scholarly journals Formic acid assisted hydrogenation of levulinic acid to $$\upgamma $$ γ -valerolactone over ordered mesoporous $$\hbox {Cu/Fe}_{2}\hbox {O}_{3}$$ Cu/Fe 2 O 3 catalyst prepared by hard template method

2018 ◽  
Vol 130 (2) ◽  
Author(s):  
Muppala Ashokraju ◽  
Varkolu Mohan ◽  
Kondeboina Murali ◽  
Maddaluri Venkat Rao ◽  
Burri David Raju ◽  
...  
Keyword(s):  
Formic Acid ◽  
Levulinic Acid ◽  
Template Method ◽  
Hard Template ◽  
Ordered Mesoporous ◽  
Hard Template Method

scholarly journals Highly efficient electrocatalysts with CoO/CoFe2O4 composites embedded within N-doped porous carbon materials prepared by hard-template method for oxygen reduction reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (89) ◽  
pp. 56375-56381 ◽  
Author(s):  
Xinxin Jin ◽  
Yu Jiang ◽  
Qi Hu ◽  
Shaohua Zhang ◽  
Qike Jiang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Alkaline Solution ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Low Cost ◽  
Reduction Reaction ◽  
Template Method ◽  
Hard Template ◽  
Hard Template Method

Low-cost dual transition metal (Fe and Co) based non-noble metal electrocatalysts (NNMEs) with large surface area and porous structure boost oxygen reduction reaction (ORR) performance in alkaline solution.

scholarly journals Impregnation Nickel on Mesoporous ZSM-5 Templated Carbons as a Candidate Material for Hydrogen Storage

2017 ◽  
Vol 17 (1) ◽  
pp. 30
Author(s):  
Ratna Ediati ◽  
Amirul Mukminin ◽  
Nurul Widiastuti
Keyword(s):  
Ambient Temperature ◽  
Pore Size ◽  
Adsorption Capacity ◽  
Amorphous Carbon ◽  
Crystallization Temperature ◽  
Template Method ◽  
Hard Template ◽  
Weight Percentage ◽  
Adsorption Desorption ◽  
Hard Template Method

A series of carbon with ZSM-5 mesoporous (ZMC) and Ni/ZMC ZSM-5 templates were synthesized and gravimetrically known its adsorption capacity to H2 gases. ZMC carbon was synthesized using a hard template method at a carbonation temperature of 900 oC with sucrose as a source of carbon. A mesoporous ZSM-5 template was synthesized by using a hydrothermal method at an aging and crystallization temperature of respectively 60oC and 150oC for as long as 24 hours. The characterized result of ZMC carbon using XRD powder has shown a diffracted pattern of amorphous carbon. Impregnating Ni with ZMC carbon each resulted in 5%, 15% and 25% of weight, which in turn also resulted in a diffractogram pattern of Ni/ZMC-5, Ni/ZMC-15, and Ni/ZMC-25, where each patterns were uniform and had no additional peaks. The results of SEM-EDAX showed that Ni had been successfully impregnated on the surface of ZMC carbon with a random morphology surface of ZMC carbon. The isothermal results of adsorption – desorption of N2 showed that the larger the Ni loading on the supporting ZMC carbon, the smaller the surface area of the ZMC specific carbon. The distribution of the pore size that was counted by using the BJH method, which was applied to all the samples, was as big as 3,8 nm. The adsorption capacity of H2 was measured by using the gravimetry method at ambient temperature for Ni/ZMC-5, Ni/ZMC-15, and Ni/ZMC-25, which each gave a weight percentage of 0,331%; 0,663% and 0,649% respectively, whilst the ZMC carbon has a weight of 2,18%.

Synthesis, Characterization of Tin Dioxide Nanowires by Hard Template Method and Their Gas Sensing Properties

2011 ◽  
Vol 9 (1) ◽  
pp. 328-331 ◽  
Author(s):  
Haijiao Zhang ◽  
Zhijin Tan ◽  
Lin Wang ◽  
Zhiyong Li ◽  
Ping Gu ◽  
...  
Keyword(s):  
Tin Dioxide ◽  
Gas Sensing ◽  
Template Method ◽  
Hard Template ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Hard Template Method

Synthesis of silica nanoboxes via a simple hard-template method and their application in controlled release

2010 ◽  
Vol 64 (8) ◽  
pp. 990-992 ◽  
Author(s):  
Mingwei Zhao ◽  
Wenpei Kang ◽  
Liqiang Zheng ◽  
Yanan Gao
Keyword(s):  
Controlled Release ◽  
Template Method ◽  
Hard Template ◽  
Hard Template Method

Synthesis and Characterization of Nanostructured Tungsten Oxide by Hard Template Method

2014 ◽  
Vol 896 ◽  
pp. 78-81
Author(s):  
Teruhisa Hongo ◽  
Yoshihiro Usami ◽  
Atsushi Yamazaki
Keyword(s):  
Mesoporous Silica ◽  
Specific Surface ◽  
Tungsten Oxide ◽  
Surface Area ◽  
Synthesis And Characterization ◽  
Template Method ◽  
Nanorod Arrays ◽  
Hard Template ◽  
Hard Template Method

Nanostructured WO3 was synthesized by a hard template method using platelet-shaped mesoporous silica SBA-15. The nanostructured WO3 consisted of nanorod arrays comprised of mixed crystalline tetragonal and monoclinic phases with the diameter of 8.5 nm and the length of 170-300 nm. The specific surface area was 30 m2/g, which was about 6 times higher compared to that synthesized without the template.

scholarly journals g-C3N4: Properties, Pore Modifications, and Photocatalytic Applications

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 121
Author(s):  
Jiaqi Dong ◽  
Yue Zhang ◽  
Muhammad Irfan Hussain ◽  
Wenjie Zhou ◽  
Yingzhi Chen ◽  
...  
Keyword(s):  
Pore Structure ◽  
Active Sites ◽  
Soft Template ◽  
Template Method ◽  
Hard Template ◽  
Advantages And Disadvantages ◽  
Template Free ◽  
The Impact ◽  
Photocatalytic Applications ◽  
Hard Template Method

Graphitic carbon nitride (g-C3N4), as a polymeric semiconductor, is promising for ecological and economical photocatalytic applications because of its suitable electronic structures, together with the low cost, facile preparation, and metal-free feature. By modifying porous g-C3N4, its photoelectric behaviors could be facilitated with transport channels for photogenerated carriers, reactive substances, and abundant active sites for redox reactions, thus further improving photocatalytic performance. There are three types of methods to modify the pore structure of g-C3N4: hard-template method, soft-template method, and template-free method. Among them, the hard-template method may produce uniform and tunable pores, but requires toxic and environmentally hazardous chemicals to remove the template. In comparison, the soft templates could be removed at high temperatures during the preparation process without any additional steps. However, the soft-template method cannot strictly control the size and morphology of the pores, so prepared samples are not as orderly as the hard-template method. The template-free method does not involve any template, and the pore structure can be formed by designing precursors and exfoliation from bulk g-C3N4 (BCN). Without template support, there was no significant improvement in specific surface area (SSA). In this review, we first demonstrate the impact of pore structure on photoelectric performance. We then discuss pore modification methods, emphasizing comparison of their advantages and disadvantages. Each method’s changing trend and development direction is also summarized in combination with the commonly used functional modification methods. Furthermore, we introduce the application prospects of porous g-C3N4 in the subsequent studies. Overall, porous g-C3N4 as an excellent photocatalyst has a huge development space in photocatalysis in the future.

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