1. Abdullah MA, Ali Khan AA, Ajab H (2017) Environmental monitoring by eco-friendly-fabricated carbon-modified electrode sensors. Int J Biosen Bioelectron 2:141–144
2. Aminuzzaman M, Kei LM, Liang WH (2017) Green synthesis of copper oxide (CuO) nanoparticles using banana peel extract and their photocatalytic activities. AIP Conf Proc 1828:020016
3. Bocanegra-Rodríguez S, Jornet-Martínez N, Molins-Legua C, Campíns-Falcó P (2020) New reusable solid biosensor with covalent immobilization of the horseradish peroxidase enzyme: in situ liberation studies of hydrogen peroxide by portable chemiluminescent determination. ACS Omega Sens Actuators B Chem 5(5):2419–2427
4. Bukit N, Frida E, Simamora P, Sinaga T (2015) Synthesis Of Fe3O4 nanoparticles of iron sand coprecipitation method with polyethylene glycol 6000. J Mater Chem 7:110–115
5. Cao X, Xia Z, Yan W, He S, Xu X, Wei Z, Zheng H (2020) Colorimetric biosensing of nopaline synthase terminator using Fe3O4@ Au and hemin-functionalized reduced graphene oxide. Anal Biochem 602:113798