The virial and Hardy methods provide accurate local stresses for single component materials such as monatomic metals.
The synergetic enhancement of light harvesting and charge separation in this single-component material leads to a high performance toward photocatalytic hydrogen evolution.
Solar light harvesting and charge separation are both critical to the solar-to-energy conversion in photocatalysis, but it is difficult to simultaneously achieve both in a single-component material.
Compared with protein electrodes constructed using a single-component material, including Hb-QDs/GC and Hb-cerasome/GC electrodes, the Hb-QDs-cerasome/GC electrode not only realized enhanced direct electrochemistry, but also displayed higher sensitivity and a wider linear range toward the detection of hydrogen peroxide because of the synergistic effect of the QDs and cerasomes.
The model that has been proved successful in predicting the ability of single-component materials to form single crystals is further extended to two-component materials.
In particular, highly conducting and metallic single-component materials have recently been found uniquely within materials based on metal-bis-1,2-dithiolene complexes.
With this goal, magnetic materials, highly conducting and metallic single-component materials containing dithiolene complex building blocks, multifunctional materials where the dithiolene complex is the magnetic or conducting component in addition to more complex systems involving other types of building block such as the metal oxalate complexes, will be discussed.
Since the dimensions of the individual components are nanoscale level or comparable to the size of the biomolecules, the combination is always expected to proffer novel functions which are not available in single-component materials.
However, hybrid materials such as graphene/cobalt sulfide [34] and RGO/Cu2S [35] have been reported to show improved catalytic activity and conductivity relative to single-component materials which enhanced efficiency in DSSCs.
The rational design of composite photocatalysts could extend the spectral responsive range and promote the separation of photogenerated carriers and thus would improve photocatalytic activity dramatically compared to their host single-component materials [8, 9].
This has been identified for single-component materials and for transition metals on the nanoparticle surface, such as Fe and vanadium, which take part in the formation of active sites (Li 2006).
