Fig 1.
Distributions of the publication years in photocatalytic research.
The black line represents the number of published studies, and the purple line represents the number of WoS subject categories.
Table 1.
The publications of WoS subject categories (Top 10).
Fig 2.
The number of papers published of the disciplines of Chemistry, Materials and Physics (Top 3 of first level discipline).
Fig 3.
The disciplinary interactive network in the period of 1999–2020.
Fig 4.
The disciplinary interactive network in 1999 (a), 2010 (b) and 2020 (c).
Table 2.
The structure characteristics of disciplinary interaction networks.
Table 3.
The centrality of the main discipline in the period of 1999–2020.
Table 4.
The centrality of the main discipline in 1999 and 2020.
Table 5.
The block clustering of the disciplines in 1999.
Table 6.
The block clustering of the disciplines in 2020.
Fig 5.
Schematic visualization of cluster modeling for 1999 (a) and 2020 (b).