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Chromium green pigments with good color performance were successfully synthesized with tannery sludge as chromium precursor. Yellowish–green problem, which was observed in green pigment synthesized from tannery sludge, was solved by adding Co2O3. Effects of Co2O3 content and calcination temperature on properties of the pigments were characterized by XRD, SEM, EDS and UV–vis. The XRD and EDS results...
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