Zinc oxide inverse opal electrodes modified by glucose oxidase for electrochemical and photoelectrochemical biosensor

A sensitive photoelectrochemical biosensor for AFP detection based on ZnO inverse opal electrodes with signal amplification of CdS-QDs

“…So it is still very necessary to develop a novel, highly sensitive and alternative detection method of AFP. As a widely attracted for the interest of method, PEC measurements have successfully detected numerous materials, such as glucose, ascorbic acid, cysteine, AFP and carcinoembryonic antigen (Li et al, 2013;Li et al, 2012;Xia et al, 2014;Zhao et al, 2012;Wen and Ju, 2015). In addition, PEC biosensors are detection methods based on photocatalytic oxidation or reduction biological molecules, which make photogenerated electrons transferred between the semiconductor electrode and the substances to be detected under light to enhance the PEC response (Wang et al, 2009).…”

“…The slow light effect in 3D-PC could increase the effective optical path length and increase the photovoltaic response on photovoltaic cells and the photochemical process (Sakoda, 1999;Baba, 2008;Chen et al, 2006Chen et al, , 2007Chen et al, , 2008. Additionally, the uniform porous structures of inverse opals photonic crystal(IOPCs) possess a large surface area which is helpful of electron transfer and biomolecule immobilization, and shorten the distance of electron diffusion between the FTO substrate and the immobilized subatance, thereby facilitating the capability of electron transfer (Xia et al, 2014).…”

Development of a Photoelectrochemical Lactic Dehydrogenase Biosensor Using Multi-Wall Carbon Nanotube -Tio 2 Nanoparticle Composite as Coenzyme Regeneration Tool

“…Therefore, the PEC technique is believed to be a promising analytical method for biological assay [7] and has attracted considerable interests in developing PEC enzymatic biosensors [6,[8][9][10]. Most interestingly, the photocurrent obtained at the PEC enzymatic biosensors can be further enhanced compared to that at the conventional PEC sensors owing to the strong interaction between the illuminated photoactive semiconductors and the biocatalyzed products, which can retard the recombination between photo-generated holes and electrons [11][12][13]. For example, a visible light induced PEC glucose oxidase (GOx) biosensor based on oxygen-sensitive CdTe quantum dots (QDs) was developed for the detection of glucose [11].…”

A photoelectrochemical biosensor for determination of DNA based on flower rod-like zinc oxide heterostructures

“…Currently, several related researches are focused on enhancing the ability of PEC biosensor [16] by associating multifunctional nanometer materials [17], such as ZnO [18,19], TiO 2 [2,20], SnO 2 [21]. ZnO, a wide band gap of 3.37 eV semiconductor with large excitation binding energy of 60 meV at room temperature, has been widely investigated due to its potential wide-ranging applications [22][23][24], such as photocatalyst, solar cell, PEC sensor, nanogenerater ect.…”