/pdf/two-dimensional-material-based-electrochemical-sensors-3hpcys9u.pdf

Two-Dimensional Material-Based Electrochemical Sensors/Biosensors for Food Safety and Biomolecular Detection

The utilization of 3D nano-materials as sensors and detectors for several systems is continuously being exploited, moreover, the detection limit by already existing devices is still below the hallmark of 100% efficiency. Hence the efficacy of Al12N12, Ca12O12, and Mg12O12-nanostructured materials is exploited in this study for the efficient detection of phosgene. Density functional theory (DFT) approach has been utilized to arrive at the various conclusions and to ascertain the adsorption and sensing attributes of the studied nano-materials. The PBE0, ωB97XD, and M06–2X functionals at the 6–311 + +G(d,p) basis set were utilized for the computations of various molecular properties. In all cases, the Ca12O12 nanostructured material emerged as the most suitable surface for the efficient detection of phosgene, this was confirmed by its molecular electronic properties (energy gap), adsorption energy and other topological investigation. This conclusive scientific report was due to stronger adsorptions observed in C2 complex with adsorption energies − 4.7937 and − 4.5378 kcal/mol in PBE0 and ωB97X-D respectively. Also, relatively least energy gap, chemical hardness and electron potential values of 2.0104, 1.0052 and 6.4978 eV in C2 complex, indicating lowest stability and greatest reactivity and conductivity. This result indicates that the adsorption energy values were lesser using ωB97X-D than using PBE0 functional. Therefore, Ca12O12 surface is a better sensor than Al12N12 and Mg12O12 surfaces for phosgene gas adsorption. 

Modeling of Ca12O12, Mg12O12, and Al12N12 nanostructured materials as sensors for phosgene (Cl2CO)

Carbonyl sulfide gas detection by pure, Zn- and Cd-decorated AlP nano-sheet

Recent application of cobalt ferrite nanoparticles as a theranostic agent

Ultrahigh sensitive and selective room-temperature carbon monoxide gas sensor based on polypyrrole/titanium dioxide nanocomposite

Metal oxide nanoparticles have been widely utilized for the fabrication of functional gas sensors to determine various flammable, explosive, toxic, and harmful gases due to their advantages of low cost, fast response, and high sensitivity. However, metal oxide-based gas sensors reveal the shortcomings of high operating temperature, high power requirement, and low selectivity, which limited their rapid development in the fabrication of high-performance gas sensors. The combination of metal oxides with two-dimensional (2D) nanomaterials to construct a heterostructure can hybridize the advantages of each other and overcome their respective shortcomings, thereby improving the sensing performance of the fabricated gas sensors. In this review, we present recent advances in the fabrication of metal oxide-, 2D nanomaterials-, as well as 2D material/metal oxide composite-based gas sensors with highly sensitive and selective functions. To achieve this aim, we firstly introduce the working principles of various gas sensors, and then discuss the factors that could affect the sensitivity of gas sensors. After that, a lot of cases on the fabrication of gas sensors by using metal oxides, 2D materials, and 2D material/metal oxide composites are demonstrated. Finally, we summarize the current development and discuss potential research directions in this promising topic. We believe in this work is helpful for the readers in multidiscipline research fields like materials science, nanotechnology, chemical engineering, environmental science, and other related aspects.

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The Combination of Two-Dimensional Nanomaterials with Metal Oxide Nanoparticles for Gas Sensors: A Review

Environmental pollution is a global problem that endangers human health and ecological balance. As a new type of nanomaterial, two-dimensional material (2DM)-based aerogel is one of the most promising candidates...

https://pubs.rsc.org/en/content/articlepdf/2022/nh/d1nh00633a

Two-dimensional material-based functional aerogels for treating hazards in environment: Synthesis, functional tailoring, applications, and sustainability analysis

Recent advances in photonic crystal-based sensors

Abstract Nanomaterial-based phototherapy has become an important research direction for cancer therapy, but it still to face some obstacles, such as the toxic side effects and low target specificity. The biomimetic synthesis of nanomaterials using biomolecules is a potential strategy to improve photothermal therapy (PTT) and photodynamic therapy (PDT) techniques due to their endowed biocompatibility, degradability, low toxicity, and specific targeting. This review presents recent advances in the biomolecule-mimetic synthesis of functional nanomaterials for PTT and PDT of cancers. First, we introduce four biomimetic synthesis methods via some case studies and discuss the advantages of each method. Then, we introduce the synthesis of nanomaterials using some biomolecules such as DNA, RNA, protein, peptide, polydopamine, and others, and discuss in detail how to regulate the structure and functions of the obtained biomimetic nanomaterials. Finally, potential applications of biomimetic nanomaterials for both PTT and PDT of cancers are demonstrated and discussed. We believe that this work is valuable for readers to understand the mechanisms of biomimetic synthesis and nanomaterial-based phototherapy techniques, and will contribute to bridging nanotechnology and biomedicine to realize novel highly effective cancer therapies. 

/pdf/biomolecule-mimetic-nanomaterials-for-photothermal-and-2k9490kc.pdf

Guozheng Yang

Papers

The Combination of Two-Dimensional Nanomaterials with Metal Oxide Nanoparticles for Gas Sensors: A Review

Two-Dimensional Material-Based Electrochemical Sensors/Biosensors for Food Safety and Biomolecular Detection

Two-dimensional material-based functional aerogels for treating hazards in environment: Synthesis, functional tailoring, applications, and sustainability analysis

Recent advances in photonic crystal-based sensors

Biomolecule-mimetic nanomaterials for photothermal and photodynamic therapy of cancers: Bridging nanobiotechnology and biomedicine