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CHEMICAL PHYSICS LETTERS · 2022 · IF 2.719

Design of nanoneedles-studded nanosheets on cactus-like Mo-WO3 nanoarchitecture for boosted NO2 sensing performance

Lifeng Han,Yuheng Liu,Chaoqun Chang,Meng Liu,Zhikun Peng,Feilong Gong

We reported the design of cactus-like Mo-WO 3 nanoarchitecture assembled of 1D nanoneedles and 2D nanosheets for achieving a highly improved NO 2 sensing performance. The nanoneedles were vertically studding between the nanosheets forming a cactus-like WO 3 nanoarchitecture, leading to highly exposed absorption sites. Mo was introduced in the WO 3 nanoarchitecture to introduce oxygen vacancy, resulting in highly activated sites. The resultant 2%Mo-WO 3 delivered the sensitivity (Rg/Ra) of 285 to 10 ppm NO 2 , which was nearly three-times higher than that of pristine WO 3 . The recovery time was only 24 s, which was greatly decreased, compared with 172 s of pristine WO 3 .

CAS / MDL: 10241-05-1

研究领域: 材料科学 · 纳米技术 · 环境传感

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JOURNAL OF POWER SOURCES · 2025 · IF 7.9

Tailoring Mo/W ratio in Mo/WO3@ZnIn2S4 for regulating the round-the-clock photocathodic protection

Jiajia Cai,Yongjun Li,Zhi Zhang,Aobo Cui,Zhengxin Cai,Qian Xie,Jianmin Wang

The low sustainable current density in darkness restricts the advancement of photocathodic protection (PCP) for steels in marine environments. A combination of MoO 3 /WO 3 (Mo/WO 3 ) was proposed as an electron storage system to enhance capacitance and charge/discharge rates. Subsequently, incorporating ZnIn 2 S 4 (ZIS) extended light harvesting and improved photocarrier separation efficiency, resulting in efficient round-the-clock PCP performance. Under illumination, the open circuit potential (OCP) of 10Mo/WO 3 @ZIS coupled with 304SS reaches −0.97 V vs. Ag/AgCl, approximately 600 mV and 140 mV more negative than corrosion potential (E corr ) of 304SS and WO 3 @ZIS coupled 304SS, whth photocurrent density of 134 μA/cm 2 . The excellent PCP performance is attributed to superior photocarrier separation and enhanced light-harvesting capability. Notably, in the dark, the OCP of the coupled system remains ca . 0.4 V below the E corr of 304SS, with an average current density of 30 μA/cm 2 , demonstrating the regulated electron storage capabilities of Mo/WO 3 . Furthermore, capacity and charge/discharge rates correlate with Mo/W ratio and electrolyte species. 10Mo/WO 3 @ZIS exhibits a charge capacity of 2.93 mC, nearly 3 times higher than that of WO 3 @ZIS. The innovative application of MoO 3 and WO 3 proves the potential to regulate the electron storage performance, revealing the factors for photoelectron storage/release.

CAS / MDL: 12054-85-2 22519-64-8 10213-10-2 62-55-5

研究领域: 材料科学 · 电化学 · 海洋工程

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ACS Sensors · 2026 · IF 10.9

Synergistic Optimization in Ru-Sensitized Mo-WO3 Nanosheets for Ultrasensitive ppb-Level H2S Sensing and Real-Time Wireless Oral Health Monitoring

Jie Hu,Yong Chen,Xuni Yin,Qi Zeng,Chang Chen,Jiu Yin

Although metal oxide semiconductors are promising candidates for practical disease diagnosis based on H2S detection, achieving high sensitivity and a low detection limit remains a considerable challenge. In this work, Ru-functionalized Mo-doped WO3 (Ru@Mo-WO3) nanosheets were successfully synthesized via a simple hydrothermal process followed by annealing and chemical reduction. The H2S sensing performances of all WO3-based sensors were systematically investigated. The optimized Ru@Mo-WO3 sensor exhibited a remarkable response of 120 to 5 ppm H2S at the optimal operating temperature, which was approximately 30 times higher than that of pristine WO3. Moreover, the Ru@Mo-WO3 sensor demonstrates short response times, excellent H2S selectivity, and remarkable long-term stability with a low detection limit (7.9 ppb). Comprehensive experimental analyses and density functional theory (DFT) simulations reveal that the significant enhancement in sensing performance originates from the synergistic effects of Mo doping and Ru sensitization. Meanwhile, a wireless gas-detection device based on the as-fabricated Ru@Mo-WO3 gas sensor was developed to achieve real-time monitoring of oral H2S for noninvasive oral hygiene assessment. This study offers a promising strategy for the rational design of high-performance WO3-based H2S sensors.

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Design of nanoneedles-studded nanosheets on cactus-like Mo-WO3 nanoarchitecture for boosted NO2 sensing performance

Tailoring Mo/W ratio in Mo/WO3@ZnIn2S4 for regulating the round-the-clock photocathodic protection

Synergistic Optimization in Ru-Sensitized Mo-WO3 Nanosheets for Ultrasensitive ppb-Level H2S Sensing and Real-Time Wireless Oral Health Monitoring