SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Xuping Li,Yanwei Li,Xingtang Xu,Xiaohua Wang,Guang Sun,Bo Zhang,Yan Wang,Jianliang Cao
Metal oxide semiconductor (MOS)-based hydrogen (H 2 ) sensor that can work at room or near room temperature has attracted an increasing concern owing to its potential application in hydrogen storage and utilization. Herein, a co-sensitization strategy by La doping and Pd decoration is proposed to realize the detection of H 2 at near room temperature (50 °C) on In 2 O 3 porous nanotubes (PNTs). The In 2 O 3 PNTs were prepared via a solvothermal method and then sequentially doped with La 3+ and decorated with Pd nanoparticles via an immersion, freeze-drying and calcination route and a chemical reduction method, respectively. The results of gas-sensing measurements indicated that after a compositional evolution from In 2 O 3 to La-doped In 2 O 3 (La-In 2 O 3 ) and Pd-decorated La-In 2 O 3 (Pd/La-In 2 O 3 ), the fabricated H 2 sensor showed a higher sensitivity at lower operating temperature. At a near room temperature of 50 °C, the response of the best Pd/La-In 2 O 3 sensor to 50 ppm H 2 was as high as 8.34, increasing about 4.85, 1.20 and 1.15 folds compared to the In 2 O 3 (1.72 at 160 °C), La-In 2 O 3 (6.97 at 150 °C) and Pd/In 2 O 3 (7.24 at 80 °C) sensors, respectively. The sensitization effects and mechanism of La dopant and Pd modifier as well as their synergistic effects were discussed in detail.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
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2015
·
IF 2.719
Wenyan Liu,Yu Zhang,Jia Zhao,Yi Feng,Dan Wang,Tieqiang Zhang,Wenzhu Gao,Hairong Chu,Jingzhi Yin,Yiding Wang,Jun Zhao,William W. Yu
The enhanced photoluminescence (PL) for In-rich copper indium sulfide quantum dots (CIS QDs) was observed. The conduction electron-Cu vacancy recombination and the donor–acceptor pair (DAP) defect recombination were considered to exist in CIS QDs at the same time. The temperature-dependent PL study showed that the emission of these QDs might be mainly originated from the recombination between electrons in the quantized conduction band and holes in the copper vacancy acceptor when x was 0.500 (Cu x In 1− x S). However, the temperature coefficient of PL peak position decreased when x was 0.237. That meant the DAP recombination increased in the In-rich CIS QDs.
研究领域:
材料科学
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光学
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产品关联
DOI
高影响因子
CATALYSIS TODAY
·
2022
·
IF 6.562
Lidan Deng,Qiao Chen,Xingmao Jiang,Xiaowei Liu,Zheng Wang
Propane dehydrogenation is a promising way to produce propylene . Catalysts with high propane conversion, selectivity to propylene , and stability are vital to this technology. In this work, we determined that the catalytic performance of Pt/SBA-15 can be significantly enhanced by introducing an appropriate amount of indium . A too low ratio of In/Pt (1/8) or too high of a ratio (2/1) is detrimental to the activity of the catalyst. When the nominal ratio of Pt to In is 1/1, the initial propane conversion and selectivity towards propylene over 1Pt1In/SBA-15 are highest among all catalysts tested at 57.06 % and 99.04 %, respectively. The conversion rate decreased to 39.63 % after 28 h of reaction, but selectivity was retained at greater than 99 %. Very little coke was deposited on the used 1Pt1In/SBA-15 catalyst. With catalyst characterization, it was proposed that Pt 1 In 1 alloy nanoparticles with surface-enriched In 2 O 3 were responsible for the selective dehydrogenation of propane.
研究领域:
催化化学
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材料科学
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产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2023
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IF 11.1
Jianchun Qin,Shunyan Ning,Jianing Xu,Jishu Zeng,Zheyu He,Liang Luo,Fengtao Hu,Yimin Li,Toyohisa Fujita,Yuezhou Wei
The treatment of hazardous LCD is a complicated coupled process, which contains a large number of impurity metals, especially Fe(III), increased the difficulty of In(III) recovery. Moreover, the defects of the traditional extraction process, such as extractant ageing quickly, difficulty to back-extraction, and easy emulsification , seriously restricted the efficient and environmentally friendly recovery of In . Therefore, a novel adsorbent (D2EHPA/SiO 2 –P) was synthesized for the separation and recovery of In(III), and a new recovery process was developed to eliminate the defects of traditional In recovery process in this study. D2EHPA/SiO 2 –P exhibited excellent adsorption selectivity and kinetics for In(III), and the adsorption equilibrium was obtained within 3 min. The adsorption process of In(III) conformed to the pseudo-second-order and Langmuir model. In(III) on D2EHPA/SiO 2 –P was desorbed by 3 M HCl solution, and D2EHPA/SiO 2 –P still had high adsorption and desorption efficiency for In(III) after 5 times of adsorption-desorption cycle experiments. The adsorption mechanism study found that the O–H bond on the D2EHPA participated in the substitution reaction and bonded with In(III) as the adsorption site during the adsorption process. The bond order value of In–O bond was the lowest in the D2EHPA adsorbed In(III) during the desorption process, indicating that In–O bond was easy to break and desorption form D2EHPA. Finally, in the 0.1M H 2 SO 4 system, a new process of using H 2 C 2 O 4 to reduce Fe(III) in advance, and then using D2EHPA/SiO 2 –P to adsorb In(III) was designed to recover In(III) without producing toxic gas, which realized the separation of In(III) and Fe(III). Our findings showed that the developed recovery process was both efficient and environmentally friendly, which had the potential for industrial application of In recovery from hazardous LCD.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Molecular Catalysis
·
2023
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IF 4.6
Hele Liu,Pengfei Tan,Lu Yang,Mingyuan Zhang,Jiaoyang Chen,Ruifeng Ren,Huanhuan Zhai,Tiangui Qi,Jun Pan
Improving photocatalytic activity is crucial for promoting photocatalytic hydrogen production. Element doping is a feasible strategy to accelerate carrier separation and migration rate. Herein, a simple one-pot hydrothermal process was used to create In doped Sn 3 O 4 composite photocatalyst. It was demonstrated that the addition of In considerably raises the concentration of oxygen vacancy , which provides more unsaturated active sites, thus regulating the photocatalyst's electronic structure and surface properties, and promoting the carrier migration efficiency. Meanwhile, the light absorption range of samples after doping is redshifted, and the light absorption capacity is enhanced, which effectively improves the photocatalytic activity. Due to this, the optimal sample's average hydrogen production under visible light reached 22.83 μmol g −1 h −1 , 4.5 folds more than that of Sn 3 O 4 , and shown good stability. This research presents a novel approach for the development of metal oxide photocatalyst with excellent activity and durability.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
Journal of the American Chemical Society
·
2023
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IF 15
Bingquan Jia,Zhe Chen,Chengjin Li,Zhuofeng Li,Xiaoxia Zhou,Tao Wang,Wenxing Yang,Licheng Sun,Biaobiao Zhang
Developing industrial-grade electroreduction of CO2 to produce formate (HCOO–)/formic acid (HCOOH) depends on highly active electrocatalysts. However, structural changes due to the inevitable self-reduction of catalysts result in severe long-term stability issues at industrial-grade current density. Herein, linear cyanamide anion ([NCN]2–)-constructed indium cyanamide nanoparticles (InNCN) were investigated for CO2 reduction to HCOO– with a Faradaic efficiency of up to 96% under a partial current density (jformate) of 250 mA cm–2. Bulk electrolysis at a jformate of 400 mA cm–2 requires only −0.72 VRHE applied potential with iR correction. It also achieves continuous production of pure HCOOH at ∼125 mA cm–2 for 160 h. The excellent activity and stability of InNCN are attributed to its unique structural features, including strongly σ-donating [NCN]2– ligands, the potential structural transformation of [N═C═N]2– and [N≡C–N]2–, and the open framework structure. This study affirms metal cyanamides as promising novel materials for electrocatalytic CO2 reduction, broadening the variety of CO2 reduction catalysts and the understanding of structure–activity relationships.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Yanyan Dong,Yirong Hu,Jinghua Chen
The co-existence of diverse antibiotics in wastewater systems necessitates the development of multifunctional catalysts for simultaneous pollutant remediation. While indium oxide (In 2 O 3 ) presents advantages as a semiconductor photocatalyst through its high electrical conductivity, low resistivity, and inherent oxygen vacancies, practical applications in broad-spectrum pollutant degradation remain constrained by rapid charge carrier recombination and limited visible-light utilization efficiency. To address these challenges, we developed plasmonic Au nanoparticle-decorated In 2 O 3 composites (Au NPs /In 2 O 3 ) via a controlled in-situ reduction strategy. Systematic characterization revealed that the localized surface plasmon resonance (LSPR) effect of Au nanoparticles synergistically enhanced UV–vis absorption characteristics while effectively suppressing photogenerated electron-hole recombination, as evidenced by photoelectrochemical analyses including transient photocurrent response and electrochemical impedance spectroscopy. The optimized Au NPs /In 2 O 3 hybrid demonstrated exceptional photocatalytic performance, achieving 99.0 % degradation efficiency for both ofloxacin and tetracycline antibiotics under visible-light irradiation, along with remarkable cycling stability (>90 % efficiency retention after three cycles) and practical applicability across varied water matrices. Mechanistic investigations through radical trapping experiments identified the predominant roles of hole (h + ) and superoxide radical (·O 2 − ) species in the multi-pathway degradation processes. This study not only provides an effective strategy for engineering plasmon-enhanced In 2 O 3 photocatalysts but also establishes a methodological framework for developing multifunctional catalytic systems for environmental remediation.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 46
·e202404170
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IF 1.9
Pengtao Sheng,Haiyan Xu,Yaqi Zhang,Haiyue Xia,Haipeng Liu,Weili Li
Graphical We present a surfactant-associated controlled synthesis of copper (Cu)-deficient zinc (Zn)-doped Cu-indium (In)-selenium (Se) QDs, followed by a mechanistic investigation of their photophysical properties using surfactants. The findings described here are expected to provide a general strategy for enhancing the tunability of photophysical properties in other QDs systems. The shape and size-controlled synthesis of colloidal I−III−VI quantum dots (QDs) can be attained only by a few synthesis strategies via the introduction of various high-boiling-point organic surfactants. To further investigate this strategy, in this study, we present a surfactant-associated controlled synthesis of copper (Cu)-deficient, zinc (Zn)-doped Cu─indium (In)─selenium (Se) QDs, followed by a mechanistic investigation of their photophysical properties using surfactants, such as oleylamine (OLA), oleic acid (OA), and diphenylphosphine (DPP). OLA significantly promoted the quantum size effect-resultant emission wavelength red-shift, while OA controlled the homogeneous growth of QDs and improved the quantum yields. Moreover, Gaussian deconvolution of the photoluminescence spectra and the bandgap derived from the absorption spectra, by fitting, supported the fact that the radiative transition channels, especially for surface-trap-state-related transitions, are also dependent on the surfactants. Specifically, the conduction band electron-intragap state transitions and donor-acceptor transitions were present in all the prepared samples but accounted for different percentages. Furthermore, the surface-trap-state-related transitions significantly faded upon adding (i) OLA/OA as the sole surfactant to the cationic precursor and (ii) the OA + OLA + DPP mixture to the anionic precursor. The findings described here are expected to provide a general strategy for enhancing the tunability of photophysical properties in other QDs systems.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
WASTE MANAGEMENT
·
2019
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IF 5.431
Ruixue Wang,Yiqing Hou,Zhenming Xu
In the past, the pretreatment and indium extracting were conducted in independent disposal system to recycle indium from waste liquid crystal display (LCD), which make the recycling process inefficient and costly. In this study, an efficient and environmental friendly indium recycling process was proposed by an in-situ reaction process. The carbon residue generated in the pretreatment stage (organic removing stage) was used as the reductant to extract indium in the same reaction system. Comparison results indicated that the reaction effects of pyrolytic carbon were much better than coke since the structure of pyrolytic carbon is porous which would make the reactants contact better, and promote the reaction efficiency. Futhermore, results showed that the pyrolytic carbon was sufficient for the indium reduction without adding extra reductant, and indium conversion rate can reach 99.08% under the condition of 935 °C, 5 Pa, 2.5 wt%, 30 min, <0.3 mm. In this study, the organic pollutants were removed, while the indium also could be recycled in a closed-loop system. To sum up, this study could simplify the process route of waste LCD recycling, and provide fundamental basis as well as practical experience for recycling waste LCD environmentally and efficiently.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Zijian Wang,Dongzhi Zhang,Mingcong Tang,Yajing Chen,Yuehang Sun,Qingdong Chen,Jingdu Bian,Xingyan Shao
Hydrogen (H 2 ) is considered one of the promising energy sources to replace fossil fuels so efficient H 2 sensing technology is a necessary condition to ensure the safety of people’s livelihood and economic development. In this paper, ZnO obtained by calcination of precursor ZIF-8 has a regular dodecahedral structure. The product of In 2 O 3 obtained with the participation of the surfactant PEO-PPO-PEO has two different crystal forms, namely cubic phase c-In 2 O 3 and hexagonal h-In 2 O 3 . Crystal form c-In 2 O 3 is 7.07 wt% of the mass of h-In 2 O 3 . When ZnO is 5 wt% of In 2 O 3 , the H 2 sensor based on the ZnO (5 %)-Inc/Inh composite material has the best response performance and the operating temperature is 450 °C. The sensor’s response time for detecting 5000 ppm H 2 is less than 1 s, and the recovery time is 6 s with a response intensity of 79.91. The limit of detection (LOD) is 53 ppb, which is much lower than the explosive concentration (4–75 V/V%). Density functional theory (DFT) is utilized for investigating the performance advantages of Inc/Inh composites over pure c-In 2 O 3 and h-In 2 O 3 and further elaborating the mechanism of ZnO improving the gas-sensing performance of ZnO (5 %)-Inc/Inh. The sensor based on ZnO (5 %)-Inc/Inh composite may guide the research of high-performance H 2 sensors. The H 2 adsorption mechanism of the sensor was analyzed based on the oxygen adsorption mechanism.
研究领域:
材料科学
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能源技术
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纳米科技
✓ 已验证
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2018
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IF 2.21
Xiaoying Lu,Fang Deng,Min Liu,Xubiao Luo,Aijie Wang
CuInS 2 semiconductor were synthesized by regulating Cu/In molar ratio via a hot solvent method. Different Cu/In molar ratio in reaction system had significant influence on the BET surface area , charge separation and photocatalytic activity of CuInS 2 . The CuInS 2 with optimal Cu/In ratio of 1:1.5 exhibits the most efficient charge separation and transfer, leading to the highest photocatalytic activity . The mineralization efficiency of pharmaceutical wastewater by CuInS 2 (Cu:In = 1:1.5) was 67.5% in 6 h, and CuInS 2 (Cu:In = 1:1.5) exhibited high stability, indicating that CuInS 2 has a promising prospect in real pharmaceutical wastewater treatment .
研究领域:
材料科学
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环境科学
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DOI
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 33
·期 5
·055602
·
IF 3.874
Xinsu Zhang,Hao Lv,Weishuo Xing,Yanjun Li,Chong Geng,Shu Xu
Significant advance was realized on the economic synthesis of InP quantum dots (QDs) by using aminophosphines as phosphorus precursor. However, the low reaction activity and thermal degradation of aminophosphines bring severe difficulty for growth control of InP QDs. Here, we employed trioctylphosphine (TOP) as a surfactant to accelerate the growth of the InP QDs. The reaction mechanism study reveals that the TOP could form a reactive complex with indium halides that effectively accelerates the formation of InP monomer and reduces the demand for reaction temperature. On this basis, the effect of reaction temperature, precursors, and zinc halide additives on the growth of the TOP-InP QDs was explored. This strategy alleviates the difficulty in growth control of InP QDs and also benefits to the synthesis of luminescent InP/ZnS core–shell QDs within visible regime. A white-light emitting diode device was fabricated with the InP/ZnS QDs that demonstrates their application potential in light-emitting devices.
研究领域:
材料科学
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化学工程
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纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）