najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2025-16-5-669-680najo-1538Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХIncorporating manganese selenide with polymerized reduced carbon sheets: an efficient and stable electro-catalyst for methanol oxidationВключение селенида марганца в полимеризованные листы восстановленного углерода: эффективный и стабильный электрокатализатор окисления метанолаhttps://orcid.org/0009-0000-7962-8666КавитаМуруганKavithaM.

Kavitha Murugan – PG and Research Department of Chemistry

Thoothukudi-628008, Tamilnadu; Abishekapatti, Tirunelveli-627012, Tamilnadu

kavithakrithiv35@gmail.comhttps://orcid.org/0000-0001-6855-8375КалайарасиСентурпандиKalaiarasiS.

Kalaiarasi Senthurpandi – PG and Research Department of Chemistry

Thoothukudi-628002, Tamilnadu; Abishekapatti, Tirunelveli-627012, Tamilnadu

kalaiarasi@apcmcollege.ac.inhttps://orcid.org/0000-0002-3446-0641ВедхиЧиннапайянVedhiC.

Vedhi Chinnapaiyan – PG and Research Department of Chemistry

Thoothukudi-628008, Tamilnadu; Abishekapatti, Tirunelveli-627012, Tamilnadu

cvedhi23@gmail.comhttps://orcid.org/0000-0002-2769-8045МутучударкодиРаджа РамMuthuchudarkodiR. R.

Muthuchudarkodi Rajaram – PG and Research Department of Chemistry

Thoothukudi628008, Tamilnadu; Abishekapatti, Tirunelveli-627012, Tamilnadu

muthu.rajaram@gmail.comV.O. Chidambaram College; Affiliated to Manonmaniam Sundaranar UniversityIndiaA.P.C Mahalaxmi College for Women; Affiliated to Manonmaniam Sundaranar UniversityIndia202505112025165669680Copyright © Kavitha M., Kalaiarasi S., Vedhi C., Muthuchudarkodi R.R., 20252025Кавита М., Калайараси С., Ведхи Ч., Мутучударкоди Р.Р.Kavitha M., Kalaiarasi S., Vedhi C., Muthuchudarkodi R.R.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1538

Reduced graphene oxide/Manganese selenide @Poly-N-methyl pyrrole (RGO/MnSe@P-NMPy) polymer nanocomposite are synthesized via chemical oxidative in-situ polymerization process. The RGO/ MnSe@P-NMPy polymer nanocomposite was examined using FTIR spectroscopy, UV-Visible, XRD, TEM and electrochemical investigations in addition to FESEM with EDAX. The methanol oxidation reaction in basic environments was validated using the cyclic voltammetry method. The RGO/MnSe@P-NMPy polymer nanocomposite electro-catalyst shows excellent electrocatalytic activity, lower oxidation potential (0.1 V), improved current density (96 mA/cm2 ), and excellent stability towards methanol oxidation reaction (MOR) in basic medium. It was observed RGO/MnSe@P-NMPy nanohybrid electrocatalyst, the ECSA value is 183.7 m2 /g. This result clearly depicts that RGO/MnSe@P-NMPy polymer nanocomposite electro-catalyst has more active sites for MOR reaction. Chronoamperometry was utilized to show that, in comparison to the other nanocomposite, the existence of RMP polymer nanocomposite enhanced stability (1000’s) and produced higher current densities (27.71 mA/cm2 ) for methanol oxidation. According to the results, the P-NMPy introduction in RGO/MnSe structure can enhance the performance of methanol oxidation and increase the resistance to CO in comparison with mono metallic catalyst. This study makes the case for the potential development of high-performance, inexpensive catalysts for energy storage, conversion and useful uses.

Полимерный нанокомпозит восстановленный оксид графена/селенид марганца @поли-N-метилпиррол (RGO/MnSe@P-NMPy) синтезирован методом химической окислительной полимеризации in situ. Исследование полимерного нанокомпозита RGO/MnSe@P-NMPy проводилось с помощью ИК-Фурье-спектроскопии, УФ-видимой спектроскопии, рентгеновской дифракции, просвечивающей электронной микроскопии (ПЭМ) и электрохимических исследований, а также методом FESEM с использованием EDAX. Реакция окисления метанола в основных средах была подтверждена методом циклической вольтамперометрии. Электрокатализатор RGO/MnSe@P-NMPy демонстрирует превосходную электрокаталитическую активность, более низкий окислительный потенциал (0,1 В), повышенную плотность тока (96 мА/см²) и превосходную стабильность в реакции окисления метанола (MOR) в основных средах. Для наногибридного электрокатализатора RGO/MnSe@P-NMPy значение ECSA составило 183,7 м²/г. Этот результат наглядно демонстрирует, что полимерный нанокомпозит RGO/MnSe@P-NMPy имеет больше активных центров для реакции MOR. Хроноамперометрия использовалась для демонстрации того, что по сравнению с другими нанокомпозитами наличие полимерного нанокомпозита RMP повышает стабильность (в 1000 раз) и обеспечивает более высокую плотность тока (27,71 мА/см²) окисления метанола. Согласно полученным результатам, введение P-NMPy в структуру RGO/MnSe может улучшить эффективность окисления метанола и повысить устойчивость к CO по сравнению с монометаллическим катализатором. Данное исследование обосновывает потенциальную разработку высокоэффективных и недорогих катализаторов для хранения, преобразования энергии и других полезных применений.

RGOMnSeполи-N-метилпиррол (P-NMPy)RGO/MnSe@P-NMPy (RMP)плотность токареакция окисления метанола (MOR)RGOMnSePoly-N-methyl pyrrole (P-NMPy)RGO/MnSe@P-NMPy (RMP)current densitymethanol oxidation reaction (MOR)The authors are extremely grateful to Department of Science and Technology (FAST TRACK and FIST) New Delhi, INDIA for using CHI Electrochemical workstation at V.O. Chidambaram College, Tuticorin-8 and Jasco UV-VISIBLE Spectrophotometer. We are thankful to The Secretary of A.P.C Mahalaxmi College for women, Thoothukudi.ReferencesCompton O.C., Jain B., Dikin D.A., Abouimrane A., Amine K., Nguyen S.T. Chemically active reduced graphene oxide with tunable C/O ratios. ACS Nano, 2011, 5 (6), P. 4380–4391.Compton O.C., Jain B., Dikin D.A., Abouimrane A., Amine K., Nguyen S.T. Chemically active reduced graphene oxide with tunable C/O ratios. ACS Nano, 2011, 5 (6), P. 4380–4391.Ennaoui A., Fiechter S., Jaegermann W., Tributsch H. 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The authors declare that there are no conflicts of interest present.