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In a word, without adding any template, the prepared porous carbon material still has good pore structure.
In order to determine the pore structure of the materials, N2 adsorption desorption analysis was performed.
It can be seen from Fig. 2 (b) that the carbon materials of different carbon sources all have pore structure.
This shows that nitrogen atoms doped by in-situ doping method have successfully entered the structure of the carbon materials.
The XPS spectra provides further information about the bonding structures of the components.

Choi et al. fabricated a TiN/AlN/Pt structure.
Fig. 4 Schematic structure and electrical properties and the switching mechanism of the NPT-MoS2 based memristors (a) Schematic structure.
The crystal structure of WS2 is similar to MoS2.
Resistive-switching behavior in Ti/Si3N4/Ti memory structures for ReRAM applications[J].
Journal of Materials Chemistry A, 2018, 6(47): 23932-23977

This method was used to analyse the internal structure to determine the defects present.
The effects of the presence of carburization at the grain boundaries: Brittle structure: Carburization at grain boundaries tend to create a more brittle structure.
This occurs when cracks propagate along grain boundaries, weakening the overall structure.
Chemical composition: The ferrite-pearlite structure is typical of low-carbon steels (about 0.2% - 0.3% C).
Journal of Advances in Chemistry,

The structure and magnetic properties of nanoparticles were controlled by the reaction temperature.
This result is probably attributed to the partial presence of an amorphous-like structure [8].
These peaks confirm the cobalt ferrite structure.
Morrish, Noncollinear magnetic structure of CoFe2O4 small particles, J.
[24] Sašo Gyergyek, Miha Drofenik, Darko Makovec, Oleic acid coated CoFe2O4 nanoparticles synthesized by co-precipitation and hydrothermal synthesis, Materials Chemistry and Physics, 133 (2012) 515-522

The proposed relationship illustrates the significance of the sea salinity on chloride ingress in reinforced concrete structures.
Chisolm, Durability of Reinforced Concrete Structures under Marine Exposure in New Zealand, in BRANZ - Building on Knowledge, 2005
Novokshchenov, Deteriation of reinforced concrete in the marine industrial environment of the Arabian Gulf - A case study, Materials and Structures, 28 (1995) 392-400
Thomas, Corrosion of Reinforcement in Concrete Construction, The Royal Society of Chemistry Publication, (1996) 136-45
Ann, Factors influencing chloride transport in concrete structures exposed to marine environments, Cement and Concrete Composites, Vol. 30 2 (2008) 113-121

The structures were fully optimized until the force on each atom was less than 0.02 eV/ Å.
Based on the optimized structures, the density of states was calculated using 1×1×20 k-points.
The optimized structures for two hydrogen molecules attached to the Pt atom on P, B, N and V CNTs are illustrated in Fig. 3.
The optimized structures are depicted in Fig. 4.
Kubas, Dihydrogen complexes as prototypes for the coordination chemistry of saturated molecules, Proc.

Carbon is one of the primary materials and the elemental of all organic chemistry [1].
Allotropes is the ability of a material to form more than one crystalline structure Chakraborty [3].
However, the structures of graphite are quite coarse.
This suggested there are presence of disorder in the graphitisation structure.
McClure, Energy Band Structure of Graphite, IBM J.

Besides correcting refractive anomalies, by using contact lenses it is possible to change the characteristics of light through the manipulation of material structure properties.
This method allows assessment of the internal structure near the surface of the material.
Atomic Force Microscopy has unprecedented resolution and accuracy, reflected by the fact that the images show the arrangement of individual atoms or molecular structures.
With these advantages AFM has significantly impacted the fields of materials science, chemistry, biology, physics and the specialized field of semiconductors [21].
The microspheres are monitored by an optical microscope to obtain information regarding changes in water structure, with experimental setup shown in Fig. 8.

However, graphite with very loosing layered structure, clear porous, gas easily penetrating the layered structure, damaging the poor combination in the layer, became loose powdery substance and dissolved and even oxidized carbon into CO2 gas[6].
When the work current or unbalanced current when electric current flows to earth through the DC electrode, which does not corrode DC electrode itself, but also extremely has corrosive effect on the underground metal structures surrounding the ground, which mainly causes underground metal structures providing a better conductive properties for conductivity of the current compared to surrounding soil.
Specific methods of mitigating harmful interference of stray currents of CP system are mainly: (a) installing partition member; (b) embedding metal shield close to the interfered structure; (c) installing sacrificial anode at drainage of stray current of disturbed structure; (d) installing distributing system of impressed current at drainage stray current of disturbed structure; (e) installing jumper between interfering and interfered structures [25].
Impressed Current Cathodic Protection Applying Anode Review of Underground Structure [J].
Applied Chemistry, Vol.31 (2002), p.7.

This analysis was conducted using a scanning electron microscope (SEM), which allowed for high-resolution imaging of the zeolite structures.
In the images, the zeolite particles exhibit a distinct crystalline structure characterised by their unique shapes and sizes.
This significant difference suggests that the zeolite's structure favours the adsorption of ammonium ions over the simple release of its compensating ions.
Recent studies indicate that synthetic zeolites exhibit a more stable structure and show less surface degradation during leaching.
Chemistry & Chemical Technology. 12(2) (2018) 143-146