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The cumulative shell thickness distribution for SiO2 coating weight fraction, WF, of 5 (solid line), 10 (dash-dot line), 20 (dashed line) and 30 wt% (dotted line) for Q = 15.8 l/min. Increasing WF leads to larger coating particles and subsequently to broader shell thickness distributions in the product core-shell TiO2-SiO2 particles.
