Article
Electrochemistry
Hongqian Sun, Yunpeng Li, Zhiyu Zhang, Jing Song, Liangliang Tian, Zhenqian Cheng, Mingjun Zhou, Tao Qi
Summary: This study developed a NO2 gas sensor based on yttrium-stabilized zirconia (YSZ) using a hard-template method and evaporation self-assembly technology. The sensor showed efficient gas-sensing performance due to the use of a nickel oxide sensing electrode and a three-dimensional ordered macroporous (3DOM) structure as the three-phase boundary. By changing the three-phase reaction boundary, the sensitivity of the sensor was significantly improved, with a response value 1.91 times higher than that of the untreated YSZ-based sensor at 450 degrees C and 100 ppm NO2. The 3D-ordered structure also exhibited good selectivity and long-term stability.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
Siyuan Lv, Yueying Zhang, Li Jiang, Lianjing Zhao, Jing Wang, Fangmeng Liu, Chenguang Wang, Xu Yan, Peng Sun, Lijun Wang, Geyu Lu
Summary: The sensor fabricated with electrospinning technology showed high sensitivity to NO2, fast response and recovery rates, good repeatability, excellent selectivity, moisture resistance, and long-term stability. The enhanced NO2 sensing performance is attributed to the increased area of three-dimensional TPB providing more active sites for electrochemical reactions.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Hongyin Pan, Chen Yang, Wei Zheng, Xianghong Liu, Yong Wan, Jun Zhang
Summary: A gas sensor based on porous Co3O4 thin films decorated by dual Pt/Rh catalysts is demonstrated for efficient NO2 detection in humid environment. The sensor exhibits high response and moisture resistance due to the three-dimensional ordered microstructure of the Co3O4 thin films and the loading of Pt/Rh catalysts by atom layer deposition (ALD). With optimized ALD Pt and Rh thickness, the sensor shows fast response/recovery speed, a low detection limit and the capability to operate under high humidity.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Kun Hu, Yuanfan Li, Chuanxin Ge, Ling Bai, Guiwu Liu, Guanjun Qiao, Sung Gu Kang, Eui Jung Kim, Mingsong Wang
Summary: In this work, a three-dimensional ordered macroporous Au-loaded SnO2 sensor was developed, demonstrating ultrahigh room-temperature ppb-level NO2 sensitivity under intermittent UV light irradiation. The Au/SnO2 inverse opal structure was fabricated using a polystyrene opal crystal template, with finely dispersed Au nanoparticles anchored on the interconnected walls of SnO2. The decoration of Au nanoparticles improved the NO2 response of SnO2, especially under intermittent UV irradiation. The sensing mechanism responsible for the enhanced response toward NO2 was explained.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Lu Wang, Lihui Wang, Guijuan Li, Yangyang Zhu, Chang Liu, Lingjun Zeng, Sai Zhong, Li Juan Wang
Summary: The CuPc/PVA PNAs sensors, with well-ordered nanofiber arrays, achieved lower detection limit and shorter response and recovery time for gas monitoring compared to sensors with disordered nanofibers. The sensors showed promising results in real-time monitoring of NO2, with minimal impact from humidity.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Composites
Xiaoying Zheng, Li Chen, Shuang Xiao, Zizheng Meng, Hao Liu, Gang Wan, Yin He
Summary: In this work, a high-performance flexible pressure sensor based on ordered double-level nanopillar array films was proposed. The conductive films with double-level nanopillar array microstructures were prepared, and the influence of the structural characteristics on the sensing performance was studied. The sensor showed a high sensitivity of 208.353 kPa1 and an expanded range of 267%.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Xidong Hao, Yinglin Wang, Pengfei Cheng, Shanfu Sun, Luping Xu, Yintang Yang, Yue Hao
Summary: For real-time and in-situ NOx monitoring, a high-performance NO2 mixed potential sensor based on yttria-stabilized zirconia (YSZ) with an MMn2O4 sensing electrode(SE) (M = Co, Cd and Zn) was successfully fabricated. Among the three sensing electrodes, the ZnMn2O4 showed the smallest interface resistance to 100 ppm NO2 and exhibited the highest response. By optimizing the sintering temperature, the ZnMn2O4 sensor sintered at 1000 degrees C achieved the highest response of 23 mV to 10 ppm NO2. The sensor also demonstrated a wide detection range of 1-1000 ppm, with excellent sensitivities and long-term stability.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Yan Yu, Guping He, Ximiao Zhu, Jiahai Yu, Yiwen Shi, Yong Lei, Fengqiang Sun
Summary: A slightly reduced graphene oxide (SrGO) ordered-pore-array was used as a resistive humidity sensor, which retained as many functional groups as possible and had unique structure and exposed functional groups to improve the sensing response.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Analytical
Ning Wang, Jin-Xin Ye, Jia-Bin Sun, Xian-Fa Zhang, Zhao-Peng Deng, Ying-Ming Xu, Li-Hua Huo, Shan Gao
Summary: In this study, a biomorphic In2O3 sensing material (In2O3-600) was successfully prepared, which showed improved response and recovery time for sub-ppm level NO2 detection. The hierarchical structure of the material, along with its multi-stage pores and 1-D microtube structure, promoted rapid diffusion and desorption of the target gas. The material also exhibited good conductivity, active sites, and surface adsorbed oxygen species, leading to enhanced sensor performance.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Hyung-Seok Lim, Won-Jin Kwak, Dan Thien Nguyen, Wei Wang, Wu Xu, Ji-Guang Zhang
Summary: Metal-oxygen batteries (MOBs) are promising for energy storage due to safety, low cost, and high energy density. However, the accumulation of discharge products during the oxygen reduction process can hinder the flow of active species, leading to increased impedance and shortened cycle life. A 3D-SOM structure of ruthenium/single-walled carbon nanotubes air electrode is shown to mitigate these effects and enhance the performance of MOBs.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Ceramics
Baixiong Liu, Cong Li, Lina Zhang, Zhiping Liu, Mengjie Kuang, Xingyu He
Summary: In this study, three-dimensional ordered macroporous/mesoporous MgO was synthesized and showed high adsorption capacity for Cd(II) removal. Batch adsorption experiments confirmed the efficient removal of Cd(II) from water using this material.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Jiali Wu, Yong Yan, Yonghui Hu, Shan Li, Weicheng Xu
Summary: This article presents a study on measuring the flame boundary using an electrostatic sensor array, which shows reliable results for predicting flame properties. The methodology provides important information for the design and operation of combustion systems. The system is capable of providing accurate measurements and determining the overall polarity of charges in a flame.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Environmental
Yali Li, Qinglin Wen, Jiaqi Qin, Siyi Zou, Fandi Ning, Chuang Bai, Saifei Pan, Hanqing Jin, Pengpeng Xu, Min Shen, YuJiang Song, Xiaochun Zhou
Summary: In this study, a high-efficient, contamination-free, and low-consumption nanoimprint method was developed to prepare composite proton exchange membranes (PEMs) with ordered Nafion arrays. The method significantly improves the performance of the composite PEMs and promotes the development of ordered membrane electrode assemblies (MEAs) in various applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yuxiao Feng, Hongtong Hu, Zichen Wang, Yingjie Du, Le Zhong, Chenxi Zhang, Yanjun Jiang, Shiru Jia, Jiandong Cui
Summary: A novel magnetic amino-functionalized ZIF-8 with highly ordered macroporous structure was successfully synthesized using PS nanosphere monoliths as a template, and catalase molecules were immobilized with high efficiency and loading capacity. The immobilized CAT showed 500% higher activity than CAT/ZIF-8 and maintained 90% activity after 8 cycles of reuse, indicating excellent recyclability and enhanced activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Y. Wang, A. Li, C. Cheng
Summary: This article reports a dendrite-free zinc anode with a three-dimensional ordered macroporous structure, which achieves stable electro-chemical reactions and extended lifespan.
MATERIALS TODAY CHEMISTRY
(2022)