As shown in Table 1 , the BET surface area and total pore volume of CNF membranes demonstrate a decreasing trend with the increase in citric acid cross-linking, which is in good agreement with previous literature [ 66 , 67 , 68 ].
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As shown in Table 1 , the BET surface area and total pore volume of CNF membranes demonstrate a decreasing trend with the increase in citric acid cross-linking, which is in good agreement with previous literature [ 66 , 67 , 68 ].