scholarly journals Pickering-emulsion-templated synthesis of 3D hollow graphene as an efficient oil absorbent

RSC Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 3963-3971
Author(s):  
Nurul Aqilah Pohan ◽  
Mohd Haniff Wahid ◽  
Zulkarnain Zainal ◽  
Nor Azowa Ibrahim

The preparation of graphene in three-dimensional mode represents an alternative method to maintain its characteristically large surface area, which, under normal circumstances, is diminished by the restacking of the individual sheets.

Nanoscale ◽  
2017 ◽  
Vol 9 (46) ◽  
pp. 18311-18317 ◽  
Author(s):  
Yuan Gao ◽  
Yuanjing Lin ◽  
Zehua Peng ◽  
Qingfeng Zhou ◽  
Zhiyong Fan

Three-dimensional interconnected nanoporous structure (3-D INPOS) possesses high aspect ratio, large surface area, as well as good structural stability. Profiting from its unique interconnected architecture, the 3-D INPOS pseudocapacitor achieves a largely enhanced capacitance and rate capability.


RSC Advances ◽  
2021 ◽  
Vol 11 (49) ◽  
pp. 30925-30925
Author(s):  
Nurul Aqilah Pohan ◽  
Mohd Haniff Wahid ◽  
Zulkarnain Zainal ◽  
Nor Azowa Ibrahim

Correction for ‘Pickering-emulsion-templated synthesis of 3D hollow graphene as an efficient oil absorbent’ by Nurul Aqilah Pohan et al., RSC Adv., 2021, 11, 3963–3971. DOI: 10.1039/D0RA09265G.


RSC Advances ◽  
2014 ◽  
Vol 4 (71) ◽  
pp. 37914-37920 ◽  
Author(s):  
Imran Aslam ◽  
Chuanbao Cao ◽  
Waheed S. Khan ◽  
M. Tanveer ◽  
M. Abid ◽  
...  

First time synthesized novel WO3 octahedra exhibited photocatalytic performance of about 5.33 times than that of bulk which may be attributed to large surface area and highly reactive facet {120}.


2015 ◽  
Vol 93 ◽  
pp. 138-143 ◽  
Author(s):  
Yizao Wan ◽  
Ping Liu ◽  
Zhiwei Yang ◽  
Sudha R. Raman ◽  
Guangyao Xiong ◽  
...  

2021 ◽  
Vol 12 ◽  
Author(s):  
Yaming Liu ◽  
Djorde Antonijević ◽  
Ruining Li ◽  
Yuxuan Fan ◽  
Ksenija Dukić ◽  
...  

The aim of the present paper is to determine the sex of the individual using three-dimensional geometric and inertial analyses of metatarsal bones. Metatarsals of 60 adult Chinese subjects of both sexes were scanned using Aquilion One 320 Slice CT Scanner. The three-dimensional models of the metatarsals were reconstructed, and thereafter, a novel software using the center of mass set as the origin and the three principal axes of inertia was employed for model alignment. Eight geometric and inertial variables were assessed: the bone length, bone width, bone height, surface-area-to-volume ratio, bone density, and principal moments of inertia around the x, y, and z axes. Furthermore, the discriminant functions were established using stepwise discriminant function analysis. A cross-validation procedure was performed to evaluate the discriminant accuracy of functions. The results indicated that inertial variables exhibit significant sexual dimorphism, especially principal moments of inertia around the z axis. The highest dimorphic values were found in the surface-area-to-volume ratio, principal moments of inertia around the z axis, and bone height. The accuracy rate of the discriminant functions for sex determination ranged from 88.3% to 98.3% (88.3%–98.3% cross-validated). The highest accuracy of function was established based on the third metatarsal bone. This study showed for the first time that the principal moment of inertia of the human bone may be successfully implemented for sex estimation. In conclusion, the sex of the individual can be accurately estimated using a combination of geometric and inertial variables of the metatarsal bones. The accuracy should be further confirmed in a larger sample size and be tested or independently developed for distinct population/age groups before the functions are widely applied in unidentified skeletons in forensic and bioarcheological contexts.


Author(s):  
Anush Konayakanahalli Chandrappa ◽  
Krishna Prapoorna Biligiri

Several countries have begun using pervious concrete (PC) pavements to reduce the adverse effects of impermeable surfaces resulting from high-impact development. Pore parameters and their relationship to other PC properties are not yet fully understood; however, this information is essential for rational designs of PC pavements. This study investigated the strength, functional, and permeability properties of 18 PC mixtures and used X-ray computed microtomography methods to determine the three-dimensional pore parameters and their relationships, which were thought to affect PC properties. The major findings of this study included the observation that the failure mode in compression was of the shear brittle type, in which the failure plane was inclined at 45° to the ground, and impact abrasion resistance was higher for larger-sized aggregates and was chiefly attributable to the individual aggregate particles debonding. Permeability was more sensitive at low hydrostatic pressure than at higher pressures. The sphericity and compactness of pores had positive correlations with each other, unlike the relationship between surface area and sphericity. The tortuosity calculated for six of the PC mixtures was less than one; this finding was attributed mainly to the single-sized pore structure. Tortuosity increased with an increase in porosity and permeability and decreased with increasing surface area and pore radius. This research should move the current understanding of PC pore structure one step forward and, therefore, will be helpful in modeling PC in a rational manner.


Polymers ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 183
Author(s):  
Waleed A. El-Said ◽  
Jin-Ha Choi ◽  
Dina Hajjar ◽  
Arwa A. Makki ◽  
Jeong-Woo Choi

Recently, more and more attention has been paid to the development of eco-friendly solid sorbents that are cost-effective, noncorrosive, have a high gas capacity, and have low renewable energy for CO2 capture. Here, we claimed the fabrication of a three-dimensional (3D) film of hollow nanocones with a large surface area (949.5 m2/g), a large contact angle of 136.3°, and high surface energy. The synthetic technique is based on an electrochemical polymerization process followed by a novel and simple strategy for pulling off the formed layers as a membrane. Although the polymer-coated substrates were reported previously, the membrane formation has not been reported elsewhere. The detachable capability of the manufactured layer as a membrane braked the previous boundaries and allows the membrane’s uses in a wide range of applications. This 3D hollow nanocones membrane offer advantages over conventional ones in that they combine a π-electron-rich (aromatic ring), hydrophobicity, a large surface area, multiple amino groups, and a large pore volume. These substantial features are vital for CO2 capturing and storage. Furthermore, the hydrophobicity characteristic and application of the formed polymer as a CO2 sucker were investigated. These results demonstrated the potential of the synthesized 3D hollow polymer to be used for CO2 capturing with a gas capacity of about 68 mg/g and regeneration ability without the need for heat up.


Micromachines ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 476 ◽  
Author(s):  
Jun-Uk Lee ◽  
Yong-Won Ma ◽  
Sung-Yeob Jeong ◽  
Bo-Sung Shin

Three-dimensional (3-D) porous graphitic structures have great potential for sensing applications due to their conductive carbon networks and large surface area. In this work, we present a method for facile fabrication of hair-like laser induced graphene (LIG) patterns using a laser scribing system equipped with a 355 nm pulsed laser. The polyimide (PI) film was positioned on a defocused plane and irradiated at a slow scanning speed using a misaligned laser beam. These patterns have the advantages of a large surface area and abundant oxidation groups. We have applied the hair-like LIG patterns to a humidity sensor. The humidity sensor showed good sensitivity characteristics and a large amount of electronic carriers can be stored.


RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70532-70536 ◽  
Author(s):  
Penghui Wang ◽  
Guoqian Lu ◽  
Huan Yan ◽  
Wei Ni ◽  
Min Xu ◽  
...  

A three-dimensional porous graphene electrode is prepared by using cellulose acetate as a template. The electrode possesses ideal porous structure and large surface area, therefore resulting in high electrosorption capacity for CDI application.


2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Yixuan Chen ◽  
Yunzhi Liu ◽  
Parivash Moradifar ◽  
Andrew J. Glaid ◽  
Jennifer L. Russell ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document