Article
Chemistry, Physical
Gangrong Chen, Yongtao Yuan, Ming Lang, Zeping Lv, Weilin Ma, Naiting Gu, Hong Liu, Jingzhong Fang, Haibin Zhang, Yuntao Cheng
Summary: This study presents a facile and straightforward synthetic strategy for preparing flexible NH3 sensors with high performance and application prospects. By innovatively employing core-shell Au@SiO2 nanocrystals (NCs) doped polyaniline (PANI) as the sensitive material, the NH3 sensors demonstrated high sensitivity, flexibility, and combined reproducibility at room temperature. The sensors also exhibited insusceptibility to ambient relative humidity, making them suitable for environmental NH3 detection and human kidney disease diagnosis.
APPLIED SURFACE SCIENCE
(2022)
Article
Polymer Science
Vishal Chaudhary, Murthy Chavali
Summary: A cost-effective and eco-friendly method was used to synthesize a new class of homogenous core-shell polyaniline-silver nanocomposite, which showed different morphologies depending on the concentration of silver nitrate. The synthesized nanocomposite exhibited high sensitivity and stability towards low concentrations of ammonia, providing potential for the development of affordable commercial sensors.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Engineering, Environmental
Weiyin Su, Shiyu Zong, Kun Lv, Jie Li, E. Yuyu, Zeyu Chang, Xi Yao, Jian Wen, Shengguang Yuan, Mingguo Ma, Kun Wang, Jianxin Jiang
Summary: A nanofiber membrane with biomimetic nanostructure is developed as a carrier for a polysaccharide-based piezoresistive material, showing outstanding performance for real-time monitoring and potential as an indicator material for intelligent skin or soft robots.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Juncai Song, Yuan Wei, Manzhang Xu, Jiuwei Gao, Lei Luo, Hao Wu, Xingji Li, Yue Li, Xuewen Wang
Summary: This work proposes a method for the design, fabrication, and characterization of flexible temperature sensors using temperature-sensitive materials. The sensors show excellent performance with features such as low cost, simple preparation process, fast response time, and the potential to be used in medical rehabilitation and early disease prevention.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Analytical
Shivam Kumar Gautam, Siddhartha Panda
Summary: A highly sensitive copper-based nanocomposite for NH3 detection was reported in this study. The copper-ethylenediamine (Cu-en) nanocomposite functionalized over PANI was utilized for gas sensing, and it detected NH3 concentrations as low as 2 ppm. The sensing mechanism was studied by in-situ IV characteristics and impedance spectroscopy, and it was found that Cu2+ had a strong affinity for NH3, enhancing the sensor response to 100 ppm NH3.
Article
Engineering, Electrical & Electronic
Reshma N. Dhanawade, Nanasaheb S. Pawar, Manik A. Chougule, Gajanan M. Hingangavkar, Yogesh M. Jadhav, Tanaji M. Nimbalkar, Yuvraj H. Navale, Ganesh T. Chavan, Chan-Wook Jeon, Vikas B. Patil
Summary: A room temperature (25 degrees C) NH3 biomarker sensor using polyaniline (PAni)-CeO2 nanohybrid was developed. The nanohybrid exhibits a cubic crystal structure with interconnected nanofiber surface morphology. The sensor shows a significant response towards NH3 gas and has excellent stability, reproducibility, and response time. The interaction mechanism between NH3 gas and the sensor was studied using impedance spectroscopy.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Environmental
Jie Hu, Xueqing Xiong, Wangwang Guan, Yong Chen, Haizhu Long
Summary: This study presents the fabrication process and gas sensing performance of core-shelled Co3O4-CoFe2O4 heterojunction composites with abundant mesoporous structures. The hierarchical Co3O4-CoFe2O4 was prepared using Fe-Co glycerate as a precursor and a subsequent thermolysis method. The well-designed core-shelled architecture showed a large specific surface area and improved absorption-penetration efficiency. The sensor using Co3O4-CoFe2O4 with a core-shell structure exhibited excellent ammonia sensing characteristics, selectivity, and long-term stability. These advancements can be attributed to the unique core-shell architecture and p-p heterojunction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zhiwei Qiu, Yitong Xue, Jiyong Li, Yunzhi Zhang, Xinyi Liang, Congying Wen, Houjian Gong, Jingbin Zeng
Summary: Ammonia is an important component of the atmosphere with environmental balancing role, but it is also a toxic gas that can damage respiratory system and mucous membranes. Researchers have developed an optical probe for detecting ammonia concentration, showing potential for environmental monitoring applications.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Chengcheng Qi, Chongchao Zhang, Ziyin Yang
Summary: A novel strategy of improving the electrocatalytic activity of NiCo2O4 by doping Fe was reported. It was found that the doping of Fe induced the formation of nanorods composed of a crystalline core and a thin amorphous shell. The presence of the thin amorphous shell was shown to accelerate electron transfer rate and expose more effective active sites, enabling the Fe-doped NiCo2O4-based sensor to detect glucose in a wide linear range with high sensitivity and low detection limit.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Analytical
Masanobu Matsuguchi, Tomoki Nakamae, Ryoya Fujisada, Shunsuke Shiba
Summary: This study successfully developed a highly sensitive NH3 gas sensor based on micrometer-sized polyaniline spheres, showing high response values to dry ammonia gas. Compared to PANI-deposited film sensors, this sensor also has a relatively low detection limit.
Article
Chemistry, Physical
Jin Zhou, Seyed Hossein Hosseini Shokouh, Linfan Cui, Topias Jarvinen, Olli Pitkanen, Zhong-Peng Lv, Krisztian Kordas
Summary: A core-shell composite, Ti3C2Tx@croconaine (poly(1,5-diaminonaphthalene-croconaine), PDAC), for NH3 detection, was prepared by a facile in situ polymerization reaction, which exhibits significantly enhanced sensitivity and detection limit compared to pristine Ti3C2Tx. The improved sensing performance is attributed to the presence of PDAC facilitating the adsorption of NH3 and changing the tunneling conductivity between Ti3C2Tx domains.
NANOSCALE HORIZONS
(2023)
Article
Chemistry, Analytical
Ming Zhang, Ning Sui, Rui Wang, Tong Zhang
Summary: The gas-sensitive performance of Cr2O3-TiO2 core-shell fibers was enhanced by optimizing the thickness of TiO2 shell. The response of the fibers to acetone transitioned from p-type to n-type with increasing TiO2 shell thickness. The formation of Cr2O3-TiO2 heterojunction enabled the gas sensors to have short response and recovery time to the target gas.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Wenda Wang, Zhenting Zhao, Qian Lei, Hongyan Xu, Jie Hu, Lin Chen
Summary: A novel gold nanoparticles functionalized hierarchical layered NiCo2O4 nanosheets/NiCo2O4 nanowires core-shell structure is proposed for hydrazine detection. The as-prepared sensor exhibits high sensitivity, good linear range and low detection limit after optimization of experimental parameters.
MICROCHEMICAL JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Yuan Liu, Cong Zhao, Jingzhou Li, Shixi Zhao, Xiaomin Xu, H. Y. Fu, Cunjiang Yu, Feiyu Kang, Guodan Wei
Summary: The high-performance photodetectors based on environmentally benign CuInS2/ZnS core-shell quantum dots, in combination with organic blend films, achieve efficient energy transfer and charge separation, leading to low dark current and high detectivity. This work demonstrates a feasible strategy to develop highly sensitive photodetectors using heavy-metal-free core-shell quantum dots.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Biochemical Research Methods
Wei Xu, Yu Zhang, Hao Chen, Jinhua Dong, Ranjha Khan, Jianjun Shen, Honglin Liu
Summary: We developed a surface-enhanced Raman scattering (SERS) sensor based on functionalized Au@Ag core-shell nanorods and cascade DNAzyme amplifier for sensitive detection of miRNA-21. The SERS nanoprobes exhibited enhanced plasmonic properties due to the silver shell, resulting in significant enhancement of Raman signals. The proposed SERS sensor demonstrated good linearity in the range of 0.5 fM to 10 nM with a detection limit of 0.5 fM, making it suitable for quantitative and precise detection of miRNA-21 in human serum.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Decai Yang, Yachao Xu, Kai Pan, Chuanxin Yu, Jiaxing Wu, Mingxia Li, Fan Yang, Yang Qu, Wei Zhou
Summary: Surface oxygen vacancy defects of mesoporous CeO2 nanosheets assembled microspheres (D-CeO2) are engineered, resulting in enhanced photocatalytic performance with improved degradation rate.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Physical
Yongqian Cui, Zipeng Xing, Meijun Guo, Yalu Qiu, Bin Fang, Zhenzi Li, Shilin Yang, Wei Zhou
Summary: A hollow core-shell potassium phosphomolybdate (KMoP)@cadmium sulfide (CdS)@bismuth sulfide (Bi2S3) Z-scheme tandem heterojunction with a narrow band gap and excellent photothermal performance was fabricated. This structure showed outstanding photocatalytic performance in H-2 production, Cr-VI reduction, and degradation of tetracycline (TC). The high stability and boosted photocatalytic performance were attributed to the core-shell Z-scheme tandem heterojunction design strategy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
Dengke Zhao, Yuguang Zhu, Qikai Wu, Wei Zhou, Jiacheng Dan, Hao Zhu, Wen Lei, Li-Jun Ma, Ligui Li
Summary: A low-loading of Ir-coated cobalt nanoparticles embedded in nitrogen-doped carbon nanotube/porous carbon sheets was prepared as a trifunctional electrocatalyst for OER, HER, and ORR. The resulting composites showed excellent catalytic activity in both acidic and alkaline electrolytes, with low overpotentials and high half-wave potential. Moreover, it demonstrated outstanding performance as an air cathode for rechargeable Zn-air battery, with high specific capacity, low charge-discharge polarization, and long cycling stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Qikai Wu, Dengke Zhao, Xiaolong Yu, Jinchang Xu, Nan Wang, Wei Zhou, Ligui Li
Summary: Reasonable construction of heterostructure is important and challenging for efficient pH-universal catalysts. In this study, a new method was developed to synthesize Mo3N2@NC NR heterostructure, which exhibited excellent catalytic activity and stability. The results showed that Mo3N2@NC NR achieved high current densities at low overpotentials in alkaline, acidic, and neutral electrolytes, and showed comparable performance to noble metal materials in electrocatalytic water splitting under alkaline conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Jianan Liu, Xuemeng Sun, Baojiang Jiang, Mingyang Liu, Qi Li, Xudong Xiao, Hongli Wang, Mang Zheng, Shien Guo, Jie Wu, Yanhong Zhang, Keying Shi, Wei Zhou
Summary: In this study, ZnFe2O4/UiO-66-NH2 composites were fabricated via an electrostatic self-assembly process for photocatalytic selective oxidation of alcohols. The optimized composite exhibited excellent photocatalytic activity and stability, providing a strategy for optimizing nanoscale catalysts under mild conditions.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Weifeng Kong, Zipeng Xing, Bin Fang, Yongqian Cui, Zhenzi Li, Wei Zhou
Summary: Three-dimensional flower-shaped plasmon Ag/Na-doped defective graphitic carbon nitride/NiFe layered double hydroxides (Ag/NaCNN/NiFe-LDH) Z-scheme heterojunction with enhanced utilization of sunlight and excellent photothermal effect is fabricated, showing promising applications in photocatalytic degradation of organic pollutants and hydrogen generation under visible light.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Yichao Wang, Zipeng Xing, Huanan Zhao, Sijia Song, Meijie Liu, Zhenzi Li, Wei Zhou
Summary: Oxygen-doped MoS2@In2S3/Bi2S3 core-shell dual Z-scheme tandem heterojunctions exhibit excellent photothermal effect and photocatalytic performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Bojing Sun, Jiaqi Bu, Xiaoyu Chen, Dingge Fan, Siwei Li, Zhenzi Li, Wei Zhou, Yunchen Du
Summary: In this study, ultrathin nanosheets were successfully fabricated with in-situ interstitial zinc doping and short-range disordered structure, enabling overall water splitting without cocatalysts under visible light irradiation. The material possesses abundant active sites and adjustable electronic configurations, enhancing the photocatalytic efficiency.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yuguang Zhu, Shunlian Ning, Xiaolong Yu, Xiaojun Niu, Minzhe Chen, Wei Zhou, Dengke Zhao, Zilong Li, Nan Wang, Nanwen Li, Ligui Li
Summary: In this study, a cheap and high-efficiency bifunctional electrocatalyst for ORR and OER was successfully fabricated. The catalyst showed excellent catalytic activities and durability. The synergistic effect between cobalt nanoparticles and Fe-Nx/C substrates enabled fast electron transfer and prevented the oxidation and agglomeration of cobalt nanoparticles, thus improving the electrocatalytic activities.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Fan Yang, Shijie Wang, Zhenzi Li, Yachao Xu, Wutao Yang, Chuanxin Yv, Decai Yang, Ying Xie, Wei Zhou
Summary: A polydopamine/defective ultrathin mesoporous graphitic carbon nitride (PDA/DCN) Z-scheme organic assembly was successfully fabricated through high-temperature surface hydrogenation and ultrasonic freeze-dried strategies. The assembly exhibited high photocatalytic hydrogen evolution and organic contaminant removal rates under visible and near-infrared light irradiation. The enhanced performance can be attributed to the defects of DCN that enhance interactions with PDA, leading to effective charge separation and rapid transfer. Additionally, PDA extends the photoresponse to the near-infrared region and induces photothermal effect, further increasing the reaction rate of the photocatalytic system.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Zhenzi Li, Shijie Wang, Jiaxing Wu, Wei Zhou
Summary: TiO2 nanomaterial photocatalysts have received extensive research interest for energy and environmental applications. The main challenges are the large bandgap and charge-carrier recombination. Recent reports suggest that engineering the defects of TiO2 can enhance photoresponse and promote charge separation efficiency. This review summarizes the synthesis strategies for defective TiO2, especially black TiO2 nanomaterials, and discusses their applications, defect types, characteristics, and photocatalytic mechanism in detail.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Zhenzi Li, Decai Yang, Hongqi Chu, Liping Guo, Tao Chen, Yifan Mu, Xiangyi He, Xueyan Zhong, Baoxia Huang, Shiyu Zhang, Yue Gao, Yuxiu Wei, Shijie Wang, Wei Zhou
Summary: Interface engineering is an efficient strategy to improve photocatalytic performance. In this study, reduced graphene oxide/mesoporous titanium dioxide nanotube heterojunction assemblies (rGO/TiO2) were fabricated via a hydrothermal method. The heterojunction interface formed between rGO and TiO2 nanotubes acts as efficient charge transfer channels, which leads to enhanced photocatalytic performance. The rGO/TiO2 heterojunction assemblies exhibit extended photoresponse to visible light and a significantly higher photocatalytic hydrogen production rate compared to TiO2 nanotubes alone. This enhancement is attributed to effective charge transfer channels, spatial charge separation, and the electron acceptor properties of rGO, as well as the large surface area and sufficient surface active sites provided by the two-dimensional mesoporous nanosheets structure. This heterojunction assembly holds potential applications in energy fields.
Article
Chemistry, Multidisciplinary
Shijie Wang, Dongxue Song, Lijun Liao, Bo Wang, Zhenzi Li, Mingxia Li, Wei Zhou
Summary: Doping engineering of metallic elements is important in photocatalysis, especially in the transition element range, as it increases carrier concentration and absorption in the light region. Mn doping changes the local structure of BiOCl, increasing the specific surface area and mesoporous distribution. The combination of Mn doping and metal Bi reduces the forbidden bandwidth, strengthening the photocatalytic ability. The dual-technology combination of Mn doping and Bi metal has promising applications in environmental remediation.
Editorial Material
Chemistry, Multidisciplinary
Wei Zhou
Article
Chemistry, Physical
Siran Zhang, Wei Zhou, Jianing Mao, Kang An, Ningyan Li, Tian Qin, Liwei Chen, Xi Liu, Bingbao Mei, Zheng Jiang, Zhong-Li Wang, Yusuke Yamauchi, Yuan Liu
Summary: This study demonstrates that the introduction of Ru ions in the LaNiO3 support can result in super anti-sintering performance of Pt nanoparticle catalyst. The experimental and theoretical evidence shows that Ru ions form stable interface bonding with Pt and enhance the Pt-O bonding on LaNiO3, preventing the sintering of Pt particles.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)