Platinum Substrates (Pt) | arrandee™
Sold in cases of 50 substrates · minimum order quantity: 1 case (50 pcs)
Chemically inert and electrocatalytically active, it holds up in electrochemistry, EC-STM, and biosensor work where gold or silver would fail.
Product Description
Each arrandee™ Platinum substrate carries a 99.99% pure platinum coating, about 100 nm thick, on borosilicate glass (D263) or fused quartz, with only a very thin adhesion layer where required, or none at all. Standard sizes are 11×11 mm and 12×12 mm; other dimensions and layer thicknesses are available on request. Since the coating sits on a glass carrier, these are also commonly referred to as platinum coated glass substrates or platinum-coated glass slides.
What These Substrates Are Used For
Platinum substrates are used almost exclusively in electrochemistry: as working electrodes for cyclic voltammetry, and for studying electrocatalytic reactions such as oxygen reduction (ORR) and hydrogen evolution (HER) that don't occur on gold surfaces. Because platinum is also chemically stable in acidic electrolytes where gold or silver would corrode, it's a common choice for biosensor work in harsher chemical environments. If another metal might fit your application better, our metal comparison guide compares gold, silver, and platinum side by side.
Technical Specifications
High-purity platinum layers on stable borosilicate glass
Applications & Advantages
Typical Applications
- Pt substrate for electrochemistry: Holds a stable measurement window through repeated cycling.
- Catalysis research: A standard surface for studying oxygen reduction (ORR) and hydrogen evolution.
- Biosensors: Platinized electrodes for biochemical and enzymatic sensing.
Why Platinum from arrandee™?
- Outstanding adhesion: Our deposition process keeps the platinum from delaminating even in acidic media.
- High purity: No organic contamination on the surface.
- Custom-tailored: We can adjust geometry and layer thickness to your lab's setup.
Frequently Asked Questions (FAQ)
Answers about the use and properties of our platinum substrates
Which applications are platinum substrates suited for?
Electrochemical measurements such as cyclic voltammetry are the classic use case. Platinum substrates also work well for studying electrocatalytic processes like hydrogen evolution, and as a stable support for biochemical sensors.
Why should I choose platinum over gold?
Platinum has a different electrochemical potential window than gold and catalyzes specific reactions (such as ORR and HER) that are inactive on gold surfaces. It is also chemically more stable in many acidic electrolytes.
Can custom sizes or alternative thicknesses be supplied?
Yes. Custom dimensions and platinum layer thicknesses on our standard borosilicate glass substrate can be arranged on request; just get in touch with your specific requirements.
What sizes and pricing are available for platinum substrates?
Platinum substrates are available in the standard 11x11 mm and 12x12 mm sizes. As with silver, platinum coatings are produced on demand, so pricing is quoted individually – get in touch for a quote.
Does arrandee™ offer a Pt(111) single-crystal surface?
No – our platinum substrates are a high-purity polycrystalline platinum coating on glass, not an oriented Pt(111) single-crystal surface like our Au(111) gold product. If your work specifically requires an oriented Pt(111) surface, let us know and we can advise whether our standard platinum coating fits or point you toward alternatives.
Research Relevance of Platinum Surfaces
An honest note on the evidence base for this product
Our gold substrates are cited in dozens of peer-reviewed studies. Platinum is newer to our lineup, and we don't yet have a confirmed, published paper that specifically used an arrandee™ platinum substrate. We'd rather say that plainly than attach citations that don't actually apply.
What we can say with confidence: platinum surfaces are widely used in the broader electrochemistry and catalysis literature for oxygen reduction (ORR), hydrogen evolution (HER), and biosensor electrodes, the same applications this substrate is made for. If you publish work using an arrandee™ platinum substrate, let us know and we'll list it here.
