{'fraction_non_alphanumeric': 0.021963824289405683, 'fraction_numerical': 0.011627906976744186, 'mean_word_length': 5.271255060728745, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Role of transition metals in layered double hydroxides for differentiating the oxygen evolution and non-enzymatic glucose sensing.

Layered double hydroxides (LDH) belongs to class of two-dimensional materials having wide variety of applications ranging from energy storage to catalysis. Often these materials when used for non-enzymatic electrochemical glucose sensing they tend to be interfering with oxygen evolution reaction resulting in overestimating of the glucose. Herein, to address this, NiFe based LDH were selected because of their ability to vary the metal ratios. Synthesized LDH have been characterized using various spectroscopic and microscopic techniques. Among the LDH synthesized, Ni4Fe-LDH has been able to differentiate the glucose oxidation potential and onset potential of OER with minmum interference. The Ni4Fe-LDH sensor shows sensitivity of 20.43 µA mM-1 cm-2 in the linear range of 0 to 4 mM concentrations. To further enhance the sensitivity, composites of rGO have been synthesized in-situ and Ni4Fe:rGO5 composite have shown an increased sensitivity of 176.8 µA mM-1 cm-2 and is been attributed to the charge-transfer interactions. To understand the experimental observations, detailed computational studies have been carried out to study the effect of electronic structure on the metal ratios of the LDH and its role in differentiating glucose sensing and oxygen evolution reaction. Along with this, theoretical calculations are also carried out on LDH-graphene composites to study the charge-transfer interactions.