"Space—the final frontier." This preamble to a well-known television series captures the challenge encountered not only in space travel adventures, but also in the field of porous materials, which aims to control the size, shape and uniformity of the porous space and the atoms and molecules that define it. The past decade has seen significant advances in the ability to fabricate new porous solids with ordered structures from a wide range of different materials. This has resulted in materials with unusual properties and broadened their application range beyond the traditional use as catalysts and adsorbents. In fact, porous materials now seem set to contribute to developments in areas ranging from microelectronics to medical diagnosis.

Ordered porous materials for emerging applications

Photoinduced reactivity of titanium dioxide

UV-Visible ار راد ن .د TiO2 ( تیفرظ راون مان هب نورتکلا یاراد یژرنا زارت لماش VB و ) رگید زارت ی یژرنا اب ( ییاناسر راون مان هب نورتکلا زا یلاخ و رتلااب VB یم ) .دشاب ت ود نیا نیب یژرنا توافت یژرنا فاکش زار ، پگ دناب هدیمان یم .دوش هک ینامز زا نورتکلا لاقتنا VB هب VB یم ماجنا دریگ ، TiO2 اب ودح یژرنا بذج د ev 2 / 3 ، نورتکلا تفج کی دیلوت یم هرفح .دیامن و نورتکلا هرفح ی نا اب هدش دیلوت یم کرتشم حطس هب لاقت ثعاب دناوت شنکاو ماجنا اه یی ددرگ . TiO2 دربراک ،دراد یدایز یاه هلمج زا یم ناوت اوه یگدولآ هیفصت یارب (CO2) و بآ و ... نآ زا هدافتسا درک .

Advanced Nanoarchitectures for Solar Photocatalytic Applications

In this review, the progress made in the last ten years concerning the synthesis of porous carbon materials is summarized. Porous carbon materials with various pore sizes and pore structures have been synthesized using several different routes. Microporous activated carbons have been synthesized through the activation process. Ordered microporous carbon materials have been synthesized using zeolites as templates. Mesoporous carbons with a disordered pore structure have been synthesized using various methods, including catalytic activation using metal species, carbonization of polymer/polymer blends, carbonization of organic aerogels, and template synthesis using silica nanoparticles. Ordered mesoporous carbons with various pore structures have been synthesized using mesoporous silica materials such as MCM-48, HMS, SBA-15, MCF, and MSU-X as templates. Ordered mesoporous carbons with graphitic pore walls have been synthesized using soft-carbon sources that can be converted to highly ordered graphite at high temperature. Hierarchically ordered mesoporous carbon materials have been synthesized using various designed silica templates. Some of these mesoporous carbon materials have successfully been used as adsorbents for bulky pollutants, as electrodes for supercapacitors and fuel cells, and as hosts for enzyme immobilization. Ordered macroporous carbon materials have been synthesized using colloidal crystals as templates. One-dimensional carbon nanostructured materials have been fabricated using anodic aluminum oxide (AAO) as a template.

Recent Progress in the Synthesis of Porous Carbon Materials

http://fcbt.mse.gatech.edu/PDF/Bersra2007.pdf

A review on fundamentals and applications of electrophoretic deposition (EPD)

Dehydrogenation of ethane to ethylene in the presence or absence of CO2 over Au catalysts supported on nanorod and nanoparticle ceria was investigated. The nanorod CeO2 supported Au exhibits higher activity as well as higher stability, with an ethane conversion of 17% and ethylene selectivity of 98% without any observable trend of deactivation in 6 h. The surface oxygen reducibility of the catalysts plays an important role in the dehydrogenation which can be greatly enhanced by the addition of Au. The promoting effect of CO2 on stability is caused by reducing coke by the Boudouard reaction and supplementing the reducible oxygen specie of CeO2 surface sustainably.

Oxidative Dehydrogenation of Ethane with CO 2 over Au/CeO 2 Nanorod Catalysts

Three hydroxyapatite (HAP) supported rhodium catalysts (i.e., Rh/HAP-PEG-200, Rh/HAP-EDTA-200, and Rh/HAP-EDTA-100) were prepared by loading Rh(NO 3 ) 3 onto HAP supports prepared hydrothermally at 200 or 100 °C in the presence of PEG or EDTA additive, followed by calcination at 500 °C. For comparison, an additional Rh/HAP-normal catalyst was prepared using a conventional HAP support prepared by precipitation. Different preparation methods/conditions were found to influence the physicochemical properties (e.g., micro-morphology, basicity, concentration of surface hydroxyls, oxygen-desorption property) of HAP supports and/or Rh/HAP catalysts. The activities of these catalysts in N 2 O decomposition follow the sequence of Rh/HAP-PEG-200 > Rh/HAP-EDTA-200 ≈ Rh/HAP-normal > Rh/EDTA-100. The correlation among preparation methods/conditions, physicochemical properties, and catalytic performance of Rh/HAP catalysts was investigated in detail.

Correlation among preparation methods/conditions, physicochemical properties, and catalytic performance of Rh/hydroxyapatite catalysts in N2O decomposition

Poly(styrene sulfonic acid)–grafted carbon nanotube as a stable protonic acid catalyst

A series of vanadia catalysts supported on SBA-15 (V/SBA) with a vanadia (V) content ranging from 1% to 11% were prepared by an incipient wetness method Their catalytic behavior in the dehydrogenation of isobutane to isobutene with CO2 was examined The catalysts were characterized by N2 adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and temperature-programmed reduction (TPR) It was found that these catalysts were effective for the dehydrogenation reaction, and the catalytic activity is correlated with the amount of dispersed vanadium species on the SBA-15 support The 7% V/SBA catalyst shows the highest activity, which gives 408% isobutane conversion and 848% isobutene selectivity The SBA-15-supported vanadia exhibits higher isobutane conversion and isobutene selectivity than the MCM-41-supported one

https://www.mdpi.com/2073-4344/6/11/171/pdf

Zi Gao

Papers

Oxidative Dehydrogenation of Ethane with CO 2 over Au/CeO 2 Nanorod Catalysts

Correlation among preparation methods/conditions, physicochemical properties, and catalytic performance of Rh/hydroxyapatite catalysts in N2O decomposition

Poly(styrene sulfonic acid)–grafted carbon nanotube as a stable protonic acid catalyst

Dehydrogenation of Isobutane with Carbon Dioxide over SBA-15-Supported Vanadium Oxide Catalysts

Sc2O3-promoted composite of In2O3 and Beta zeolite for direct conversion of bio-ethanol to propylene