ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Yan Shao,Jun Wan,Xiaoxia Ou,Cui Quan,Ningbo Gao,Xin Wang,Feng Zeng,Rongsheng Cai,Xiaolei Fan,Huanhao Chen
Engineering Pd–In2O3 interaction is key to developing catalysts with the desired CO2 hydrogenation activity toward methanol synthesis. Here, the crystalline phase of In2O3 nanospheres was tuned by changing the calcination temperature, which was found to affect the Pd–In2O3 interaction and thus the supported Pd states and CO2 hydrogenation performance of the prepared Pd/In2O3-a catalysts (where a refers to the calcination temperature for preparing In2O3). The fresh Pd/In2O3-a catalysts show varied initial activities, and after the induction period, their performance stabilized though being different. During the 100 h catalysis, catalyst microstructures changed, showing Pd aggregation and Pd–In alloying, which was related to the nature of the crystalline phase of In2O3. The hexagonal (h-In2O3) phase in Pd/In2O3-400 possesses concentrated surface OH groups and limited mobility. The relatively poor mobility limits Pd–In alloying, which possibly suppresses the hydrogen spillover effect, causing low CO2 conversion (8%) and methanol selectivity (45%) under steady-state conditions at 5 MPa and 300 °C. Conversely, the cubic In2O3 (c-In2O3) phase promotes Pd–In alloying and modifies Pd–In2O3 interaction during the reaction. The activity data show that Pd/In2O3-600 with the mixed phases of In2O3 (h/c-In2O3) demonstrated appropriate Pd–In2O3 interaction, leading to the Pd core InOx shell structure with the comparatively best methanol selectivity of about 65% at steady state. Conversely, Pd/In2O3-800 with the pure cubic In2O3 (c-In2O3) phase and a relatively low specific surface area of 16 m2 g–1 encourages the sintering of Pd and thereby the formation of homogeneous Pd–In alloys, having a moderate methanol selectivity of about 50%. These findings highlight the importance of the In2O3 crystal phase engineering in the catalytic CO2 hydrogenation over Pd/In2O3 catalysts and the dynamics of Pd–In interactions, which affect the methanol yield.
研究领域:
催化化学
·
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2014
·
IF 1.761
Xiao Chi,Changbai Liu,Yu Li,Haiying Li,Li Liu,Xiaoqing Bo,Lili Liu,Chang Su
Pristine In 2 O 3 and ZnO–In 2 O 3 composited nanotubes were synthesized by the electrospinning technic and followed by calcination . The formation of ZnO–In 2 O 3 n–n heterojunctions was found to be highly sensitive to acetone gas. X-ray powder diffraction (XRD), Scanning electron microscope (SEM) and energy dispersive X-ray spectrometry (EDS) were respectively used to characterize surface crystallinity and morphology. The possible mechanism of nanotubes formation was also investigated. Gas sensors were made based on the as-synthesized materials to investigate their gas sensing properties. Compare with the pristine In 2 O 3 nanotubes, ZnO–In 2 O 3 composite nanotubes show the obviously improved of acetone sensitivity. The sensitivity of ZnO–In 2 O 3 composite nanotubes is about 43.2, which is about triple times larger than that of the pristine In 2 O 3 nanotubes to 60 ppm acetone at 280 °C. The response and recovery times of ZnO–In 2 O 3 nanotubes to 60 ppm acetone are about 5 and 25 s. In addition, ZnO–In 2 O 3 composite nanotubes sensor also possesses a good selectivity to acetone.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
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 ).
研究领域:
材料科学
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Bolin Ma,Guanghui Chen,Lingling Zhou,Chengyang Ni,Xinyu Sun,Lei Zhang,Xinguo Xi,Lanqin Tang,Yong Zhou
The development of highly efficient photocatalysts for CO2 reduction remains a critical challenge in achieving sustainable energy conversion. In this study, we report the synthesis of a UiO66-NH2@In2O3, integrating UiO66-NH2 metal organic frameworks (MOFs) with indium oxide (In2O3) nanoparticles, forming a robust heterostructure. Characterization results demonstrated that calcination at 250 °C for 4 hours yielded a heterostructure with indium uniformly incorporated, as confirmed by XRD, SEM, TEM and ICP-OES analyses. XPS studies revealed significant electronic interactions between UiO66-NH2 and In2O3, including shifts in binding energies of indium and zirconium, indicative of chemical bonding. This heterostructure facilitated enhanced charge separation and transfer, as evidenced by photocurrent measurements, leading to superior photocatalytic CO2 reduction performance. Under light irradiation, UiO66-NH2@In2O3 achieved a CO production rate of 83.68 μmol g−1 during the first hour and a cumulative yield of 485.08 μmol g−1 after 7 hours, significantly outperforming pristine UiO66-NH2 and In2O3. The superior activity is attributed to the large surface area of UiO66-NH2, facilitating CO2 adsorption, and the heterojunction formation with In2O3, enhancing charge carrier dynamics. These findings highlight the synergistic effects of UiO66-NH2 and In2O3, providing insights into the design of advanced photocatalysts for environmental and energy applications.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2016
·Vol. 27
·期 5
·5153-5157
·
IF 1.798
Liu Lili,Li Shouchun,Guo Xin,Wang Lianyuan,Liu Li,Wang Xuesong
It has been reported a lot that nanowire and nanotube semiconductor oxide type sensor possess excellent sensing property. Many works ascribed excellent sensing properties to the big specific surface area. Herein, In 2 O 3 nanofiber and nanotube were synthesized by single nozzle electrospinning and followed by calcination with different heating rate. And the samples were characterized by scanning electron microscopy, and powder X-ray diffraction. Their gas sensing properties were studied to investigate the advantages of their morphologies, and the response and recovery dynamic curves were also tested to investigate their gas sensitive characteristics. The results show that acetone sensing sensitivity based on nanotubes is better than that of nanowires.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2024
·Vol. 31
·期 3
·1043-1051
·
IF 2.5
Zhang Zhengxin,Zhang Deqi,Yang Li,Hou Ming,Gao Jiyun,Xia Yi,Guo Shenghui
Modifying with rare earth elements has been proven to be an effective means of enhancing the gas-sensing properties of oxides. In this work, Gd-In 2 O 3 based sensor was developed, which showed high response to 100 ppm xylene gas ( \({R}_{a}/{R}_{g}\) = 17.8) fast response time (11 s) at 350 °C, this response value was 5.4 times higher compared to the unmodified In 2 O 3 sensor ( \({R}_{a}/{R}_{g}\) =3.3). The introduction of the rare earth element not only improves the electrical properties of the sensitive material to provide a more suitable resistance but also strengthens the gas adsorption ability and the catalytic effect on the surface of the sensitive material, leading to enhanced sensing performance.
研究领域:
材料科学
·
传感技术
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Sufaid Shah,Shahid Hussain,Salah Ud Din,Abdulnasser M. Karami,You Tianyan,Mingsong Wang,Guiwu Liu,Guanjun Qiao
The current study, accurately designed and created a two-dimensional (2D) structure of SnO 2 nano-flowers and In 2 O 3 nanoparticles using a simple hydrothermal technique and sol-gel method, respectively. On the outer surface of SnO 2 nanoflowers the In 2 O 3 nanoparticles were uniformly growing, clearly revealed by field emission scanning electron microscopic. Besides, crystal phase structure, surface area and elementals composition were characterized by XRD, BET, TEM, EDS, XPS and the gas sensing properties of In 2 O 3 @SnO 2 NFs. The results exhibited that 2 wt% In 2 O 3 @SnO 2 NFs sensor is highly sensitive to NO 2 , the response (R g /R a ) to 30 ppm NO 2 is 94.5, and at 50 ppb the response measured 0.61 at 150 °C, the response time is 32 and 51s, respectively, along with good moisture resistance. Besides along with excellent selectivity, long-term stability, and relative humidity (RH) in high-humidity environment, the 2 wt% In 2 O 3 @SnO 2 NFs still maintain high response 91 at 30 ppm. More importantly, at room temperature the response was (Rg/Ra = 1.01) at detection limit 300 ppb towards NO 2 , which could use be for trace NO 2 gas detection. The large specific surface areas of SnO 2 , the abundance of oxygen species adsorbed on the surface, the distinctive electron transformation between heterojunction materials, and high electron transmission channel of SnO 2 and In 2 O 3 transition layer were all considered to have a synergistic effect thatin2 contributed to excellent sensing properties of In 2 O 3 @SnO 2 NFs.
研究领域:
材料科学
·
环境监测
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2014
·Vol. 14
·期 5
·3653-3657
·
IF 1.339
Liu Juan,Li Wei,Zhu Linghui,Li Chao,Qu Fengdong,Guo Wenbin,Feng Caihui,Ruan Shengping
In this paper, In2O3 nanotubes were prepared by an electrospinning method combined with an oriented-contract calcinations scheme, and characterized by differential thermal and thermal gravimetric analyzer (DTA-TGA), X-ray diffraction (XRD), and scanning electron
microscopy (SEM). Ethanol sensing properties of the as-prepared nanotubes were investigated. The results showed that the In2O3 nanotubes were obtained at a fast heating rate of 100 °C/min. Ethanol sensing properties indicated that the nanotubes exhibit a high response
of 87.5 to 500 ppm ethanol, fast response (20 s) and recovery (18 s) rate at the optimal operating temperature of 260 °C. Moreover, the nanotubes also exhibit good selectivity.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
PubMed
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 16
·2289
·
IF 5.3
Zhenyu Wang,Haizhen Ding,Xuefeng Liu,Jing Zhao
Semiconductor oxide gas sensors have important applications in environmental protection, domestic health, and other fields. Research has shown that designing the morphology of sensitive materials can effectively improve the sensing characteristics of sensors. In this paper, by controlling the solvothermal reaction time, a unique hexagonal flower-like structure of In2O3materials consisting of cuboid nanorods with a side length of 100–300 nm was prepared. The characterization results indicated that with the increase in reaction time, the materials exhibited significant morphological evolution. When the solvent heating time is 5 h, the flower-like structure is basically composed of hexagonal nanosheets with a thickness of several hundred nanometers and a side length of several micrometers. With the increase in reaction time, the apex angles of the nano sheets gradually become obtuse, and, finally, with the Ostwald ripening process, they become cuboid nanorods with side lengths of 100–300 nanometers, forming unique micro-flowers. Among them, the material prepared with a reaction time of 20 h has good sensing performance for NO2, exhibiting low operating temperature and detection limit, good selectivity, repeatability, and long-term stability, thus suggesting a good application prospect.Keywords:In2O3;micro-flowers;morphological evolution;NO2sensor;solvothermal
研究领域:
材料科学
·
环境科学
·
化学传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Semiconductors
·
2016
·Vol. 37
·期 1
·013005
·
IF 0
Li Liu,Shouchun Li,Xin Guo,Yue He,Lianyuan Wang
In2O3–Fe2O3 nanotubes are synthesized by an electrospinning method. The as-synthesized materials are characterized by scanning electron microscope and X-ray powder diffraction. The gas sensing results show that In2O3–Fe2O3 nanotubes exhibit excellent sensing properties to acetone and formaldehyde at different operating temperatures. The responses of gas sensors based on In2O3–Fe2O3 nanotubes to 100 ppm acetone and 100 ppm formaldehyde are 25 (240 °C) and 15 (260 °C), and the response/recovery times are 3/7 s and 4/7 s, respectively. The responses of In2O3–Fe2O3 nanotubes to 1 ppm acetone (240 °C) and formaldehyde (260 °C) are 3.5 and 1.8, respectively. Moreover, the gas sensor based on In2O3–Fe2O3 nanotubes also possesses an excellent selectivity to acetone and formaldehyde.
研究领域:
材料科学
·
传感技术
✓ 已验证
DOI
CERAMICS INTERNATIONAL
·
2013
·
IF 1.789
Juan Liu,Wenbin Guo,Fengdong Qu,Caihui Feng,Chao Li,Linghui Zhu,Jingran Zhou,Shengping Ruan,Weiyou Chen
Pristine and vanadium-doped In 2 O 3 nanofibers were fabricated by electrospinning and their sensing properties to H 2 S gas were studied. X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to investigate the inner structure and the surface morphology . The H 2 S-sensing performances were characterized at different temperatures ranging from 50 to 170 °C. The sensor based on 6 mol% V-doped In 2 O 3 nanofibers exhibit the highest response, i.e. 13.9–50 ppm H 2 S at the relatively low temperature of 90 °C. In addition, the fast response (15 s) and recovery (18 s) time, and good selectivity were observed.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Yang Yang,Mengyao Tan,Xiaoman Li,Min Luo
The photocatalytic nitrogen reduction reaction provides an alternative process for nitrogen cycling and ammonia (NH3) production under mild conditions. Herein, we have synthesized Ag-loaded In2O3 (Ag@In2O3-X) by solvothermal and photoreduction methods. The introduction of Ag significantly alters the band structure of In2O3, resulting in a slight reduction in the band gap and a more negative conduction band position, thereby facilitating the generation of reductive electrons in In2O3. Moreover, the synergistic interaction between loaded Ag nanoparticles and In2O3 forms a Schottky barrier, which widens the light absorption range and promotes charge separation. Under simulated sunlight, the photocatalytic nitrogen fixation performance of Ag@In2O3-5 reaches 35.56 μmol h−1 gcat−1, which is higher than other composites and 3.58 times that of pure In2O3. At the same time, the catalyst has good structural stability and cycle life. Density functional theory (DFT) calculations demonstrate that Ag exhibits a stronger interaction with N2 and lowers the potential barrier of the N2 hydrogenation reaction. The synergistic effect between precious metals and semiconductors offers novel insights and presents challenges for the photocatalytic N2 fixation process. This work provides new insights and challenges for designing and synthesizing nanomaterials for photocatalytic nitrogen fixation.
研究领域:
材料科学
·
环境科学
·
化学
✓ 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）