Large area continuous multilayer graphene membrane for water desalination
Chemical Engineering Journal, ISSN: 1385-8947, Vol: 413, Page: 127510
2021
- 23Citations
- 35Captures
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Article Description
This manuscript reports the preparation of a large area (84 cm 2 ) desalination membrane based on multilayers (11 nm thickness) of B,N-codoped defective graphene. The process consists of coating a porous ceramic α-Al 2 O 3 support (100 nm pore size) with a continuous nanometric (50 nm) chitosan film containing adsorbed (NH 4 ) 3 BO 3. Subsequent pyrolysis in the presence of hydrogen converts chitosan into multilayer defective B,N-codoped graphene. The partial removal of B and N dopant atoms by H 2 during the pyrolysis causes the generation of subnanometric pores due to atom vacancy, as determined by control experiments in the absence of this gas. A NaCl and KCl removal efficiency from brackish water higher than 95% for a permeate flux of 24.3 L m −2 h −1 at 10 bars were achieved.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S1385894720336329; http://dx.doi.org/10.1016/j.cej.2020.127510; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85094921458&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S1385894720336329; https://api.elsevier.com/content/article/PII:S1385894720336329?httpAccept=text/xml; https://api.elsevier.com/content/article/PII:S1385894720336329?httpAccept=text/plain; https://dul.usage.elsevier.com/doi/; https://dx.doi.org/10.1016/j.cej.2020.127510
Elsevier BV
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