Chemoresistive Gas Sensors Based on Noble-Metal-Decorated Metal Oxide Semiconductors for H2 Detection

Materials, Год журнала: 2025, Номер 18(2), С. 451 - 451

Опубликована: Янв. 19, 2025

Hydrogen has emerged as a prominent candidate for future energy sources, garnering considerable attention. Given its explosive nature, the efficient detection of hydrogen (H2) in environment using H2 sensors is paramount. Chemoresistive sensors, particularly those based on noble-metal-decorated metal oxide semiconductors (MOSs), have been extensively researched owing to their high responsiveness, low limits, and other favorable characteristics. Despite numerous recent studies reviews reporting advancements this field, comprehensive review focusing rational design sensing materials enhance overall performance chemoresistive MOFs lacking. This aims address gap by examining principles, applications, challenges with specific focus Pd-decorated Pt-decorated MOSs-based materials. The observations explanations strategies employed literature, within last three years, analyzed provide insights into latest research directions developments domain. understanding essential designing fabricating highly sensors.

Язык: Английский

---

Room-temperature H2 gasochromic behaviors of highly sensitive hexagonal phase WO3/Pt nanorods for eye-readable hydrogen leakage detection

Sensors and Actuators B Chemical, Год журнала: 2025, Номер 427, С. 137221 - 137221

Опубликована: Янв. 5, 2025

Язык: Английский

---

Influence of Different Synthesis Methods on the Defect Structure, Morphology, and UV-Assisted Ozone Sensing Properties of Zinc Oxide Nanoplates

Chemosensors, Год журнала: 2025, Номер 13(4), С. 152 - 152

Опубликована: Апрель 20, 2025

In this work, room-temperature UV-assisted ozone detection was investigated using ZnO nanoplates synthesized via precipitation, ultrasound-, ultrasonic tip-, and microwave-assisted hydrothermal (MAH) methods. X-ray diffraction confirmed the formation of crystalline phases with an ~3.3 eV band gap, independent synthesis used. Raman spectroscopy revealed oxygen-related defects. Plate-like morphologies were observed, tip-assisted yielding ~17 nm-thick plates. Electrical measurements showed 10–170 ppb sensitivity under UV. The sample MAH method (ZM) demonstrated superior conductance, a baseline resistance ~1.2% for ultrasound (ZU) less than 50% precipitation (ZA) tip (ZP) samples. Despite appreciable response in dark mode, recovery slow (>>30 min), except UV illumination condition, which reduced to ~2 min. With top areas ~0.0122 µm2, ZP ZU high specific surface (24.75 19.37 m2/g, respectively), contrast ZM, exhibited lowest value (15.32 m2/g) area ~0.0332 µm2 thickness 26.0 nm. performance ZM attributed larger nanoplate sizes lower resistance. due higher depletion layer effect. results indicate that methods presented herein production reactive NaOH as growth-directing agent are reliable, simple, cost-effective, addition being capable detecting reproducibility at concentrations low 10 ppb.

Язык: Английский

---

Facile design based on (0 0 2) crystal-exposed snowflake-like CuO/WO3: H2S gas sensor with ultra-high and fast response possible

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

---

Enhanced NO2 Sensing Performance of WO3 Nanoparticles Prepared with Glycine

Sensors and Actuators A Physical, Год журнала: 2025, Номер unknown, С. 116690 - 116690

Опубликована: Май 1, 2025

Язык: Английский

---

WO3 decoration modulates the hydrogen spillover and oxygen activation over Pd/WO3-SnO2 nanotube for ultrafast hydrogen sensing

Sensors and Actuators B Chemical, Год журнала: 2025, Номер unknown, С. 138055 - 138055

Опубликована: Май 1, 2025

Язык: Английский

---