Multilayer activated biochar/UiO-66-NH2 film as intelligent sensing platform for ultra-sensitive electrochemical detection of Pb2+ and Hg2+

An electrochemical sensor based on a MOF/ZnO composite for the highly sensitive detection of Cu(ii) in river water samples

“…† The BET surface area and total pore volume of UiO-66-NH 2 are 933.2075 m 2 g −1 and 0.6914 cm 3 g −1 , respectively; this result proves that UiO-66-NH 2 has a large specific surface area. 23 The BET surface area of UiO-66-NH 2 /ZnO is 433.4271 m 2 g −1 , which is lower than that of UiO-66-NH 2 .…”

“…1a and d ) that the morphology of UiO-66-NH 2 prepared by a hydrothermal synthesis method was regular and presented a uniform octahedral structure with a size of about 50–200 nm. 23 SEM and TEM images of ZnO ( Fig. 1b and e ) show that ZnO nanorods have a nanorod structure with an average diameter of 250 nm and a hexagonal wurtzite crystal structure.…”

“… 22 Chen et al prepared a multilayer biochar/UiO-66-NH 2 film by layered deposition technology, which can detect Pb( ii ) and Hg( ii ) sensitively. 23 Zou et al used the hydrothermal method to prepare UiO-66-NH 2 @MWCNT composite materials, which realized the rapid detection of cadmium ions in meat products. 24 …”

Intelligent analysis of carbendazim in agricultural products based on a ZSHPC/MWCNT/SPE portable nanosensor combined with machine learning methods

“…The performance of the developed models was evaluated by the root mean square error (RMSE), determination coefficient (R 2 ), mean absolute error (MAE) and residual prediction deviation (RPD). 35,36 3 Results and discussion…”

Ultrasensitive Luteolin Electrochemical Sensor Based on Novel Lamellar CuZn@ Nitrogen-Containing Carbon Nanosheets

“…In recent years, metal–organic frameworks (MOFs) with polymetallic nodes have been employed as excellent precursors for the fabrication of electrochemical sensor materials [ 21 , 22 , 23 ]. MOF can be turned into N-doped carbon materials (NC) with strong electrical conductivity and high specific surface area through easy pyrolysis, while their morphological structure remains orderly, and in which the metal nodes can be reduced to metal nanoparticles, which can then be inserted into the N-doped carbon materials, revealing their intrinsic active sites [ 24 , 25 ].…”