Fig. 1From: A Facile pH Controlled Citrate-Based Reduction Method for Gold Nanoparticle Synthesis at Room TemperatureNormalized UV-vis spectra of gold nanoparticles synthesized via room temperature approach (RT) showing long-term stability of colloidal suspension (concentration ratio of citrate and gold(III) chloride is 5:1 at pH = 5)Back to article page