B and N isolate-doped graphitic carbon nanosheets from nitrogen-containing ion-exchanged resins for enhanced oxygen reduction
B,N-codoped carbon nanostructures (BNCS) can serve as alternative low-cost metal-free electrocatalysts for oxygen ... boron-nitride (BN) easily formed during the synthesis of BNCS, leading to a unsatisfactory ORR activity. Therefore, it has been ...
Pique the Geek 20120722: More on Carbon
Carbon is sort of unusual in that it is an element that we can see in a fairly pure form in normal life. Most pure elements are either gases (think nitrogen or oxygen ... of us have seen pure copper. So why is graphite so soft? It has to do with its ...
The Geometry of Snowflakes -- Oxygen Structure
Why do freezing water molecules arrange ... The four Elements following Hydrogen, Helium(2), Lithium(3), Beryllium(4), and Boron(5), all have box-like shapes. But the next 5, Carbon(6), Oxygen(8), Nitrogen(9), Fluorine(10) and Neon(11) are all spheres.
Atomic weights of five elements tweaked
lithium, boron, carbon, nitrogen, oxygen, silicon, sulfur, chlorine and thallium. Elements such as fluorine, aluminum, sodium and gold have just one stable isotope and thus do not exhibit variations in their atomic weights. The new intervals may cause some ...
Atomic Weights Tweaked for 5 Elements
In 2010, the IUPAC replaced standard atomic weights with intervals for hydrogen, lithium, boron, carbon, nitrogen, oxygen, silicon, sulfur, chlorine and thallium. Elements like fluorine, aluminum, sodium and gold have just one stable isotope and thus do ...