Shared posts

30 Aug 06:08

Super-Resolved Nuclear Magnetic Resonance Spectroscopy

by Satish Mulleti

Super-Resolved Nuclear Magnetic Resonance Spectroscopy

Scientific Reports, Published online: 29 August 2017; doi:10.1038/s41598-017-09884-w

05 Mar 13:58

Division of Catalysis and Porous Materials, Portuguese Chemical Society

by Helder T. Gomes
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“The Division of Catalysis and Porous Materials (DCMP) of the Portuguese Chemical Society (SPQ) is focused on the scientific advances in catalysis and porous materials, and their applications.” This and more about the Division of Catalysis and Porous Materials (DCMP) of the Portuguese Chemical Society (SPQ) can be found in this issue's Society Profile.

03 Mar 01:00

Nanostructured Silica–Titania Hybrid using Dendritic Fibrous Nanosilica as a Photocatalyst

by Nisha Bayal, Rustam Singh, Vivek Polshettiwar

Abstract

A new method has been developed to fabricate active TiO2 photocatalysts by tuning the morphology of the catalyst support. A sustainable solution-phase TiO2 deposition on dendritic fibrous nanosilica (DFNS) protocol is developed, which is better than the complex and expensive atomic layer deposition technique. In general, catalytic activity decreases with an increased TiO2 loading on conventional mesoporous silica because of the loss of the surface area caused by the blocking of pores. Notably, in the case of the dendritic fibrous nanosilica KCC-1 as a support, because of its open fibrous morphology, even at the highest TiO2 loading, a relatively large amount of surface area remained intact. This improved the accessibility of active sites, which increased the catalytic performance of the KCC-1/TiO2 photocatalyst. KCC-1-supported TiO2 is a superior photocatalyst in terms of H2 generation (26.4 mmol ginline image −1 h−1) under UV light. This study may provide a new direction for photocatalyst development through the morphology control of the support.

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Fibrous photocatalyst: A new method is developed to fabricate active TiO2 photocatalysts by tuning the morphology of the catalyst support through solution-phase TiO2 deposition on silica. With the nanosilica KCC-1 as a support, a relatively large amount of surface area remains intact because of its open fibrous morphology, even at the highest TiO2 loading. This improves the accessibility of active sites, which increases the catalytic performance of the KCC-1/TiO2 photocatalyst.

15 Oct 09:16

Ultrasensitive, Biocompatible, Self-Calibrating, Multiparametric Temperature Sensors

by Haiguang Zhao, Alberto Vomiero, Federico Rosei
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Core–shell quantum dots serve as self-calibrating, ultrasensitive, multiparametric, near-infrared, and biocompatible temperature sensors. They allow temperature measurement with nanometer accuracy in the range 150–373 K, the broadest ever recorded for a nanothermometer, with sensitivities among the highest ever reported, which makes them essentially unique in the panorama of biocompatible nanothermometers with potential for in vivo biological thermal imaging and/or thermoablative therapy.