Unique perforated graphene derived from Bougainvillea flowers for high-power supercapacitors: a green approach

Nanoscale ◽  
2017 ◽  
Vol 9 (14) ◽  
pp. 4801-4809 ◽  
Author(s):  
Rajendra P. Panmand ◽  
Purnima Patil ◽  
Yogesh Sethi ◽  
Sunil R. Kadam ◽  
Milind V. Kulkarni ◽  
...  
Keyword(s):  
Surface Area ◽  
High Power ◽  
High Surface ◽  
High Surface Area ◽  
Single Step ◽  
Step Method ◽  
Green Approach ◽  
Template Free ◽  
First Time

Herein, we demonstrated a green approach for the synthesis of high surface area (850 m2 g−1) mesoporous perforated graphene (PG) from Bougainvillea flower for the first time using a template free single-step method.

Template-free synthesis of nanocage-like g-C3N4 with high surface area and nitrogen defects for enhanced photocatalytic H2 activity

2019 ◽  
Vol 7 (10) ◽  
pp. 5324-5332 ◽  
Author(s):  
Mao Wu ◽  
Yansheng Gong ◽  
Tao Nie ◽  
Jin Zhang ◽  
Rui Wang ◽  
...  
Keyword(s):  
Surface Area ◽  
Carbon Nitride ◽  
High Surface ◽  
High Surface Area ◽  
Cost Effective ◽  
Porous Graphitic Carbon ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Template Free

Nanocage-like 3D porous graphitic carbon nitride (g-C3N4) with a high surface area and nitrogen defects was successfully prepared via a novel, template-free, cost-effective and hydrothermal-copolymerization route.

scholarly journals A succinct strategy for construction of nanoporous ionic organic networks from a pyrylium intermediate

2019 ◽  
Vol 55 (89) ◽  
pp. 13450-13453 ◽  
Author(s):  
Siying Che ◽  
Zhenzhen Yang ◽  
Ilja Popovs ◽  
Huimin Luo ◽  
Yali Luo ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Pyridinium Salt ◽  
Hydroxyl Group ◽  
Template Free ◽  
Organic Networks

A two-step strategy under metal- and template-free conditions is presented for the fabrication of hydroxyl group and pyridinium salt-bifunctionalized nanoporous ionic organic networks with high surface area.

Facile Synthesis of Activated Carbon from Swamp Taro Stalk via Single Step ZnCl2 Activation

2016 ◽  
Vol 857 ◽  
pp. 475-479 ◽  
Author(s):  
M.S. Mohammed Yahya ◽  
Jeyashelly Andas ◽  
Ghani Zaidi Ab
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Total Pore Volume ◽  
Structure Type ◽  
Sem Analysis ◽  
Single Step ◽  
Bet Surface Area ◽  
Type Iv

In this work, mesoporous activated carbon with high surface area was synthesized from swamp taro stalk by single step ZnCl2 activation. The synthesized activated carbon was characterized by Na2S2O3 volumetric method, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM) and N2 adsorption-desorption analyses. Under the single step ZnCl2 activation, the registered iodine number, BET surface area, total pore volume and pore diameter were 1087.57 mgg-1, 1242.26 m2g-1, 0.73cm3g-1 and 3.72 nm respectively with yield of 25.34%. SEM analysis evidenced the well-formation of porous structure. Type IV isotherm with H2 loops obtained from N2-sorption studies indicates the ink bottles shape mesoporous network structure. This research proved the successful conversion of plant waste into high grade activated carbon.

scholarly journals Melt Infiltration Processing of Foams Using Glass-Forming Alloys

2002 ◽  
Vol 754 ◽  
Author(s):  
C. San Marchi ◽  
A. Brothers ◽  
D. C. Dunand
Keyword(s):  
Thermal Conductivity ◽  
Metallic Glass ◽  
Relative Density ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Glass Forming ◽  
Melt Infiltration ◽  
First Time ◽  
Infiltration Techniques

ABSTRACTProcessing of foams from bulk metallic glass (BMG) alloys, using melt infiltration techniques, is reported for the first time. Foaming methods based on infiltration of two types of pattern materials are described: investment of a continuous refractory yielding very low relative density structures (5% dense relative to the BMG), and investment of a discontinuous refractory pellet bed yielding higher relative density (50–60% dense relative to the BMG). Both methods are capable of producing foam structures; however high surface area and diminished thermal conductivity, especially in lower density structures, make vitrification of the alloy difficult.

Facile, Single-Step Preparation of Versatile, High-Surface-Area, Hierarchically Structured Hybrid Materials

2011 ◽  
Vol 123 (20) ◽  
pp. 4688-4692 ◽  
Author(s):  
Ivo Nischang ◽  
Oliver Brüggemann ◽  
Ian Teasdale
Keyword(s):  
Surface Area ◽  
Hybrid Materials ◽  
High Surface ◽  
High Surface Area ◽  
Single Step

THERMAL PROCESSING OF BUNDLED TUNGSTEN OXIDE NANOWIRES

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1541-1547 ◽  
Author(s):  
SHIBIN SUN ◽  
YIMIN ZHAO ◽  
YONGDE XIA ◽  
ZENGDA ZOU ◽  
GUANGHUI MIN ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Wide Band ◽  
Temperature Limit ◽  
Wide Band Gap ◽  
Significant Drop ◽  
Oxide Nanowires ◽  
First Time

Taking the wide band gap one-dimensional (1-D) tungsten oxide nanowires as an example, we here demonstrate systematically the physical characteristics of thermally processed nanowires at temperatures ranging from 400°C to 1000°C, for the first time. Accompanied by a significant drop of specific surface area from 151 m2/g for the as-prepared nanowires to 109 m2/g and 66 m2/g subject to annealing at 400°C and 450°C, dramatically morphology evolution and phase transformation have also been observed. The nanostructured bundles became straighter, larger in diameters and shorter in length, and eventually became irregular particles with size up to 5 µm. The Brunauer-Emmett-Tettler (BET) result suggests that 400°C can be considered as a top temperature limit in nanodevice design where high surface area is important, e.g. in gas sensors. A protocol for thermally processing of these bundled tungsten nanowires has been established.

A facile template-free route to synthesize porous ZnO nanosheets with high surface area

2013 ◽  
Vol 580 ◽  
pp. 373-376 ◽  
Author(s):  
Xiulan Hu ◽  
Xiaodong Shen ◽  
Rong Huang ◽  
Yoshitake Masuda ◽  
Tatsuki Ohji ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Zno Nanosheets ◽  
Template Free
Sign in / Sign up

Export Citation Format

Share Document