JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
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IF 7.489
Shan Yu,Zhanghui Xie,Maoxia Ran,Fan Wu,Yunqian Zhong,Meng Dan,Ying Zhou
Through direct addition of inorganic zinc ions into the solution of indium phosphide quantum dots (InP QDs) at ambient environment, we here present a facile but effective method to modify InP QDs for photocatalytic hydrogen evolution from hydrogen sulfide (H 2 S). X-ray diffraction patterns and transmission electron microscopic images demonstrate that zinc ions have no significant influence on the crystal structure and morphology of InP QDs, while X-ray photoemission spectra and UV–Vis diffuse and reflectance spectra indicate that zinc ions mainly adsorbed on the surface of InP QDs. Photocatalytic results show the average hydrogen evolution rate has been enhanced to 2.9 times after modification and H 2 S has indeed involves in the hydrogen evolution process. Steady-state and transient photoluminescence spectra prove that zinc ions could effectively eliminate the surface traps on InP QDs, which is crucial to suppress the recombination of charge carriers. In addition, the electrostatic interaction between zinc ions and the surface sulfide from InP QDs could mitigate the repulsion between QDs and sulfide/hydrosulfide, which may promote the surface oxidative reaction during photocatalysis. This work avoids the traditional harsh and complicated operations required for surface passivation of QDs, which offers a convenient way for optimization of QDs in photocatalysis.
研究领域:
材料科学
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环境科学
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化学
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DOI
PubMed
高影响因子
CRYSTENGCOMM
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2020
·Vol. 22
·期 20
·3474-3481
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IF 3.117
Xiaopeng Zhou,Jiejun Ren,Xuan Dong,Xicheng Wang,Takatoshi Seto,Yuhua Wang
As a representative of III–V semiconductor materials, InP/ZnS quantum dots are regarded as the star material in the field of light-emitting devices due to their low toxicity and suitable luminescence range. However, there are still some major problems in the preparation process of InP/ZnS QDs, such as phosphine precursors are expensive and difficult to preserve, the nucleation time of short wavelength InP/ZnS QDs is too short and the size distribution is too large. In this paper, we'll replace the traditional tris(trimethylsilyl)phosphine with tris(diethylamino)phosphine as a cheaper phosphine precursor and propose a novel and convenient method for adjusting the luminescence wavelength of InP/ZnS QDs. Different from the traditional method to adjust the emission wavelength by changing the nucleation time, the emission wavelength of InP/ZnS QDs was regulated by changing the number of initially formed cores. Zeolites provide a nucleation site for the InP cores. InP/ZnS QDs that emit between 522 nm and 589 nm were obtained. Moreover, the obtained InP/ZnS QDs have good monochromaticity, and the minimum half-width (half-full width) is up to 48 nm. This method provides a new way to adjust the size of quantum dots with good performance.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
CRYSTENGCOMM
·
2019
·Vol. 21
·期 12
·1876-1885
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IF 3.382
Xiaole Zhang,Dalei Song,Qi Liu,Rongrong Chen,Jingyuan Liu,Hongsen Zhang,Jing Yu,Peili Liu,Jun Wang
Pure and 1–4 mol% cobalt doped indium oxide (Co-doped In2O3) sponge-like microstructures with high specific surface area were fabricated by a simple and environmentally friendly hydrothermal method. The specific surface area and porosity of Co-doped sponge-like In2O3 microstructures can be regulated through the modulation of Co/In molar ratios. The as-prepared sensors based on Co-doped In2O3 exhibit favorable gas sensing properties toward acetone gas; their porous structure can create more adsorption sites for the adsorption of oxygen molecules and the diffusion of the target gas, leading to significant improvement in sensing performance. In particular, 3 mol% Co-doped In2O3 presents the greatest response to acetone vapor at 240 °C, which is about 3.25 times higher than that of pure In2O3. The sensor also exhibits rapid response-recovery time (1.143 s/37.5 s), low detection limit (2.76 at 5 ppm), good reproducibility and high selectivity, making it a promising material for acetone detection.
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
Inorganic Chemistry Frontiers
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2019
·Vol. 6
·期 7
·1767-1774
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IF 5.934
Yanfang Zhao,Xiaoxin Zou,Hui Chen,Xuefeng Chu,Guo-Dong Li
Formaldehyde is one of the most harmful environmental toxins, which should be less than 60 ppb indoors. Although some sensors, based on metal oxide semiconductors, are fabricated for the detection of formaldehyde, the sensing performance is not satisfactory yet. In this work, some rare earth metals are successfully introduced into In2O3 by a simple electrospinning method. The structure, composition and chemical state of the products are investigated by XRD, TEM, EDS, XPS, TPD and a Kelvin probe. And the sensor based on 5Y-doped In2O3 exhibits the highest response to formaldehyde. Moreover, this sensor also shows an ultra-low detection limit (50 ppb), a short response time (1 s) and good selectivity. It is believed that the improved sensing response and selectivity may originate from the elevated Fermi level and the increased surface basicity of In2O3, leading to the increase of chemisorbed oxygen on the surface and adsorption of formaldehyde.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2019
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IF 3.834
Jingru Guan,Huiqin Wang,Jinze Li,Changchang Ma,Pengwei Huo
A series of novel porous indium (III) oxide (In 2 O 3 ) and nanocubic cerium oxide (CeO 2 ) loading HCl treated attapulgite (HATP) ternary photocatalysts were successfully synthesized. Simultaneously, all photocatalysts were performed the CO 2 reduction under UV-light. To explore the crystal structures, morphologies and electrochemical characteristics of as-synthesized samples, the XRD, SEM and TEM, and transient photocurrent techniques were performed in this work. Besides, as an optimized In 2 O 3 /CeO 2 /HATP sample presents the highest activity for CO (32.03 µmol/g) and CH 4 (16.94 µmol/g) yields, which is 6.11-fold and 6.78-fold times higher than those of pure CeO 2 under UV-light (8 W) irradiation.
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
ACS Applied Materials & Interfaces
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2016
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IF 7.145
Minchao Qin,Junjie Ma,Weijun Ke,Pingli Qin,Hongwei Lei,Hong Tao,Xiaolu Zheng,Liangbin Xiong,Qin Liu,Zhiliang Chen,Junzheng Lu,Guang Yang,Guojia Fang
Indium oxide (In2O3) as a promising n-type semiconductor material has been widely employed in optoelectronic applications. In this work, we applied low-temperature solution-processed In2O3 nanocrystalline film as an electron selective layer (ESL) in perovskite solar cells (PSCs) for the first time. By taking advantages of good optical and electrical properties of In2O3 such as high mobility, wide band gap, and high transmittance, we obtained In2O3-based PSCs with a good efficiency exceeding 13% after optimizing the concentration of the precursor solution and the annealing temperature. Furthermore, to enhance the performance of the In2O3-based PSCs, a phenyl-C61-butyric acid methyl ester (PCBM) layer was introduced to modify the surface of the In2O3 film. The PCBM film could fill up the pinholes or cracks along In2O3 grain boundaries to passivate the defects and make the ESL extremely compact and uniform, which is conducive to suppressing the charge recombination. As a result, the efficiency of the In2O3-based PSC was improved to 14.83% accompanied with VOC, JSC, and FF being 1.08 V, 20.06 mA cm–2, and 0.685, respectively.
研究领域:
材料科学
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光电子学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Jundie Hu,Tingyu Yang,Junjie Chen,Xiaogang Yang,Jiafu Qu,Yahui Cai
Hydrogen peroxide (H 2 O 2 ) is a significant green oxidant for environment and new energy, especially for Fenton-like system. Onsite production and sustainable consumption of H 2 O 2 are the two critical challenges. Here, a fantastic 2D/1D hierarchical layered ZnIn 2 S 4 /TiO 2 heterojunction is reported as an efficient catalyst for in- situ H 2 O 2 production via 2-electrons oxygen reduction (ORR) process and be rapidly activated to high concentration hydroxyl radical (•OH) for water purification under visible light irradiation. The high-quality catalyst enables superior H 2 O 2 production rate of 1530.59 μmol h −1 g −1 with an external quantum efficiency of 10.39% illuminated at 400 nm, is much higher than that of reported photocatalysts. The bimetallic sulfide ZnIn 2 S 4 can effectively promote the activation of H 2 O 2 due to the unsaturation of sulfur atoms, so that the wastewater containing tetracycline (50 ppm) can be degraded by 90% only within 60 min by ZnIn 2 S 4 /TiO 2 via this cascade reaction. This work provides a novel strategy and ZnIn 2 S 4 -based catalyst for photocatalytic Fenton-like reaction.
研究领域:
环境科学
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材料科学
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化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2021
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IF 5.816
Hairus Abdullah,Riski Titian Ginting,Refi Ikhtiari,Noto Susanto Gultom,Hardy Shuwanto,Dong-Hau Kuo
Configurational entropy composites of In-doped Zn(O,S)/Zn-doped In(OH) 3-x S x has been synthesized with a one-step hydrothermal method and carefully characterized with XRD , XPS , SEM, TEM, DRS , PL , EIS , TPC , CV , and MS analyses. The composites were prepared with different sulfur amounts to obtain the optimum performance of visible-light photocatalytic HER . The primary phases of ZnS and In(OH) 3 were formed after the hydrothermal process. However, the results indicated In and O were doped into ZnS lattice and induced lower bandgap values (~2.71–2.84 eV) which are active in visible-light illumination. Simultaneously, the excess Zn and S were also doped to In(OH) 3 with lower bandgap values (~3.38–4.63 eV). The variation of bandgap values is due to the hybridization of In 5s5p to Zn 4s4p and O 2p to S 3p orbitals. As a result, In-doped Zn(O,S) and Zn-doped In(OH) 3-x S x will be a visible-light active material for photoreaction and a favorable phase for electron transfer , respectively. Furthermore, it is also related to a possible antisite-defect formation with I n Z n + to help the electron trapping and enhance the photocarrier separation, leading to an efficient photocatalytic activity . ZI-S1 with additional 5-mmol thioacetamide was found as the catalyst with the highest HER performance which achieved 730 μmol/g·h under visible-light illumination. A plausible photocatalytic HER mechanism is discussed and proposed in this work.
研究领域:
材料科学
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化学
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DOI
高影响因子
Materials Research Express
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2021
·Vol. 8
·期 8
·085002
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IF 1.62
Xiangming Liu,Xiaoshi Peng,Tao Xu,Yulong Li,Huiyue Wei,Zanyang Guan,Feng Wang
Ternary Ag-In-S and quaternary Ag-In-Zn-S nanoparticles with different ratio of Ag/In/Zn/S are synthesized. The incorporation of Zn into Ag-In-S nanoparticles leads to the increase in the optical bandgap and the blue shift of photoluminescence (PL). The optical properties of these nanoparticles are significantly dependent on the chemical composition of nanoparticles. Time-resolved PL spectroscopy in nanosecond time regime is used to study the recombination processes of carriers, which involve the surface states and intrinsic crystallographic defects. These measurements support the donor-acceptor model, in which the PL is achieved by radiative recombination of the localized electron and hole.
研究领域:
材料科学
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光学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Youzhi Yang,Shuang Li,Di Liu,Siyuan Guo,Zhijun Liang,Kaikai Ba,Yanhong Lin,Tengfeng Xie
So far, for photoelectric metal oxide semiconductor gas sensors, it is a huge bottleneck to achieve high response performance and low detection limit of formaldehyde at room temperature. This work introduced the synthesis of cauliflower-like graphene-modified In-doped ZnO (GR/In-ZnO) composites via a facile one-pot method with a large comparative surface area for low-concentration formaldehyde sensing at room temperature. GR/In-ZnO-300 showed the highest response to 10 ppm formaldehyde, up to 1891%, which was 12 times that of In-ZnO-300. In addition, the theoretical detection limit of GR/In-ZnO-300 was as low as 13 ppb, and the response at this concentration was 137%. Through the characterization of Surface Photovoltage (SPV), Transient Photovoltage (TPV), Surface Photocurrent (SPC), X-ray Photoelectron Spectroscopy (XPS), and nitrogen gas adsorption isotherms , good formaldehyde sensing performance of GR/In-ZnO-300 was attributed to the excellent separation and transmission capacity of photogenerated carriers, the high specific surface area (109.2 m 2 /g), and abundant oxygen defects on the surface. This work provides a feasible strategy for the design of low-concentration formaldehyde sensing materials with a rapid response at room temperature.
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
Journal of Materials Chemistry C
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2023
·Vol. 11
·期 5
·1754-1763
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IF 6.4
Yang Xu,Gengping Wan,Lingling Ma,Ying Zhang,Yanran Su,Disheng Liu,Guizhen Wang
With the explosive development of modern military detection technology, stealth compatibility for materials with both outstanding microwave absorption (MA) and low infrared emissivity is urgently needed. In this paper, indium tin oxide (ITO) nanoparticles with high-efficiency MA and infrared stealth properties were successfully prepared by a steerable method using metal chloride salts as indium and tin sources, and the influence of tin proportion on their structure and properties was discussed. The prepared ITO nanoparticles possessing abundant carriers and defects are beneficial to construct a suitable conductive network, and the polarization process is enhanced by the existence of homogeneous and heterogeneous interfaces, so that strong absorption is generated. Remarkably, the obtained ITO with a single dielectric loss type can realize an effective absorption bandwidth (EAB) of 4.88 GHz with a matching thickness of 2.8 mm. In addition, ITO-5 has the lowest infrared emissivity (0.62) in the range of 3–14 μm, while ITO-10 exhibits the best infrared/radar compatible stealth effect. The lowest reflection loss and the widest EAB for ITO-10 are respectively −20.07 dB and 3.83 GHz, while the infrared emissivity is 0.64. Therefore, ITO shows a broad application prospect in anti-detection, and provides an option for multispectral compatible stealth materials.
研究领域:
材料科学
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军事技术
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DOI
高影响因子
FUEL
·
2023
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IF 7.4
Yunfei Zhang,Xilun Wang,Yi Shen
The challenge in the electrochemical reduction of levulinic acid (LA) lies in designing highly selective, energy-efficient, and non-precious-metal electrocatalysts that minimize the competitive hydrogen evolution reaction during LA conversion. Herein, we reported a facile pulsed electrodeposition strategy to fabricate bimetallic electrocatalysts with different combinations of lead (Pb), indium (In), tin, and cadmium supported by free-standing carbon felts (CFs). The as-prepared bimetallic self-supporting electrodes were examined for the electrochemical hydrogenation (ECH) of LA. The resulting InPb/CF electrocatalysts showed superior performance among the bimetallic catalysts. In addition, it was demonstrated that the catalytic performance of bimetallic samples was better than that of the corresponding monometallic samples. Notably, the In 72.4 Pb 27.6 /CF exhibited the best performance for ECH of LA, leading to 86.1 % of LA conversion, 99.7 % of selectivity towards valeric acid and 60.8 % of Faradaic efficiency at −1.5 V vs RHE. The excellent performance is mainly attributed to the modification of the electronic structures by the ligand and strain effects. Meanwhile, the relatively high electrochemically active surface area and the low charge transfer resistance are also conducive to improving the catalytic performance.
研究领域:
材料科学
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电化学
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DOI
高影响因子
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