditions ambiantes.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)