The Challenges and Opportunities for TiO₂ Nanostructures in Gas Sensing

ACS Sensors, Год журнала: 2024, Номер 9(4), С. 1644 - 1655

Опубликована: Март 19, 2024

Chemiresistive gas sensors based on metal oxides have been widely applied in industrial monitoring, medical diagnosis, environmental pollutant detection, and food safety. To further enhance the sensing performance, researchers worked to modify structure function of material so that it can adapt different types conditions. Among numerous gas-sensitive materials, n-type TiO2 semiconductors are a focus attention for their high stability, excellent biosafety, controllable carrier concentration, low manufacturing cost. This Perspective first introduces mechanism nanostructures composite TiO2-based nanomaterials then analyzes relationship between properties composition, focusing also technical issues such as doping, heterojunctions, functional applications. The applications challenges nanostructured safety, other fields summarized detail. Finally, context practical application challenges, future development technologies new concepts explored, providing ideas directions multifunctional intelligent various fields.

Язык: Английский

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Aggregation-Induced Emission Luminogen: Role in Biopsy for Precision Medicine

Chemical Reviews, Год журнала: 2024, Номер 124(20), С. 11242 - 11347

Опубликована: Окт. 9, 2024

Biopsy, including tissue and liquid biopsy, offers comprehensive real-time physiological pathological information for disease detection, diagnosis, monitoring. Fluorescent probes are frequently selected to obtain adequate on processes in a rapid minimally invasive manner based their advantages biopsy. However, conventional fluorescent have been found show aggregation-caused quenching (ACQ) properties, impeding greater progresses this area. Since the discovery of aggregation-induced emission luminogen (AIEgen) promoted advancements molecular bionanomaterials owing unique high quantum yield (QY) signal-to-noise ratio (SNR),

Язык: Английский

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Metal-organic framework-based biosensing platforms for diagnosis of bacteria-induced infectious diseases

TrAC Trends in Analytical Chemistry, Год журнала: 2024, Номер 175, С. 117707 - 117707

Опубликована: Апрель 15, 2024

Язык: Английский

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Biodegradable, Humidity‐Insensitive Mask‐Integrated E‐Nose for Sustainable and Non‐Invasive Continuous Breath Analysis

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Abstract Breath analysis offers a non‐invasive approach to modern diagnostics by capturing volatile organic compounds (VOCs) in exhaled breath. However, current breath technologies face challenges like humidity sensitivity, high costs, and biodegradable solutions, limiting their scalability environmental sustainability. This study presents paper‐based, biodegradable, humidity‐insensitive electronic nose (e‐nose) sensor array integrated into mask for real‐time analysis. The sensors, coated with hydrophobic polymer coating, ensure robust insensitivity humidity, enabling reliable detection of VOCs even high‐moisture environments. mask‐integrated e‐nose facilitates monitoring applications such as alcohol consumption tracking respiratory health assessment. For the latter, Tuberculosis (TB) is selected representative use case, achieving 89% accuracy disease diagnosis recovery using pre‐trained deep‐learning model. fully‐biodegradable paper‐based naturally degrades soil within months, underscoring its eco‐friendly design suitability disposable monitoring. work introduces sustainable, user‐friendly potential personalized healthcare

Язык: Английский

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Synergistic sensitization effects of single-atom gold and cerium dopants on mesoporous SnO₂ nanospheres for enhanced volatile sulfur compound sensing

Materials Horizons, Год журнала: 2024, Номер 11(13), С. 3038 - 3047

Опубликована: Янв. 1, 2024

A concept of synergistic sensitization effects involving single-atom Au and Ce dopants on mesoporous SnO 2 nanospheres is proposed for ultrasensitive real-time monitoring ppb-level volatile sulfur compounds.

Язык: Английский

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Unveiling the Systemic Impact of Airborne Microplastics: Integrating Breathomics and Machine Learning with Dual-Tissue Transcriptomics

Journal of Hazardous Materials, Год журнала: 2025, Номер 490, С. 137781 - 137781

Опубликована: Фев. 27, 2025

Язык: Английский

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NIR-II triggered Cu(I) phosphide for chemodynamic and photothermal periodontitis treatment: efficient reduction of bacterial co-aggregation

Acta Biomaterialia, Год журнала: 2024, Номер 187, С. 396 - 408

Опубликована: Авг. 23, 2024

Язык: Английский

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Optical chemical gas sensor based on spectral autocorrelation: a method for online detection of nitric oxide and ammonia in exhaled breath

Sensors and Actuators B Chemical, Год журнала: 2024, Номер unknown, С. 136694 - 136694

Опубликована: Сен. 1, 2024

Язык: Английский

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Nanomaterial Innovations and Machine Learning in Gas Sensing Technologies for Real-Time Health Diagnostics

ACS Sensors, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Breath sensors represent a frontier in noninvasive diagnostics, leveraging the detection of volatile organic compounds (VOCs) exhaled breath for real-time health monitoring. This review highlights recent advancements breath-sensing technologies, with focus on innovative materials driving their enhanced sensitivity and selectivity. Polymers, carbon-based like graphene carbon nanotubes, metal oxides such as ZnO SnO2 have demonstrated significant potential detecting biomarkers related to diseases including diabetes, liver/kidney dysfunction, asthma, gut health. The structural operational principles these are examined, revealing how unique properties contribute key respiratory gases acetone, ammonia (NH3), hydrogen sulfide, nitric oxide. complexity samples is addressed through integration machine learning (ML) algorithms, convolutional neural networks (CNNs) support vector machines (SVMs), which optimize data interpretation diagnostic accuracy. In addition sensing VOCs, devices capable monitoring parameters airflow, temperature, humidity, essential comprehensive analysis. also explores expanding role artificial intelligence (AI) transforming wearable into sophisticated tools personalized enabling disease Together, advances sensor ML-based analytics present promising platform future individualized, healthcare.

Язык: Английский

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High-Sensitivity Room-Temperature Detection of H₂S Using ZnO/Ti₃C₂T_X Nanocomposite: Potential Applications in Exhaled Gas Monitoring

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Апрель 13, 2025

The detection of hydrogen sulfide (H2S) in exhaled breath at room temperature is essential for health monitoring and disease diagnosis. This study investigates a ZnO/Ti3C2TX nanocomposite synthesized by combining ZnO nanoparticles, prepared hydrothermal method, with Ti3C2TX MXene. Experimental results demonstrate that the sensors exhibit excellent H2S performance high sensitivity, rapid response time, robust recovery capability. Specifically, ZnO/Ti3C2TX-1.0 wt % sensor shows 85.116 5 ppm H2S, which 14-fold 35-fold greater than pure MXene, respectively. exhibits (50 s) time (115 100 ppb H2S. Additionally, it exceptional sensitivity to low concentrations, limit as 1 ppb. Based on sensing performance, oral gas demonstrates effectively differentiates levels healthy patient samples. These findings highlight potential temperature, offering new insights developing ultrasensitive biogas sensors.

Язык: Английский

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