Natural SciencesChemistryMaterials ScienceInorganic ChemistryNanomaterialsNanotechnologyCatalytic MaterialsInorganic NanoparticlesNanomaterial CharacterizationNanomaterials SynthesisNanoparticle SynthesisSurface Functionalization Of NanomaterialsChemical Reduction SynthesisCitrate SaltsGold Nanoparticle SynthesisGold NanostructuresGold Surface FunctionalizationNanostructured Material SynthesisNoble Metal NanostructuresRoom-temperature Synthesis