Shaped-controlled electrosynthesis of gold nanodendrites for highly selective and sensitive SERS detection of formaldehyde

- Au dendrites were prepared by one-step electrodeposition in the presence of l-asparagine.
- This method was simple, feasible, and controllable, without any seed, surfactant, or template.
- Au dendrites were used as highly Raman-active substrates.
- AHMT was used as a probe for highly selective and sensitive SERS detection of formaldehyde.