Which company supplies the Pd/MWCNT catalyst used in the AZ31 and AZ61 magnesium hydrogen storage papers?

Top Nano Technology Co., Ltd. of New Taipei City, Taiwan. Both 2026 Elsevier papers name it in the Materials section, and Wen-Lie Chang of Top Nano Technology is a co-author of both. ZnoNova is the commercialisation company for this programme and is the only route to buy the material; the R&D partner does not handle commercial enquiries. Per-batch certificates of analysis are supplied.

Where can I buy the Pd/MWCNT catalyst commercially?

Through ZnoNova. Evaluation quantities ship in 1 kg bags with a per-batch certificate of analysis; you do not need to commit to production volume. Current stated output is around 5 kg per month, so tell us early if your programme needs materially more.

What is the specification of the Pd/MWCNT material?

5 wt% palladium on 95 wt% multi-walled carbon nanotubes. Pd purity above 97%, Pd BET 45 m2/g, Pd particle size 5-15 nm. MWCNT purity above 90%, BET 250-300 m2/g, dimensions 9.5 nm by 1.5 um. The AZ31 paper independently reports the same 9.5 nm diameter and 250-300 m2/g surface area.

Do you sell the finished magnesium hydrogen storage system?

No. We supply the catalyst. The alloy processing described in the papers, equal-channel angular pressing and high-energy ball milling, is the customer's side of the work or a joint development.

ZnoNova › Materials › Buying Top Nano materials

Commercial supply

Buying the Catalyst Named in the Papers

ZnoNova Materials·Top Nano Technology Co., Ltd.

Researchers keep finding this company the same way: they read a Materials section, see “acquired from Top Nano Technology Co., Ltd.”, and then cannot find anywhere to actually buy it. That manufacturer does not run an international sales operation of its own. ZnoNova is the sole international channel for these materials — quotations, samples, documentation and shipping all run through us. This page exists so the trail does not go cold.

The short answer

ZnoNova (Guangzhou ZnoNova Technology Development Co., Ltd.) is the commercialisation company for this materials programme. Top Nano Technology Co., Ltd. is our research and development partner in Taiwan; it does not handle commercial enquiries. We quote, sample, document and ship these materials, in English, with per-batch certificates of analysis.

If you are here because of a paper, the two most commonly cited materials are the Pd/MWCNT composite powder and the nano-platinum powder. Both are commercially available. Specifications are below, and the request form at the bottom reaches a person, not a queue.

The papers that bring people here

Two Elsevier papers published in 2026, both co-authored by Wen-Lie Chang of Top Nano Technology:

Huang S-J. et al., Fuel 425 (2026) 139436 — DOI 10.1016/j.fuel.2026.139436 (AZ61 magnesium alloy)
Huang S-J. et al., Journal of Energy Storage 179 (2026) 123907 — DOI 10.1016/j.est.2026.123907 (AZ31 magnesium alloy)

The AZ31 paper states the material's specification directly, which is useful because it is an independent measurement rather than a supplier claim:

The pristine MWCNTs were acquired from Top Nano Technology Co. Ltd. and demonstrated an average tube diameter of roughly 9.5 nm coupled with a high Brunauer–Emmett–Teller surface area of 250–300 m²/g. … This hybrid additive, supplied by the same manufacturer, consisted of 5 wt% palladium nanoparticles supported on 95 wt% MWCNTs.

Those figures match the manufacturer's datasheet. Full citations and measured results are here.

What you can order

Pd/MWCNT (5/95) composite powder TP-120803	Pd purity >97% · Pd BET 45 m²/g · Pd particle size 5–15 nm · density 12.02 g/cm³ · resistivity 9.96 µΩ·cm at 20 °C MWCNT purity >90% · BET 250–300 m²/g · 9.5 nm × 1.5 µm · moisture <0.3% · RoHS Recommended dosage 5% · 1 kg / bag
Nano platinum powder SP-B00101	Purity 97% specified, 99.2% by ICP · density 21.45 g/cm³ · spherical Primary particle size 5–20 nm · secondary <200 nm · BET 35 m²/g Resistivity 10.6 µΩ·cm at 20 °C · moisture <0.3% · RoHS · 10 g or 100 g / bottle Cathode side (HER). It does not replace the iridium anode catalyst.
Nano ruthenium dioxide dihydrate SP-R00102	RuO₂·2H₂O = 99.5% by ICP · anode side (OER), DSA electrodes, pseudocapacitors
Pd/CeO₂/C and Pd/RuO₂/C supported catalysts —	Evaluation samples available. Full datasheets are being prepared with the manufacturer.

Why buy through ZnoNova rather than trying to go around us

It is a fair question and we would rather answer it than pretend nobody asks. ZnoNova is the sole international sales channel for these materials. Quotations, samples, documentation, export paperwork and after-sale support all run through us — the plant does not operate an international sales desk, and a purchase order sent to a factory that has none does not become a shipment.

Everything in English, in your timezoneSpecifications, CoA, MSDS, invoices and correspondence. No translation round-trips on a technical question you need answered today.

Export documentation that clears customsCommercial invoice, packing list, HS classification, dangerous-goods declaration where applicable. A precious-metal powder shipment stopped at a border costs more than the powder.

Per-batch CoA in the form your QA acceptsIssued against the lot you actually receive, not a generic specimen sheet.

Samples without a production commitment10 g of nano platinum or 1 kg of Pd/MWCNT, priced and shipped as a sample, because evaluation should not require a purchase decision.

One accountable contactIf a batch is late, off-spec or lost in transit, you have one company to hold responsible — and it is a company you can reach in your own working hours.

Continuity of supplyWe hold the commercial relationship, monitor lots and flag changes. That is the part that matters once a material is designed into your process.

To be explicit: we publish the manufacturer's name because it appears in the papers and because hiding it would make our evidence unverifiable. We do not publish the plant's contact details, and the plant does not sell internationally. If you want this material outside Taiwan, ZnoNova is the route. That is not a gatekeeping arrangement; it is what the supply chain actually is.

Ordering, honestly

Evaluation quantities are the normal starting point. Pd/MWCNT ships in 1 kg bags; nano platinum in 10 g or 100 g bottles. You do not need to commit to production volume to get material.
Per-batch certificate of analysis is supplied with the material. Ask and we send it.
Current stated output for the Pd/MWCNT powder is around 5 kg per month. If your programme needs materially more than that, tell us early — we are confirming expansion lead time with the plant rather than guessing at it here.
We cannot yet publish a kilogram price ladder. Palladium and platinum pricing moves, and we are waiting on the manufacturer's current tiers. Ask and we will quote against the day's basis rather than post a number that goes stale.
The alloy processing is not ours. The papers use equal-channel angular pressing and high-energy ball milling on the magnesium. We supply the catalyst; the processing is your side, or a joint development.

What we will not tell you

We will not tell you the published laboratory capacities are what your system will achieve. They were measured on ECAP- and HEBM-processed composites at around 375 °C. Magnesium storage is a high-temperature system and any supplier who leaves that out is selling you a headline.
We will not quote the AZ31 figure at you when your system is AZ61, or the reverse. Different alloys, different catalyst loadings, different numbers — 6.89 wt% and 6.15 wt% are not interchangeable.
We will not claim a BET or particle-size value we have not been given. Where we have the manufacturer's specification, we say so and label it as such.

Ask for the material

Tell us the paper or the application — a real person replies within 1–2 business days.