Alfredo Hernández Martínez

[Alfredo Hernández Martínez @Alfredo_cation]

“Hi @LatinXChem, presenting my work ‘Detección electroquímica de cafeína en electrodos oxidados de carbón’ at #LatinXChem23 #Ana59 #LatinXChemAna @aguilarjuliox

[Alfredo Hernández Martínez @Alfredo_cation]

@Daffytha @LatinXChem @aguilarjuliox Por lo que el sistemas es técnicamente reversible, pero la relación de corrientes de pico es distinto a la unidad, probablemente porque el mecanismo de reacción sea más complicado que lo que estamos proponiendo.

[Alfredo Hernández Martínez @Alfredo_cation]

“Hi @LatinXChem, presenting my work ‘Detección electroquímica de cafeína en electrodos oxidados de carbón’ at #LatinXChem23 #Ana59 #LatinXChemAna @aguilarjuliox

[Alfredo Hernández Martínez @Alfredo_cation]

@Daffytha @LatinXChem @aguilarjuliox Esta propuesta es una primera aproximación con la que intentamos describir al sistema. La diferencia de potencial entre picos para pH 1.5 a 2.5 (líneas Roja, verde y azul) es de 70, 60 y 60 mV, respectivamente.

[Alfredo Hernández Martínez @Alfredo_cation]

@criskalinke @LatinXChem @aguilarjuliox As we can see, the lowest value is obtained in the unmodified electrode, and the increase in this parameter as a function of oxidation time could suggest surface functionalization (ferro/ferri experiences some electrostatic repulsion by the surface)

[Alfredo Hernández Martínez @Alfredo_cation]

@criskalinke @LatinXChem @aguilarjuliox Sure, Rct depends on the reaction in which we are estimating it. ferro/ferri is a charged species, so surface charge has an effect on the Rct value.

[Alfredo Hernández Martínez @Alfredo_cation]

@Daffytha @LatinXChem @aguilarjuliox Desafortunadamente no conocemos le mecanismo, ya que para determinar el grupo funcional o grupos funcionales que estan reaccionando requerimos de espectroscopias que nos ayuden a caracterizar los.

[Alfredo Hernández Martínez @Alfredo_cation]

@Daffytha @LatinXChem @aguilarjuliox De forma que al graficar potencial de media onda vs pH puede obtener la relación de protones y electrones que se intercambian.

[DAVID @dcmonx]

Hola! @LatinXChem, presentando mi trabajo ‘Abundancia de microplasticos en cinco playas de Chiapas, México’ at #LatinXChem23 #LatinXChemEnv #Env087 @KhirbetLopez @sollebac @UPTapachula

[Alfredo Hernández Martínez @Alfredo_cation]

@criskalinke @LatinXChem @aguilarjuliox The electrode oxidized at 25 cycles showed a higher current in the experiments in Figure 4 and that is why it was used.

[Alfredo Hernández Martínez @Alfredo_cation]

@criskalinke @LatinXChem @aguilarjuliox The measurement cannot be made on an bare electrode because initially the anodic barrier is given by the oxidation of the electrode at +1 V. Once oxidized it moves to higher values, which allows the measurement to be carried out.

[Alfredo Hernández Martínez @Alfredo_cation]

@criskalinke @LatinXChem @aguilarjuliox "Activation" means "an improvement of electrocatalytic properties" as a reduce of charge transfer resistance. But in this case we found that the oxidation can be carry out in certian conditions to reduce the Rct.

[LatinXChem @LatinXChem]

The organizers and judges of the #LXChemComp category, together @digital_rsc of the @RoySocChem, award the prize for best poster to @beatrizcastrogm of @CIQUAEM for her poster entitled "Estructura y dinámica dependientes del espín: cúmulos de oxígeno molecular"

[LatinXChem @LatinXChem]

The organizers and judges of the #LXChemComp category with @SuntheticsML, award the second best poster to @Val_BonillaGo of @UNALOficial for her poster entitled "Energy transfer in light-harvesting macromolecules"

[LatinXChem @LatinXChem]

The organizers and judges of #LXChemEnvAna category, together @ChemistrySelect of @Wiley_Chemistry, award the prize for best poster to @criskalinke of @unicampoficial for her poster "3D printed electrochemical sensor for the detection of bisphenol A in food and water samples"

[Myriam Arauz @D_arauz02]

Hola! #LatinXChem este es mi trabajo titulado "DETECCIÓN DE PLOMO EN LABIALES DE COLORES VIVOS DE ALTO CONSUMO" #LatinXChem22 #LXChemEnvAna #EnvAna022 #LatinXChem

[Ramon Domingues @domingues_lqa]

Hi, @LatinXChem! This is my work "Occurrence of Microplastics in Wastewater Treatment Plants"! #LatinXChem22 #LXChemEnvAna #EnvAna029 #microplastics

[Karla Machado Torres @KarlaMachadoTo1]

Hola @LatinXChem Community. Este es mi trabajo "Potencialidades del uso de Sargassum sp como fertilizante de liberación lenta".
#LatinXChem22
#LXChemEnvAna
#EnvAna060

[Alfredo Hernández Martínez @Alfredo_cation]

Suban le al volúmen 👀🎧

[Alfredo Hernández Martínez @Alfredo_cation]

Hi @LatinXChem, this is my work 'Modificación de electrodos de carbón vítreo para la detección indirecta de transferrina', #LatinXChem22 #LXChemEnvAna #EnvAna009