APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Shao-Kang Ju,Li-Juan Yue,Jian-Yong Yuan,Fei-Long Gong,Ke-Feng Xie,Xuan-Yu Yang,Shao-Ming Fang,Yong-Hui Zhang
Defect sites in heterostructures play a vital role in optimizing interfacial charge separation efficiency and carrier migration behavior, which enhance surface reaction dynamics. However, the effect of defect sites on modulation of electronic structure and oxygen activation is still ambiguous. Herein, we successfully construct in-plane ZnIn 2 S 4 /In 2 O 3 heterostructures by partial in-situ oxidation strategy and the surface properties can be precisely tuned by treating at individual temperatures. Notably, the in-plane ZnIn 2 S 4 /In 2 O 3 heterostructure which is treated in air at 425 °C exhibits outstanding sensing performance towards acetoin (R a /R g = 248.6 for 50 ppm acetoin at 180 °C), a biomarker of Listeria monocytogenes, with rapid response and recovery dynamic (18/183 s), along with excellent reliability and sensing stability. Detailed characterization and DFT calculation indicate that in-plane heterostructures possess numerous grain boundaries, thereby modulating the p-orbitals electronic structure of oxygen atom and promoting the formation of reactive oxygen species (O − (ad)). Moreover, the built-in electric field further also facilitates the electron transfer, further contributing to the enhanced sensing performance for 3-hydroxy-2-butanone.
研究领域:
材料科学
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纳米技术
·
传感器
·
表面化学
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电子器件
·
固体物理
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分析化学
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生物传感器
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DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Kunxiang Deng,Yasen Wang,Yilin Wang,Zhifang Liu,Xinyi Li,Yixi Xie,Haoran Guo,Pengcheng Zhao,Junjie Fei
Chlorpyrifos (CPF) is widely utilized in agricultural practices, and its residue in food raise significant concerns food safety. However, current detection methods often suffer from complex operation procedures and unstable signal responses. Therefore, there is an urgent need to develop a reliable sensor for detecting CPF residue in food samples. In this work, a Z-scheme heterojunction was formed using hollow In 2 O 3 (H-In 2 O 3 ) and Bi 2 WO 6 nanosheets. The staggered band structure of the H-In 2 O 3 /Bi 2 WO 6 heterojunction facilitates carrier separation and transfer, thereby enhancing the sensor's response. In the presence of CPF, it reacts with · OH radicals generated by the heterojunction, further amplifying the signal. The sensor exhibits a linear response in the range of 5–700 nM with a limit of detection (LOD) of 0.72 nM. In addition, this photoelectrochemical sensor demonstrates satisfactory stability, anti-interference, selectivity and reproducibility, showing great potential for CPF analysis in real samples.
研究领域:
分析化学
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环境监测
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食品安全
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材料科学
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光电子学
·
农药残留检测
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产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Huichang Xu,Yu Wang,Xiaoli Dong,Nan Zheng,Hongchao Ma,Xiufang Zhang
The synthesis of a novel In 2 O 3 /In 2 S 3 microsphere heterostructures is conducted through a well-designed two-step hydrothermal method. These composites are first applied for efficient fixation of N 2 to NH 3 under mild conditions without any organic scavengers and precious-metal cocatalysts. Here the In 2 S 3 flakes are in situ generated and uniformly assembled on In 2 O 3 microsphere. The phase structures, morphologies and oxygen vacancies of the samples are systematically characterized by X-ray powder diffraction (XRD), field-emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse-reflectance spectroscopy (DRS), and photoluminescence spectroscopy (PL), Raman, electron spin resonance (ESR) spectroscopy and photoelectrochemistry. Meanwhile, the investigation of photocatalytic performance can confirm that the nitrogen fixation rate of In 2 O 3 /In 2 S 3 (III) heterostructure is 40.04 μmol g −1 h −1 , which is about 4.7 and 6.0 times higher than that of pure In 2 O 3 and In 2 S 3 , respectively.
研究领域:
材料科学
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催化
·
化学工程
·
光化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Kok Bing Tan,Pan Tian,Xinxin Zhang,Jian Tian,Guowu Zhan,Jiale Huang,Qingbiao Li
The present study developed bifunctional catalyst for CO 2 hydrogenation into dimethyl ether (DME), whereby it consists of Pd/In 2 O 3 for CO 2 hydrogenation into methanol, and H-ZSM-5 for methanol dehydration into DME. The catalyst development was focused on the synthesis of Pd/In 2 O 3 via a green and low-cost synthesis method of carbonized alginate templating. Thus, microspherical-confined nano-Pd/In 2 O 3 was formed, whereby the localized nucleation growth was coordinated by the chemically entrapped In 3+ via ionic bond in the well-distributed alginate structure. It was found that hydrothermal temperature plays a key role in the development of this catalyst structure. The optimum hydrothermal temperature is 160 °C, as it is able to produce the highest amount of methanol. This catalyst was further integrated with H-ZSM-5 via different integration manners. It was found that mortar mixed method produces the highest amount of DME, as the close proximity causes stronger ion-exchange mechanism between the catalyst components, which facilitates higher oxygen vacancy density in the bifunctional catalyst. Under the optimum Pd/In 2 O 3 : H-ZSM-5 (PdIn-160–12: H-ZSM-5) mass ratio of 4:1, the highest STY DME of 79.7 g DME kg cat -1 h −1 with CO 2 conversion of 9% and DME selectivity of 44.1% can be achieved. In addition, the STY DME can be maintained even in 60 h on stream, demonstrating the excellent stability and performance of microspherical-confined nano-Pd/In 2 O 3 /H-ZSM-5 bifunctional catalyst synthesized via carbonized alginate templating strategy.
研究领域:
催化
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化学工程
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材料科学
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环境化学
·
能源科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Xiaohang Yang,Weilun Yu,Wensi Wang,Da Wang,Qiyao Wang,Xuyang Huo
A strategy of tuning the size of In 2 O 3 nanocube was employed to change the surface property of g–C 3 N 4 –In 2 O 3 heterojunction to boost its photocatalytic H 2 production. In the type II g–C 3 N 4 –In 2 O 3 heterojunction, the change on the size of In 2 O 3 nanocube (30, 60 and 120 nm) could regulate visible light utilization ability and photoelectric conversion efficiency of photogenerated charge carriers. The directional transfer of charge carriers caused the accumulation of photoexcited electron in plasmonic In 2 O 3 and localized electric field enhancement. The intensity and spatial distribution of localized electric field could be tuned by the adjustable size of In 2 O 3 nanocube. Therefore, the obtained g–C 3 N 4 –In 2 O 3 heterojunction with an optimal size of In 2 O 3 nanocube (60 nm) exhibited supreme photocatalytic H 2 evolution rate of 3.1 mmol h −1 g −1 with a high apparent quantum efficiency of 5.27%, which was 7.5 times higher than that of bare g-C 3 N 4 nanosheet (0.4 mmol h −1 g −1 ).
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Weijie Zhou,Yuzi Zhang,Chaoyue Li,Xiangyang He,Zhichao Miao,Jinglin Mu,Manfen Liang,Jin Zhou
In 2 O 3 supported on ZrO 2 and CeO 2 was developed for CO 2 -to-formate electroreduction. • Distinct support effects of ZrO 2 and CeO 2 on In 2 O 3 active site were identified. • CeO 2 tunes electronic structure of In species and boosts the catalytic performance. • In 2 O 3 /CeO 2 delivers higher current density and Faradaic efficiency than In 2 O 3 /ZrO 2 . • The In 2 O 3 /CeO 2 catalyst maintains stable operation for 50 h at 100 mA cm −2 . Developing efficient electrocatalysts for the selective CO 2 electroreduction to formate is important for achieving carbon neutrality. Herein, In 2 O 3 /ZrO 2 and In 2 O 3 /CeO 2 catalysts were fabricated by combining MOF-derived oxide supports with incipient wetness impregnation and subsequent thermal treatment. Comparative studies reveal that CeO 2 affords a more favorable catalyst-support interface than the ZrO 2 support, resulting in enhanced activity and selectivity for formate production. In a flow cell, the optimized In 2 O 3 /CeO 2 catalyst achieves a formate Faradaic efficiency of 90.0% at −1.37 V vs. RHE with a current density of 177 mA cm −2 , significantly outperforming the In 2 O 3 /ZrO 2 catalyst. Combined structural characterization and kinetic analysis indicate that the CeO 2 support improves the electronic structure of In species, thereby facilitating the adsorption and conversion of key intermediates and thereby improving the intrinsic reactivity for formate formation. Moreover, the In 2 O 3 /CeO 2 catalyst maintains stable operation for 50 h at 100 mA cm −2 . This work highlights the critical role of support effects in regulating In-based active sites and provides insights into the rational design of efficient catalysts for the selective CO 2 -to-formate electroreduction. A series of In 2 O 3 /ZrO 2 and In 2 O 3 /CeO 2 catalysts were prepared for ECR to formate. The CeO 2 affords a more favorable catalyst-support interface than the ZrO 2 support, resulting in enhanced activity and selectivity for formate production. Download: Download high-res image (117KB) Download: Download full-size image
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DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 16
·2783
·
IF 5.719
Shasha Li,Xinan Zhang,Penglin Zhang,Guoxiang Song,Li Yuan
The use of the semiconductor heterojunction channel layer has been explored as a method for improving the performance of metal oxide thin-film transistors (TFTs). The excellent electrical performance and stability of heterojunction TFTs is easy for vacuum-based techniques, but difficult for the solution process. Here, we fabricated In2O3/In2O3:Gd (In2O3/InGdO) heterojunction TFTs using a solution process and compared the electrical properties with single-layer In2O3TFTs and In2O3:Gd (InGdO) TFTs. The In2O3/InGdO TFT consisted of a highly conductive In2O3film as the primary transmission layer and a subconductive InGdO film as the buffer layer, and exhibited excellent electrical performance. Furthermore, by altering the Gd dopant concentration, we obtained an optimal In2O3/InGdO TFT with a higher saturation mobility (µ) of 4.34 cm2V−1s−1, a near-zero threshold voltage (Vth), a small off-state current (Ioff) of1.24×10−9A, a large on/off current ratio (Ion/Ioff) of3.18×105, a small subthreshold swing (SS), and an appropriate positive bias stability (PBS). Finally, an aging test was performed after three months, indicating that In2O3/InGdO TFTs enable long-term air stability while retaining a high-mobility optimal switching property. This study suggests that the role of a high-performance In2O3/InGdO heterojunction channel layer fabricated by the solution process in the TFT is underlined, which further explores a broad pathway for the development of high-performance, low-cost, and large-area oxide electronics.Keywords:solution process;TFTs;doping;heterojunction channel layer;mobility;stability
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DOI
PubMed
高影响因子
IEEE ELECTRON DEVICE LETTERS
·
2023
·Vol. 44
·期 8
·1364-1367
·
IF 4.9
Chuanyu Fu,Hangyuan Cui,Shuo Ke,Yixin Zhu,Xiangjing Wang,Yang Yang,Changjin Wan,Qing Wan
In this letter, we propose neuromorphic transistors employing indium oxide (In2O3) nanofibers as the channel layers. Basic synaptic function, such as short-term memory can be emulated by one nanofiber neuromorphic transistor. Nonlinear synaptic function and short-term memory characteristic of such neuromorphic transistors are favorable for reservoir computing (RC) system with high energy-efficiency. Ultra-low energy consumption (15 pJ per reservoir state) and ultra-high accuracy (100%) of speech digital recognition are realized based on such nanofiber neuromorphic transistors, proving a great potential of the RC system for intelligent processing tasks.
研究领域:
神经形态计算
·
纳米电子学
·
人工智能
·
储层计算
·
低功耗电子
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DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Jing Cao,Zixuan Zhang,Shuangming Wang,Zhiying Sun,Jiahao Li,Yao Wang,Xiaoxue Xu,Zhixu Ye,Haiming Zhang
The performance of semiconductor sensors is determined by reaction kinetics, conductivity, and electron mobility, which are undoubtedly closely related to the electron motion behavior. Therefore, the effective regulation of electronic states is crucial for improving gas sensing properties. Previous methods of enhancing the gas-sensing performance have induced complex material modifications, and the extent of performance improvement is usually very limited. Further optimization of the gas sensing performance requires continuous efforts to advance new technologies. Toward this issue, a novel magnetic field-induced strategy is adopted to boost the carrier transfer efficiency of nonferromagnetic semiconductors. The gas sensing investigation results manifest that the applied magnetic field can effectively enhance the sensitivity and reduce the baseline resistance. The In2O3 NC-2 (In2O3 nanocubes) with an applied magnetic field have a greatly enhanced response of 161.4 toward 100 ppm formaldehyde, which is 2.5 times higher than that without magnetic field. The enhanced gas sensing properties can be mainly attributed to magnetization of reactive materials, which makes the orientation of electronic magnetic moments consistent, thus greatly contributing to reactivity. This work introduces a practical approach to effectively improve gas sensing performance without further morphology optimization, noble metal catalysis, structural modification, and material cladding. The results of this study provide new insights for designing novel gas sensors to improve the gas sensing performance.
研究领域:
材料科学
·
传感器技术
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Longfei Song,Kunpeng Dou,Rongrong Wang,Ping Leng,Linqu Luo,Yan Xi,Chao-Cheng Kaun,Ning Han,Fengyun Wang,Yunfa Chen
In recent years, it is urgent and challenging to fabricate highly sensitive and selective gas sensors for breath analyses. In this work, Sr-doped cubic In2O3/rhombohedral In2O3 homojunction nanowires (NWs) are synthesized by one-step electrospun technology. The Sr doping alters the cubic phase of pure In2O3 into the rhombohedral phase, which is verified by the high-resolution transmittance electron microscopy, X-ray diffraction, and Raman spectroscopy, and is attributable to the low cohesive energy as calculated by the density functional theory (DFT). As a proof-of-concept of fatty liver biomarker sensing, ethanol sensors are fabricated using the electrospun In2O3 NWs. The results show that 8 wt % Sr-doped In2O3 shows the highest ethanol sensing performance with a high response of 21–1 ppm, a high selectivity over other interfering gases such as methanol, acetone, formaldehyde, toluene, xylene, and benzene, a high stability measured in 6 weeks, and also a high resistance to high humidity of 80%. The outstanding ethanol sensing performance is attributable to the enhanced ethanol adsorption by Sr doping as calculated by DFT, the stable rhombohedral phase and the preferred (104) facet exposure, and the formed homojunctions favoring the electron transfer. All these results show the effective structural modification of In2O3 by Sr doping, and also the great potency of the homojunction Sr-doped In2O3 NWs for highly sensitive, selective, and stable breath ethanol sensing.
研究领域:
材料科学
·
纳米技术
·
气体传感
·
密度泛函理论（DFT）
·
化学传感器
·
环境监测
·
生物医学诊断
✓ 已验证
DOI
高影响因子
Sensors and Actuators Reports
·
2022
·
IF 0
Shu Yan,Shu-Zhe Zhang,Wan-Feng Xie,Ling-Yun Gai,Hui-Min Yuan,Ding Zhang,He Zhang,Xuhai Liu,Woochul Yang,Zong-Tao Chi
By combining hydrothermal and calcination processes, In 2 O 3 /ZnSnO 3 cubic crystallite composites have been successfully synthesized. The crystal structure and morphology of the as-synthesized In 2 O 3 /ZnSnO 3 have been characterized employing X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and X-Ray photoelectron spectroscopy (XPS). In terms of better gas response, fast response, repeatability, and a lower operating temperature, the In 2 O 3 /ZnSnO 3 cubic crystallites displayed selective sensing performance towards ethanol, specifically, the response is 14.9, and response/recovery times are 45 s and 24 s, respectively, to 100 ppm ethanol at 250 °C. This research reveals that the synthetic In 2 O 3 /ZnSnO 3 cubic crystallite composites exhibit significant ethanol sensing properties due to the synergetic effect between In 2 O 3 and ZnSnO 3 , oxygen vacancies, and high specific surface area, making them a potential material for constructing high-performance ethanol sensors.
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DOI
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xin Song,Mingyi Li,Jiaqi Xiong,Fangjun Shao,Zhongzhe Wei,Wenjuan Fang,Jianguo Wang
The carboxylation of alkynes with CO 2 is a pivotal reaction in organic synthesis. However, the generally poor adsorption and activation of CO 2 in heterogeneous catalytic systems have become a bottleneck problem restricting the efficiency of carboxylation reactions. In this study, we proposed a strategy for modifying heterogeneous catalysts with ionic liquid. By utilizing amino acid ionic liquids to modify the Pd/In 2 O 3 catalyst, the electronic structure of palladium (Pd) nanoparticles is optimized, and the adsorption and activation of CO 2 on the catalyst is enhanced. Additionally, the h-In 2 O 3 support not only regulates the electronic structure of Pd nanoparticles but also provides abundant oxygen vacancies, which facilitates the adsorption of CO 2 in the system. Due to the synergistic catalytic effects of the amino acid ionic liquid and the oxygen vacancies in the h-In 2 O 3 support, the Pd/h-In 2 O 3 -BmimPro catalyst demonstrates a remarkable phenylpropiolic acid yield of 93 % under mild conditions (50 °C, 0.5 MPa). This study provides valuable insights into the application of ionic liquid-modified catalysts in CO 2 conversion technologies.
研究领域:
催化化学
·
有机合成
·
二氧化碳利用
·
材料化学
·
绿色化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）