Results 131 to 140 of about 51,026 (325)

Recent Advances in Porphyrin‐Based Magnetic Nanocomposites: Preparation, Characterization, and Catalytic Application in the Epoxidation of Olefins

Nano Select, EarlyView.
This article reviews the recent advances in the strategies of preparation, characterizations, catalytic efficiency, and plausible mechanisms of metalloporphyrin‐based magnetic nanocatalysts focused on the oxidation of olefins during 2013–2024. ABSTRACT Catalytic oxidation of olefins is a vital class of reaction that has drawn huge interest in both ...
Sara Payamifar, Amin Foroozandeh, Fatemeh Nejabat, Majid Abdouss, Saeed Rayati, Rasoul Esmaeely Neisiany   +5 more
wiley   +1 more source

Spectrophotometry of comets [PDF]

Photoelectric spectrophotometric- and image tube equipped spectrographic-studies on comets are used to formulate a new model for the cometary nucleus that is physically similar to the icy-conglomerate.
Odell, C. R.
core   +1 more source

A Comprehensive Study of Quantum Dots: Ranging From Synthesis to Applications in Electrochemical Biosensors in the Detection of Biomolecules, Gastrointestinal Diseases, and Electrophysiology

Nano Select, EarlyView.
Quantum dots (QDs) typically refer to extremely small semiconductor particles, often no larger than 10 nm. The development of efficient biosensors for the sensitive and selective detection of biomolecules is essential for fundamental research in analytical chemistry, biomedicine, clinical diagnosis, and electrophysiology.
Parisa Navid, Hamid Reza Akbari‐Hasanjani, Reza Akbari‐Hasanjani   +2 more
wiley   +1 more source

Synthesis and Characterization of MnO2 nanoparticles mediated by Raphia hookeri seed

Journal of Nigerian Society of Physical Sciences
In this study, managanese dioxide nanoparticles (MnO2-NP) was synthesized. Raphia hookeri seed was used as a bioreductant for the synthesis of MnO2-NPs. The biosynthesized MnO2-NPs was investigated for their reaction, structure and morphology.
Bamidele H. Akpeji, Bulouebibo Lari, Ufuoma A. Igbuku, Godswill Tesi, Elias E. Elemike, Paul O. Akusu   +5 more
doaj   +1 more source

High‐Performance Oxidation and Nanomolar Detection of Phenylhydrazine Using a 6‐Hydroxyflavone‐Based Molecular Electrocatalyst Functionalized Multiwalled Carbon Nanotube in Batch Injection Analysis

ChemistryOpen, EarlyView.
This study presents a novel, rapid method for in situ functionalization of carbon electrodes using redox‐active form of the 6‐hydroxyflavone. The resulting multiwalled carbon nanotubes with redox‐active HFLA (MWCNT@HFLA‐Redox) electrode enables sensitive, selective detection of toxic phenylhydrazine, with excellent performance (limit of detection: 7 nM)
Valisireddy Lavanya, Kannappan Santhakumar, Annamalai Senthil Kumar   +2 more
wiley   +1 more source

Quantitative Determination of Steroid Preparations by Infrared Spectrophotometry

, 1957
Akira Ito, Osamu Amakasu
openalex   +2 more sources

Infrared photometry and spectrophotometry of Titan [PDF]

The wide variation in infrared brightness temperature of Titan is explained in terms of a greenhouse effect. Radiometric observations in the infrared and microwave frequencies indicate an alternate hot atmospheric model. Methane, ammonia, hydrogen atoms,
Morrison, D.
core   +1 more source

Low Resistivity Sputter Deposited SnOx Thin Films: An Indium‐Free Transparent Conductive Oxide?

physica status solidi (RRL) – Rapid Research Letters, EarlyView.
For sustainable, mass‐producible optoelectronic devices, indium‐free transparent conductive oxides are essential. This study examines how oxygen content during sputter deposition and thermal treatments influences the optoelectrical properties of amorphous SnOx films.
Marlene Härtel, Angelika Harter, Darja Erfurt, Reiner Klenk, Alexander Steigert, Lars Korte, Rutger Schlatmann, Bernd Stannowski   +7 more
wiley   +1 more source

Hydrophobic Radiative Cooling using Zein‐Functionalized Polyvinyl Alcohol Nanofibers with Dielectric Nanoparticles

Small, EarlyView.
A high‐performance radiative cooling material is fabricated from hydrophilic polyvinyl alcohol using a green, scalable method. The resulting nanofiber membrane exhibits robust hydrophobicity alongside high solar reflectance (91.7%) and thermal emissivity (96.9%). This combination enables a 6.9 °C sub‐ambient temperature drop, making it ideal for energy‐
Minseo Jeong, Seokgyu Kwon, Changhwan Hyeon, Juhoon Baek, Myeongsu Seong, Minkyung Kim, Dasol Lee   +6 more
wiley   +1 more source

Characterization of Tocopherols in Vegetable Oils by Infrared Spectrophotometry [PDF]

, 1962
Walter W Morris, Edward O Haenni
openalex   +1 more source