SCRIPTA MATERIALIA
·
2019
·
IF 4.539
Jun Guo,Peng Qin,Zheng Ma,Qiong-Lian Yang,Jing Feng,Zhen-Hua Ge
A new approach was developed for enhancing the thermoelectric performance of In 2 O 3 (ZnO) 5 ceramics. Ni coating layer on the surface of In 2 O 3 (ZnO) 5 powders was prepared by chemical plating. The Ni-Coated In 2 O 3 (ZnO) 5 powders was densified to composite bulk with Ni enrichment in the grain boundaries. The composite sample obtained a remarkably enhanced dimensionless thermoelectric figure of merit (ZT) of 0.39 at 973 K, which is 3.6 times higher than that of a pristine In 2 O 3 (ZnO) 5 sample.
研究领域:
材料科学
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凝聚态物理
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功能陶瓷
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热电材料
·
纳米复合材料
✓ 已验证
DOI
高影响因子
Science China-Chemistry
·
2019
·Vol. 63
·期 1
·28-34
·
IF 6.085
Zhao Bohang,Huang Yi,Liu Dali,Yu Yifu,Zhang Bin
The development of a facile strategy to construct stable hierarchal porous heterogeneous photocatalysts remains a great challenge for efficient CO 2 reduction. Additionally, hole-trapping sacrificial agents (e.g., triethanolamine, triethylamine, and methanol) are mostly necessary, which produce useless chemicals, and thus cause costs/environmental concerns. Therefore, utilizing oxidation ability of holes to develop an alternative photooxidation reaction to produce value-added chemicals, especially coupled with CO 2 photoreduction, is highly desirable. Here, an in situ partial phosphating method of In 2 O 3 is reported for synthesizing InP–In 2 O 3 p-n junction. A highly selective photooxidation of tetrahydroisoquinoline (THIQ) into value-added dihydroisoquinoline (DHIQ) is to replace the hole driven oxidation of typical sacrificial agents. Meanwhile, the photoelectrons of InP–In 2 O 3 p-n junction can induce the efficient photoreduction of CO 2 to CO with high selectivity and stability. The evolution rates of DHIQ and CO are 2 and 3.8 times higher than those of the corresponding In 2 O 3 n-type precursor, respectively. In situ irradiated X-ray photoelectron spectroscopy and electron spin resonance are utilized to confirm that the direct Z-scheme mechanism of InP–In 2 O 3 p-n junction accelerate the efficient separation of photocarriers.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Songbo Wang,Yidan Wang,Jia Li,Shuang Guo,Chengzhen Meng,Lun Pan,Ji-Jun Zou,Yawei Shi,Lei Zhang,Zhen Yin,Na Tang
In order to address the current energy and environmental challenges, photoelectrochemical (PEC) water splitting has been widely studied, and the key point about the efficient PEC process is how to develop highly active photoanode catalysts. In this article, we report a two-step hydrothermal and electrodeposition approach to prepare a cobalt (oxy)hydroxide (CoOOH)-modified Ti-Fe2O3-In2O3 electrode by synergy of electron modulation and a heterojunction structure for promoting PEC water splitting. Under a bias of 1.23 V vs RHE, the optimized Ti-Fe2O3-In2O3/CoOOH photoanode demonstrated remarkable photocurrent density and hydrogen evolution rate as high as 1.33 mA cm–2 and 22.8 μmol cm–2 h–1, which was 5.11-fold and 5.14-fold that of bare α-Fe2O3, respectively. Characterization results indicate that Ti-doping will alter the electronic structure and improve the charge carrier density, whereas the construction of a heterojunction can realize the spatial separation of charge carriers. Meanwhile, the outer CoOOH ultrathin layer can provide a large amount of oxygen evolution reaction sites and promote the surface reaction. This work suggests that the PEC performance of Fe2O3-based photoanodes can be improved effectively by the synergy of electronic modulation and heterojunction construction.
研究领域:
能源与环境科学
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材料科学
·
光化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Liwei Wang,Liping Gao,Hongjie Liu,Qian Zhang,Hao Fu,Zhelin Liu
In order to quickly and accurately detect and then evaluate the freshness of fish, trimethylamine is used as a landmark gas for detection. In this study, an alternative trimethylamine chemosensor based on Bi 2 O 3 -In 2 O 3 nanofibers (NFs) was synthesized successfully through the electrospinning method. The structure, morphology and chemical states of Bi 2 O 3 -In 2 O 3 NFs were characterized. The results of gas sensing tests indicated that after doping In 2 O 3 with 3 % Bi 2 O 3 , the sensor displays better sensitivity to trimethylamine (48.6–100 ppm), which was 2.9 times higher than pure In 2 O 3 (NTs) gas sensor (16.4) at the optimal operating temperature of 250 °C. Under low concentrations of trimethylamine (0.5 ppm), the 3 % Bi 2 O 3 -In 2 O 3 NFs sensor still has a specific sensitivity (1.3). The increased sensitivity of 3 % Bi 2 O 3 -In 2 O 3 NFs sensor is attributed to the increase of oxygen vacancy, which can be confirmed by XPS and UV- vis methods. The sensor sensitivity decreased as the relative humidity increased, but the response remained at approximately 10 even under a high humidity environment of 90 %. The excellent performances towards trimethylamine indicate that 3 % Bi 2 O 3 -In 2 O 3 NFs are prospective candidates for trimethylamine gas sensor fabrication.
研究领域:
材料科学
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食品科学
·
化学传感器
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2018
·
IF 3.794
Dan Liu,Peng Shi,Wei Ren,Yantao Liu,Ming Liu,Yijun Zhang,Qijing Lin,Bian Tian,Zhuangde Jiang,Zuo-Guang Ye
La 1-x Sr x CrO 3 -In 2 O 3 thick film thermocouples were fabricated by screen-printing method for high temperature sensing and the effects of Sr 2+ content were investigated systematically. All La 1-x Sr x CrO 3 thick films showed well crystallization with orthorhombic unit cell. Their average particle sizes showed the tendency of first increase then decrease gradually with the increase of Sr 2+ content, and the maximum of average particle size was 1.76 μm. At the same time, the conductivities were improved with the increase of Sr 2+ content. The thermoelectric properties of La 1-x Sr x CrO 3 depended on the Sr 2+ content and the average Seebeck coefficients had an exponential decay tendency with the increase of Sr 2+ content. For La 1-x Sr x CrO 3 (x = 0.1–0.4)-In 2 O 3 thermocouples, excellent repeatability and stability were observed through multi-cycles and long-time usage testing at high temperature. The La 0.7 Sr 0.3 CrO 3 -In 2 O 3 thick film thermocouple with excellent thermal stability (drift rate: 0.81 °C/h) and reliability makes it become a promising candidate high sensitivity thermal sensor .
研究领域:
材料科学
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传感器技术
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2017
·Vol. 4
·期 9
·095022
·
IF 1.068
Haojie Duan,Lei Yan,Yue He,Haiying Li,Li Liu,Yali Cheng,Liting Du
In2O3 nanofibers (NFs) and toruloid nanotubes (TNTs) were fabricated by conventional electrospinning process and their sensing properties toward H2S gas were researched. Thermogravimetric analysis, x-ray diffractometry, energy dispersive spectroscopy and scanning electron microscopy were carefully used to investigate the structures, chemical compositions and morphologies of these samples. The novel structure (TNTs) first used nonpolar mineral oil as the control agent of morphology, and the principle of forming toruloid nanotubes was studied. Phase separation plays a critical role in the process of forming toruloid nanotubes structure automatically. The new application of phase separation provided a simple and effective approach for controlling structure. The research indicated that thin-walled toruloid nanotubes showed higher responses toward H2S compared to nanofibers or thick-walled toruloid nanotubes. Additionally, their excellent selectivity can be attributed to the special gas-sensing mechanism of In2O3 for H2S.
研究领域:
材料科学
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 6
·067503
·
IF 3.9
Dongxing Zhang,Jie Zou,Xuebin Li,Fuan Li,Chunyue Bi,Zhenyan Wang,Yuanjie Su,Jiawen Jian
In2O3 material with special morphology was synthesized using the hydrothermal method and was used as the sensing electrode for a mixed potential ammonia sensor based on yttria-stabilized zirconia electrolyte. The In2O3 sensing electrode (In2O3-SE) was sintered at different temperatures and was characterized by X-ray diffraction (XRD) and field-emission scanning electron microscopy (SEM). The influence of the In2O3-SE sintering temperature on the performance of the sensor was investigated by testing the NH3 response at 500 °C. The results showed that the sensor attached with In2O3-SE sintered at 900 °C exhibited the largest response value (–102.1 mV for 250 ppm NH3) at 500 °C. Moreover, the response value of the sensor varied almost linearly with the logarithm of NH3 concentration in the range of 20–400 ppm, which was consistent with the mixed potential mechanism, as verified by polarization and electrochemical impedance spectroscopy (EIS) tests. Furthermore, the sensor also displayed high sensitivity to NH3, but weak cross-sensitivities to various interfering gases (CHs, NOx, CO, CO2 and H2O) at 500 °C. It exhibited slight signal drifts both in the continuous 26-h test and in the interval test over a period of one month, which showed that the sensor attached with 900 °C-sintered In2O3-SE has acceptable short- and long-term stability.
研究领域:
材料科学
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传感器技术
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电化学
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2020
·Vol. 22
·期 15
·5059-5066
·
IF 9.48
Kaihang Sun,Ning Rui,Zhitao Zhang,Zeyu Sun,Qingfeng Ge,Chang-Jun Liu
Supported Pt catalysts have been extensively investigated for CO2 hydrogenation with methane and CO as the principal products. In this work, a Pt/In2O3 catalyst prepared with decomposition precipitation was tested for CO2 hydrogenation to methanol. The Pt/In2O3 catalyst exhibited a highly improved activity towards CO2 hydrogenation, with methanol selectivity of ca. 100% at temperatures below 225 °C, 74% at 275 °C and 54% at 300 °C, respectively, compared to the pure In2O3 catalyst. This represents the highest methanol selectivity reported on Pt catalysts for CO2 hydrogenation. The stability of the Pt/In2O3 catalyst at elevated temperatures has also been higher than that of the pure In2O3 catalyst, indicated by the methanol formation rate decreasing only to 95% of the initial rate after 5 h in the reaction stream and remaining largely constant thereafter. In contrast, the pure In2O3 catalyst loses 20% of the initial methanol formation rate after 9 h in the reaction stream. The characterization of the catalysts confirms that the Pt nanoparticles are well dispersed on In2O3 with a particle size below 3 nm. The strong metal–support interaction (SMSI) between Pt and In2O3 improves the stability of the catalyst and prevents the over-reduction of In2O3. The synergy between the supported Pt nanoparticles and In2O3 balances the hydrogen activation and the density of the surface oxygen vacancies in In2O3, resulting in the high activity for CO2 hydrogenation and enhanced stability of the Pt/In2O3 catalyst.
研究领域:
催化化学
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能源化学
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材料科学
✓ 已验证
DOI
高影响因子
Microsystems & Nanoengineering
·
2024
·Vol. 10
·期 1
·1-12
·
IF 7.3
Dong Helei,Lu Meimei,Wang Weifeng,Tan Qiulin
Hypersonic vehicles and aircraft engine blades face complex and harsh environments such as high heat flow density and high temperature, and they are generally narrow curved spaces, making it impossible to actually install them for testing. Thin-film heat flux sensors (HFSs) have the advantages of small size, fast response, and in-situ fabrication, but they are prone to reach thermal equilibrium and thus fail during testing. In our manuscript, an ITO–In 2 O 3 thick film heat flux sensor (HFS) is designed, and a high-temperature heat flux test system is built to simulate the working condition of a blade subjected to heat flow impact. The simulation and test results show that the test performance of the thick-film HFS is improved by optimizing the structure and parameters. Under the condition of no water cooling, the designed HFS can realize short-time heat flux monitoring at 1450 °C and long-term stable monitoring at 1300 °C and below. With a maximum output thermopotential of 17.8 mV and an average test sensitivity of 0.035 mV/(kW/m 2 ), the designed HFS has superior high-temperature resistance that cannot be achieved by other existing thin (thick) film HFSs. Therefore, the designed HFS has great potential for application in harsh environments such as aerospace, weaponry, and industrial metallurgy.
研究领域:
航空航天工程
·
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Alamgir,Raza Ullah,Khalid Talha,Hongye Yang,Nouraiz Mushtaq,Abrar Ahmad,Linkun Fan,Lan Li,Guixia Zhao,Xusheng Wang,Junkuo Gao
It is challenging to engineer a photocatalyst that can degrade antibiotics efficiently. We have successfully developed a series of photocatalysts by annealing In-MOF (BUT-205) with TiO 2 , namely (a) In 2 O 3 /TiO 2 -I, (b) In 2 O 3 /TiO 2 -II, and (c) In 2 O 3 /TiO 2 -III. These catalysts, particularly In 2 O 3 /TiO 2 -III, exhibited superior efficiency in degrading tetracycline (TC) under visible light. The enhanced photocatalytic performance of In 2 O 3 /TiO 2 -III can be attributed to the formed S-scheme heterojunction, which promoting the separation of electron-hole pairs. The S-scheme heterojunction was confirmed by XPS , in-situ XPS, UV–vis diffuse reflectance spectroscopy, and Mott-Schottky plot, etc. Compared to pure TiO 2 and In 2 O 3 , the In 2 O 3 /TiO 2 -III demonstrated an 18-fold and 3-fold higher degradation rate constant (k). Various factors affecting the degradation of TC were investigated, including pollutant concentration, catalyst type, solution pH, catalyst dosage, inorganic anions , inorganic cations , and radical species. Photoluminescence (PL) and transient photocurrent density evaluate the separation rate of electron-hole pairs, and EPR experiments (active species trapping) studies confirmed •O 2 − and h + as the primary entities in TC photodegradation by In 2 O 3 /TiO 2 -III. HPLC/MS analysis revealed the photocatalytic degradation pathway. The MOF-derived photocatalysts efficiency in TC photoreduction results from the formed S-scheme heterojunction, making it a promising candidate for environmental remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2024
·
IF 4.3
Yuan Liu,Wanping Liu,Xuelei Li,Jun Liu,Xiaoyan Liu,Aruuhan Bayaguud
Indium oxide (In 2 O 3 ) anode material exhibits significant potential in lithium-ion batteries due to its low operating voltage and high theoretical specific capacity. However, its poor conductivity and substantial volume changes during Li + insertion and extraction result in subpar rate performance and cycling stability. To address these issues, a binderless carbon-coated In 2 O 3 anode is constructed, utilizing foam nickel as the current collector and liquid nitrile rubber (LNBR-820H) with high adhesion as the carbon source. This approach enhances conductivity and mitigates volume expansion problems. The synergistic effects of carbon coating and binderless construction yield the In 2 O 3 @C10%-Ni-BL anode with an initial discharge specific capacity of 1052.43 mAh g −1 , a discharge specific capacity of 513.60 mAh g −1 after 200 cycles, and improved rate performance. These findings demonstrate the viability of this synergistic strategy, which not only circumvents the negative impact of binders on conductivity and enhances Li + insertion/extraction efficiency but also increases the proportion of active materials, thereby improving both rate performance and cycling stability of the anode.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Bing-Rong Wang,Li-Ying Liu,Gen-Cai Guo,Yue-Jie Bai,Jin-Chun Tu,Ru-Zhi Wang
Cocatalysts have been extensively employed to improve gas sensing performance in gas detection. However, the interface effect of the heterojunction on gas sensing has rarely been addressed. This study investigated the interface effect of constructive hierarchical In 2 S 3 /In 2 O 3 nanoflowers on NO 2 gas sensitivity using a rapid and facile microwave-assisted hydrothermal method. The structure was then modulated from In 2 S 3 , to In 2 S 3 /In 2 O 3 heterostructures, and finally In 2 O 3 alone by increasing the calcination time. In 2 S 3 /In 2 O 3 heterostructures with an appropriate interface were found to significantly promote NO 2 gas sensitivity with a high gas-sensing selectivity compared with pure In 2 S 3 and In 2 O 3 . An interface enhancement model has also been developed. The strong interfacial coupling effect was key to high gas sensitivity, which likely originated from hole–electron pair separation through tuning of the interfacial electronic structure of In 2 S 3 /In 2 O 3 nanoflowers using different calcination times. This resulted in improved charge separation efficiency and carrier collection efficiency of electrons from In 2 S 3 to In 2 O 3 , and increased active sites. This boosted gas diffusion and adsorption, accelerated surface chemical reactions, and expedited charge transport and kinetic processes. This work provides a new approach for designing high-performance sensor using the interface effect of heterostructure nanomaterials.
研究领域:
材料科学
·
传感器技术
·
环境监测
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）