## 3 Results and Discussion
It should also be noted that there is an decrease in the intensity of the cellulose diffraction peaks when subjected to heat treatments (probably associated with crystallinity of the cellulose) [53]; even so, the diffraction peaks of MoS\({}_{2}\) stand out in the diffractogram for high synthesis times, due to the greater amount of nanomaterial grown on the paper surface, for (100), (105) and (110) planes, or the possible increase of the intercalation with the synthesis times, for the 9.4\({}^{\circ}\) and 18.6\({}^{\circ}\) peaks. It can be noted that there is a continuous increase in peak intensity at 9.2\({}^{\circ}\) up to 30 min, in samples synthesized at 220 \({}^{\circ}\)C. Then the intensity of the entire diffractogram, including those peaks related to cellulose paper, starts to decrease for higher times. The high temperature leads to degrading the paper structure and can affecting the growth process for longer synthesis times, leading to less production of nanostructures on the substrate surface. This result is in line with what is reported in the literature, which leads to cellulose degradation processes starting above 200 \({}^{\circ}\)C [53]. In summary, the growth process of the MoS\({}_{2}\) on paper substrate seems to be better at 200 \({}^{\circ}\)C.  
For a complementary analysis of the presence of 1T and 2H-MoS\({}_{2}\) phases, Raman spectroscopy measurements were performed, looking for the presence of characteristic peaks of these phases on the samples. After confirming the presence of both phases in the synthesized samples by Raman spectroscopy, an analysis of the spatial distribution of 1T and 2H-MoS\({}_{2}\) was performed by the micro-Raman technique. By mapping an area of 225 \(\upmu\)m [2] and using steps of 1 \(\upmu\)m, the regions of the spectra between 146 to 148 cm  
Figure 3: X-ray diffraction patterns of MoS\({}_{2}\) nanosheets growth on cellulose paper substrate at different synthesis temperatures and times and the JCPDS 37-1492 card pattern of 2H-MoS\({}_{2}\). The peaks identified by circles are related to the cellulose paper. The # symbol is used to identify the peaks at 9.3\({}^{\circ}\) and 18.6\({}^{\circ}\). (referring to the main vibrational mode of the 1T phase), and between 378 to 385 cm\({}^{-1}\) (referring to the E\({}^{1}\)\({}_{\text{2g}}\) vibrational mode of the 2H phase) [12; 46], were highlighted. The Raman spectrum and the micro-Raman mapping of the samples synthesized at 220 \({}^{\circ}\)C, for times of 05 and 120 min, are shown in Figure 4.  
As can be seen in Figure 4a,b, it was possible to identify characteristic Raman peaks of the 1T (vibrational modes J\({}_{1}\), J\({}_{2}\) and J\({}_{3}\)) and 2H (vibrational modes E\({}^{1}\)\({}_{\text{2g}}\) and A\({}_{\text{1g}}\)) phases in the sample spectrum [46], thus confirming the presence of both phases in the synthesized nanostructure. Figure 4c_d_ shows the micro-Raman mapping, confirming the presence of both phases, the 1T (blue) and the 2H (green), in both samples and in the same space region. These phases are not occupying well-defined regions, but they are dispersed throughout the mapping area. This behavior is observed for all samples (regardless synthesis time and temperature), as shown in Figure 4 and Figure S2 of the supplementary information. The dispersion of the metallic and semiconductor phases of MoS\({}_{2}\) in the samples may be associated with the continuous production of the metallic phase during synthesis. Over time, the 1T phase is converted to a 2H phase, due to the low stability of the metallic phase and presence of microwave radiation during the synthesis process [12]. Thus, the 1T and 2H phases are present in the samples, as can be seen in the diffractogram of the sample synthesized at 200 \({}^{\circ}\)C for 120 min. The greater dispersion of phases on the surface of the substrate can be good for certain applications, since it increases the metal/semiconductor interface (1T/2H) which leads to greater carrier mobility due to the presence of the 1T phase.