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. 2020 Feb 10;6(2):e03358. doi: 10.1016/j.heliyon.2020.e03358

Figure 1.

Figure 1

XRD spectra comparison between precipitate product compared to the pure elemental sulfur (S8). Note: Concentration of total manganese was 0.1 M, total gluconate was 1.2 M at pH of 13.