are re-dispersed in PBS buffer (100 mmol/L, pH 7.4) and 1 mg of MT is then added. The
mixture is stirred overnight (avoid light, 20 8C). The MT decorated CD@SiO2 are washed with DDW until no protein is detected in the eluate. The MT decorated CD@SiO2 are labeled as MT-CD@SiO2 hereafter.