The transient boiling of an aqueous suspension with graphene oxide nanosheets (GONs)

at a mass fraction of 0.002%

was characterized using the quenching method. The effects of GONs deposited on the boiling surface were compared among three representative cases. With the deposition of GONs during the transition boiling phase

the quenching period of the suspension was shortened by 10 s as compared to that of deionized water

while the critical heat flux (CHF) was improved by 10% and the contact angle was reduced from 104° to 78°. After subsequent quenching of the boiling surface with GON deposition in deionized water

the contact angle was increased to 89° and the CHF was somewhat deteriorated. It was concluded that the enhancement of CHF is primarily resulted from surface deposition of GONs. The quenching speed and the heat transfer rate during the transition boiling phase are also affected by the dynamic deposition process and the suspended GONs.