Journal of Environmental Chemical Engineering
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2021
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IF 5.909
Mengyang Xu,Xiaoxue Zhao,Haopeng Jiang,Songtao Chen,Pengwei Huo
Converting carbon dioxide into valuable chemicals is seen as a promising strategy for slowing global warming while enriching energy supplies. Photocatalysts derived from Metal-Organic Frameworks (MOFs) can not only overcome the problem of poor stability of MOFs, but also inherit the advantages of MOFs to some extent. Herein, carbon doped In 2 O 3 (C-In 2 O 3 ) hollow tubular is synthesized by calcination of MIL-68(In) as sacrificial template. Then C-In 2 O 3 and g-C 3 N 4 are hydrothermal to obtain C-In 2 O 3 /g-C 3 N 4 heterojunction . The unique hollow tubular structure, carbon doping and type-II heterojunction of C-In 2 O 3 /g-C 3 N 4 expand the light absorption capacity and promote the separation of photogenerated electron-hole pairs, thus significantly improve the activity of photocatalytic reduction of CO 2 . Among them, C-In 2 O 3 /g-C 3 N 4 -5 shows the highest CO 2 reduction activity towards CO (153.42 μmol/g/h) and CH 4 (110.31 μmol/g/h).
研究领域:
材料科学
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环境科学
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高影响因子
CHEMICAL PHYSICS LETTERS
·
2016
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IF 1.86
Xuesong Wang,Jinbao Zhang,Yue He,Lianyuan Wang,Li Liu,Han Wang,Xuexin Guo,Hongwei Lian
Pure and Nd-doped porous In 2 O 3 nanotubes have been successfully synthesized by single-capillary electrospinning method. The SEM images displays the novel structure of Nd-doped In 2 O 3 which has pores distributed on the surface of nanotubes. The subsequent test results demonstrate that Nd-doped porous In 2 O 3 nanotubes possess excellent gas-sensing properties to formaldehyde. The response of Nd-doped porous In 2 O 3 nanotubes to 100 ppm formaldehyde is 44.6 at the optimum operating temperature of 240 °C, which is 3.6 times larger than that of pure porous In 2 O 3 nanotubes (12.5), and the response and recovery times to 100 ppm formaldehyde are 15 and 50 s, respectively.
研究领域:
材料科学
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环境科学
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 30
·期 8
·7950-7962
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IF 2.195
Hu Bingbing,Guo Qiang,Wang Kang,Wang Xitao
In this paper, a series of indium oxides were prepared by calcining the In(OH) 3 precursors, which were synthesized by hydrothermal method using the mixed solution of ethylenediamine (En) and water as a solvent. The morphologies, particle sizes, pore structure, crystallinity and surface defect concentration of these photocatalysts were adjusted by varying the ratio of En to water during the preparation of In(OH) 3 precursors. The results revealed that In 2 O 3 photocatalysts obtained from the precursor prepared in En containing solvent exhibited much higher photocatalytic activities for CO 2 reduction with H 2 O when compared to that derived from the precursor prepared in pure water. This result can be ascribed to several reasons as following. Firstly, the En addition with a suitable amount can improve the crystallinity of In 2 O 3 and decrease the surface defect concentration, which obviously depressed the recombination of photogenerated electrons and holes. Also, the addition of En during the preparation of precursor can decrease the particle size, increase specific surface area and pore structure, resulting into the increase of active sites. Finally, the band gap of In 2 O 3 can be slightly narrowed after the addition of En, resulting in enhanced light absorption in the visible region. When the ratio of ethylenediamine to water is 1:1, the as-prepared In 2 O 3 possessing the largest specific surface area and pore volume, enhanced light absorption ability and higher hole–electron separation efficiency, exhibited the highest photocatalytic activity. Under visible light irradiation, the H 2 , CO and CH 4 production rates of 5.3, 8.3 and 27.2 µmol/g cat /h can be achieved, respectively.
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
SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Hairui Fang,Hong Chen,Feng Zhang,Rong Tan,Chenshuai Han,Xin Ai,Xiao Ma,Yiwen Cui,Dong Wang
Sulfur hexafluoride (SF 6 ) from Gas Insulated Switchgear (GIS) will decompose and produce hydrogen sulfide (H 2 S) in the event of equipment failure. Therefore, the detection of H 2 S can determine whether the equipment has malfunctioned. Due to the low concentration of the SF 6 decomposition product H 2 S and its application in industrial environments, sensors must have a low detection limit and rapid response time . Considering that the oxides of rare earth elements can improve the sensing characteristics, praseodymium oxide (Pr 6 O 11 )-indium oxide (In 2 O 3 ) was prepared. The impact of Pr 6 O 11 doping on In 2 O 3 was investigated through characterization methods. To validate its feasibility for use in GIS, the best sensor (F3) exhibits good sensing characteristics for H 2 S in the SF 6 and air ambient. The responses to 10 parts per million (ppm) H 2 S at 190°C were 146.6 in SF 6 and 190.8 in air. In SF 6 ambient, the F3 sensor demonstrated a low detection limit (50 parts per billion (ppb)). The good sensing characteristics are attributed to the doping of rare earth elements, which induces an increase in the proportion of defect oxygen and accelerate the chemical reaction. The sensing characteristics of the material can be attributed to the doping of Pr 6 O 11 and the electronic effect. This study provides a novel approach for detecting H 2 S generated from SF 6 decomposition.
研究领域:
材料科学
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电气工程
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传感器技术
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高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
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2024
·Vol. 130
·期 10
·1-12
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IF 2.5
Tang Mingxin,Qin Cong,Sun Xueya,Li Mengwei,Wang Yihui,Cao Jianliang,Wang Yan
Hydrogen (H 2 ) energy, as a clean energy source, has high energy density and durability, while H 2 is flammable and explosive, which requires strict safety technology measures to ensure the safety of high-pressure storage transportation. Therefore, the development of sensitive sensors is needed. In this study, In 2 O 3 microspheres with different Pd loadings were fabricated by hydrothermal method. Compared with the pristine In 2 O 3 gas sensor, the optimal operating temperature of the In 2 O 3 sensor is reduced from 160 ℃ to 80 ℃ after loading Pd. Among the prepared Pd/In 2 O 3 gas sensors, the response value of the 2 at% Pd/In 2 O 3 sensor towards 1000 ppm H 2 is 50.743 at 80 ℃. The response/recovery time is 80 s/235 s. The improved H 2 sensing performance can be ascribed to the chemical and electron sensitization of Pd, and the formation of PdO, PdH x . This study shows that Pd-loaded In 2 O 3 can effectively reduce the optimal operating temperature and enhance the response value for detecting H 2 in the range of 5-5000 ppm. Therefore, this sensor has good application prospects for detecting H 2 at low temperatures.
研究领域:
材料科学
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传感器技术
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2021
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IF 19.503
Jiehong He,Pin Lyu,Bo Jiang,Shaoshuai Chang,Haoran Du,Jian Zhu,Hexing Li
Photocatalytic CO 2 hydrogenation into fuels and value-added chemicals is considered as a promising strategy for CO 2 conversion and utilization. However, the photocatalysts used usually displays low efficiency and poor durability. Herein we developed a novel catalyst by combining NiB amorphous alloy with In 2 O 3 semiconductor, which exhibited very high HCOOH yield (5158.0 umol g −1 h −1 ) in CO 2 hydrogenation under sunlight irradiation. The In 2 O 3 acted as a photocatalyst for generating photoelectrons to reduce CO 2 and provided sufficient surface hydroxyl (In−OH) groups favouring CO 2 adsorption during the reaction. The high dispersion of NiB nanoparticles (co-catalyst) and interaction with In 2 O 3 provided the rich interface between NiB and In 2 O 3 , favoring the surface reactions between CO 2 and H 2 . Meanwhile, the unique amorphous alloy structure made the Ni electron-enriched, which promoted CO 2 hydrogenation through the H 2 dissociation. More importantly, the NiB amorphous alloy with good electric conductivity facilitated the transfer of photoelectrons from In 2 O 3 , which sufficiently diminished the photoelectron-hole recombination, leading to the enhanced quantum efficiency in photocatalytic CO 2 hydrogenation.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
MATERIALS RESEARCH BULLETIN
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2023
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IF 5.4
Yue-Jie Bai,Li-Ying Liu,Xun-Kai Duan,Guang-Xuan Zhang,Chao Wang,Xin-Yu Zhou,Changhao Wang,Bing-Rong Wang,Xiao-Lin Wei,Ru-zhi Wang
To further develop sensing materials for NO 2 gas detection practical application, the operating temperature of the sensor should be significantly reduced. In this paper, In 2 O 3 flowers were prepared by the microwave-assisted hydrothermal method . Then, In 2 O 3 was doped using TAA (thioacetamide). The prepared S-doped In 2 O 3 flowers have good gas sensitivity and significantly reduced operating temperature. When exposed to 10 ppm NO 2 gas, the corresponding response was 250 at 118 °C. It can be demonstrated by the first principle calculations, in which the doping of S atoms changes the electron structure of In 2 O 3 from semiconductor to metal with a lower potential barrier. Then, significantly affects the electron crossing the intergranular potential barriers. Therefore, the operating temperature of the sensor can be reduced. Our research results will provide new research ideas and technical approaches for designing, fabricating, and applying a new generation of In 2 O 3 gas sensors.
研究领域:
材料科学
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化学
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高影响因子
ACS Applied Nano Materials
·
2023
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IF 5.9
Jinyu Huang,Zichao Ma,Junda Li,Zhonglei Zhang,Jihua Tang,Xiangdong Cao,Wei Xu,Xiaojin Zhao,Yatao Yang,Xiaofang Pan,Yu Du
Detecting the trace ppb level of formaldehyde (HCHO) in indoor ambient and human exhaled breath using a metal oxide semiconductor gas sensor has attracted increasing attention. A hybrid nanostructure consisting of In2O3 nanoparticles grown on a Au nanocage (NC) surface was synthesized using a one-step solvothermal method, which was then used to be fabricated as HCHO sensors. The 0.5 wt % Au NC/In2O3 sensor featured an ultrahigh response of 8.8 for 1 ppm of HCHO at a low operating temperature (145 °C), which was nearly 2.5 times higher than that of the pure In2O3 sensor. Furthermore, it possessed outstanding selectivity and a low detection limit (25 ppb) toward HCHO. This excellent sensing property was possibly due to the increase in chemisorbed oxygens on its surface due to the Au NC spillover mechanism, an enhanced adsorption capability for HCHO because of the phase transition from cubic to rhombohedral In2O3, good gas diffusion, and a large surface area with a Au NC/In2O3 3D hierarchical structure, as well as the widened electron depletion layer derived from the Schottky barriers and homojunctions between the components of Au NC/In2O3.
研究领域:
材料科学
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传感技术
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环境监测
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DOI
高影响因子
DALTON TRANSACTIONS
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2024
·Vol. 53
·期 29
·12291-12300
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IF 3.5
Liangliang Huang,Tao Peng,Rui Wang,Beibei He,Jun Jin,Huanwen Wang,Yansheng Gong
Photocatalytic ammonia production holds immense promise as an environmentally sustainable approach to nitrogen fixation. In this study, In2O3/In2S3-ZnCdS ternary heterostructures were successfully constructed through an innovative in situ anion exchange process, coupled with a low-temperature hydrothermal method for ZnCdS (ZCS) incorporation. The resulting In2O3/In2S3-ZCS photocatalyst was proved to be highly efficient in converting N2 to NH3 under mild conditions, eliminating the need for sacrificial agents or precious metal catalysts. Notably, the NH4+ yield of In2O3/In2S3-0.5ZCS reached a significant level of 71.2 μmol g−1 h−1, which was 10.47 times higher than that of In2O3 (6.8 μmol g−1 h−1) and 3.22 times higher than that of In2O3/In2S3 (22.1 μmol g−1 h−1). This outstanding performance can be attributed to the ternary heterojunction configuration, which significantly extends the lifetime of photogenerated carriers and enhances the spatial separation of electrons and holes. The synergistic interplay between CdZnS, In2S3, and In2O3 in the heterojunction facilitates electron transport, thereby boosting the rate of the photocatalytic nitrogen fixation reaction. Our study not only validates the efficacy of ternary heterojunctions in photocatalytic nitrogen fixation but also offers valuable insights for the design and construction of such catalysts for future applications.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
PubMed
高影响因子
VACUUM
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2024
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IF 3.8
Xiaoqian Shi,ZhiChen Lu,Qi Wang,Peng Song
Developing low-cost, realistic low temperature operable ammonia sensor is highly desirable in industrial for environmental monitoring. This paper focuses on the preparation of Ag nanoparticles-loaded SnO 2 /In 2 O 3 ternary composites by combining both indium oxide and metal-organic frameworks (MOFs) compounds by hydrothermal method . They both remain as pure In 2 O 3 flakes and the size of each flake matrix is about 2 μm, which indicates that both Ag loading and SnO 2 composite have not damaged or changed the crystal structure of the In 2 O 3 -based composites. The best response gas for the Ag/SnO 2 /In 2 O 3 material was ammonia with a response value of 9.783 at the optimum operating temperature of 160 °C. The difference in each set of data after three cycles of testing was not more than 0.25. The tests showed that the sensor had good reproducibility and sensitivity, and had a low detection limit.
研究领域:
材料科学
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环境监测
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化学传感器
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
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IF 8
Zhiguo Yang,Xingtai Chen,Qiuying Chen,Jiayi Qu,Yujun Guo,Kaiwen Zhou,Tianren Wang,Davoud Dastan,Xiaoning Wang,Feifei Wang,Xiaoming Tan,Xi-Tao Yin,Xiaoguang Ma
In this work, In 2 O 3 nanospheres were synthesized using urea as a carbon template and modified with Co ions. The synthesized materials were characterized using various instruments to obtain information about the elemental composition and morphology of the materials. The results showed that Co ions replaced the lattice position of In ions and synthesized nanospheres aggregated from 20 nm particles. The results of gas sensitivity tests on all the samples showed that the response to 50 ppm n-butanol at 250 °C reached 540 when Co was doped up to 5 at%. In comparison, the sensor showed very low response to benzene gas with good selectivity. The high response of the sensor to n-butanol is due to the increase in vacancy oxygen content and redox reactions due to the multivalent nature of Co ions. The article concludes with a detailed analysis of the sensing mechanism.
研究领域:
材料科学
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传感器技术
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 76
·72015-72021
·
IF 3.289
Fang Jiang,Haitao Zhao,Huan Chen,Chenmin Xu,Jian Chen
CeO2-doped indium oxide photocatalysts (xCeO2/In2O3) with various CeO2 doping amounts were synthesized and systematically characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV-vis spectra, photoluminescence spectroscopy (PL) and photocurrent measurements. The as-obtained xCeO2/In2O3 photocatalysts were used in photocatalytic degradation of PFOA for the first time and much higher photocatalytic activity of xCeO2/In2O3 than CeO2 and In2O3 was obtained under UV light irradiation. The excellent photocatalytic activity of 0.86% CeO2/In2O3 could be mainly derived from effective inhibition of recombination of photo-induced electron-holes caused by the charge transfer between CeO2 and In2O3. Moreover, the 0.86% CeO2/In2O3 catalyst showed excellent photocatalytic stability in cycling runs for the photocatalytic degradation of PFOA, providing a great potential of CeO2/In2O3 catalysts for PFOA treatment.
研究领域:
环境科学
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材料科学
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高影响因子
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