INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Jiawei Lin,Niu Sun,Ruonan Yao,Kunjie Liu,Zhongnan Guo,Jing Zhao,Quanlin Liu,Wenxia Yuan
Low-dimensional organic–inorganic metal halides (OIMHs) have been explored as single-component white light emitters for applications in solid-state lighting. Herein, we report a zero-dimensional (0D) In-based OIMH (TMPDA)[InCl5(H2O)] (TMPDA = N,N,N′,N’-tetramethyl-1,4-phenylenediamine), which crystallizes in the noncentrosymmetric P212121 space group and contains hydrogen bonds between the adjacent [InCl5(H2O)]2– octahedra in structure. It exhibits a large optical band gap (4.10 eV) and dual-band emission under UV light. Spectroscopic analysis and theoretical calculation indicate that the high (404 nm)- and low (513 nm)-energy emissions are attributed to the bound excitons in organic ligands and self-trapped excitons in [InCl5(H2O)]2– units, respectively. It is found that Sb doping in this 0D hybrid provides additional orange (590 nm) emission assigned to the 3P1 → 1S0 triplet radiative recombination. By adjusting the doping level, the emission color can be turned from turquoise to orange, and interestingly, a single-component white-light emission is realized by balancing the high-energy emission from organic ligand, the turquoise emission from [InCl5(H2O)]2–, and the orange one from [SbCl5(H2O)]2–. This work not only provides a new OIMH showing the single-component white light emission but also demonstrates the potential of In-based hybrids with hydrogen bonds for solid-state luminescence.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Jin Li,Zhujun Chen,Xin Li,Bingshuang Li,Pengxuan Wu,Xiaoxi Huang
Indium sulfide-based electrocatalysts often suffer from the reduction of In3+ to In0 species in the electrocatalytic CO2 reduction reaction (CO2RR), and this dynamic transformation leads to undesired hydrogen evolution reaction. Promoting the stability of high-valent In3+ species under operating conditions is a challenging but important task for maintaining their excellent electrocatalytic activity. In this work, In2S3 electrocatalysts with controllable crystallinity are synthesized by a hydrothermal reaction at a tunable temperature. The low-crystalline In2S3-1 exhibits more abundant defective and amorphous/crystalline interface structures compared with the high-crystalline ones, thus endowing the low-crystalline In2S3-1 with a higher formate faradaic efficiency (FEformate) of 91.6% at −1.45 V vs RHE in the H-type cell compared with the high-crystalline In2S3-3 (FEformate = 79.3%). This improved electrocatalytic activity can be attributed to its abundant defect structures and amorphous/crystalline interface structures with robustly high-valent In3+ species under the operating conditions. In situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy results reveal the *OCHO reaction pathway. Density functional theory (DFT) calculations indicate that defective structures, such as sulfur vacancies, play an important role in lowering the energy barrier for the key intermediate *OCHO formation. This work provides important insight into defect engineering to promote CO2RR.
研究领域:
材料科学
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电化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Catalysis
·
2024
·
IF 11.3
Xiaohui Leng,Xin Zhou,Lu Ma,Yonghua Du,Ouwen Peng,Zhongxin Chen,Jinhui Pan,Ming-Yu Qi,Jian-Hui Zheng,Yi-Jun Xu,Kian Ping Loh
Visible light induced oxidative C–C and C–N coupling provides a milder alternative to the current synthetic strategies. However, the photochemical C–C coupling of benzylamine and chromoselective C–C/C–N conversion are not widely reported. Herein, we demonstrate that the introduction of indium vacancies in ZnIn2S4 improves the catalytic activity for C–C coupling of benzylamine and imparts a strong chromoselectivity for C–C or C–N coupled products. A high C–C selectivity of ∼80% is achieved with a benzylamine conversion of ∼80%. Mechanistic studies unveil the switchable reaction routes between kinetically favored C–C coupling and thermodynamically favored C–N coupling under specific illumination conditions.
研究领域:
化学
·
材料科学
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2025
·
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
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2024
·
IF 4.1
Chengxu Lin,Chenyu Li,Rui Liu,Xuning Zhang,Xingyue Liu,Bo Sun,Tielin Shi,Zhiyong Liu,Guanglan Liao
The perovskite scintillators have been extensively studied recently for their merits of tunable emission spectra and simple preparation processes. However, the practical applications of perovskite scintillator-based X-ray image sensor are still impeded by inadequate radioluminescence, poor environmental stability, and low imaging resolution. Herein, we demonstrate a scalable co-firing method to fabricate high-quality lead-free Cs 3 Cu 2 I 5 perovskite scintillator and an Indium (In)-doping strategy is introduced to enhance its radioluminescence performance at the same time. The In-doped Cs 3 Cu 2 I 5 obtains a high PLQY of 77.9% and a relative light output of 53372 ph/MeV, which are 0.34 and 1.08 times higher than those of the undoped counterpart, respectively. The X-ray detection limit of the In:Cs 3 Cu 2 I 5 can reach 150.55 nGy air /s, 36.53 times lower than the requirement for X-ray medical diagnosis. The synthesized scintillator also shows superior stability under continuous high dose X-ray irradiation of 6800 μGy air /s for 120 minutes, maintaining 95% of its initial radioluminescence intensity. Furthermore, a large-area (300 cm 2 ) flexible perovskite scintillator film is prepared, which owns a much competitive resolution of 10 lp/mm and less distortion in X-ray imaging. This work provides a practical path for the wide application of perovskite scintillator in the field of X-ray detection and imaging in near future.
研究领域:
材料科学
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医学影像
·
放射学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Hao Wang,Chun Yang,Xiaoyan Yu,Mingrui Wang,Runze Yang,Xiaowa Nie,Ben Hang Yin,Alex C.K. Yip,Chunshan Song,Guanghui Zhang,Xinwen Guo
Indium oxide (In 2 O 3 ), as a promising candidate for CO 2 hydrogenation to C 1 products, often suffers from sintering and activity decline, closely related to the undesirable structural evolution under reaction conditions. Based on the comprehension of the dynamic evolution, this study presents an efficient strategy to alleviate the agglomeration of In 2 O 3 nanoparticles by the surface decoration with highly dispersed silica species (SiO x ). Various structural characterizations combined with density functional theory calculations demonstrated that the sintering resulted from the over-reduction, while the enhanced stability originated from the anchoring effect of highly stable In–OSi bonds, which hinders the substantial formation of metallic In (In 0 ) and the subsequent agglomeration. 0.6Si/In 2 O 3 exhibited CO 2 conversion rate of 10.0 mmol g −1 h −1 at steady state vs. 3.5 mmol g −1 h −1 on In 2 O 3 in CO 2 hydrogenation. Enhanced steady-state activity was also achieved on Pd-modified catalysts. Compared to the traditional Pd/In 2 O 3 catalyst, the methanol production rate of Pd catalyst supported on 0.6Si/In 2 O 3 was enhanced by 23%, showing the potential of In 2 O 3 modified by SiO x in serving as a platform material. This work provides a promising method to design new In 2 O 3 -based catalysts with improved activity and stability in CO 2 hydrogenation.
研究领域:
催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 46
·e202404170
·
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
·
化学
✓ 已验证
产品关联
DOI
高影响因子
MICROELECTRONIC ENGINEERING
·
2024
·
IF 2.6
Wenwu Li,Caifang Gao,Xifeng Li,Jiayan Yang,Jianhua Zhang,Junhao Chu
Device stability is one of the key parameters for transistor applications. To improve the stability of Indium oxide (In 2 O 3 ) after a long-time gate bias, a synthetic solution of hafnium chloride (HfCl 4 ) and indium nitrate (In(NO 3 ) 3 ∙xH 2 O) reagents were used to obtain 0% to 5-at.% Hf doped In 2 O 3 thin-film transistors. With the increase of Hf doping concentration, oxygen vacancies and residual hydroxyl groups continue to decrease, suppressing the carrier concentration and influencing the trap state density of In 2 O 3 . The sub-threshold slope (SS) 0.78 V·dec −1 for the undoped In 2 O 3 transistor in this work is a typical value. When the dopant dose is up to 5-at.%, SS decreases to 0.32 V·dec −1 . According to the proportional relationship between SS and the density of trap states, it shows that the density of trap states in the dielectric layer and the semiconductor/dielectric interface SS is greatly reduced after 5-at.% Hf doping. The probability of the charge being trapped is dropped as well. At the same time, under the doping of Hf, the transistor exhibits a very small threshold voltage shift. Especially at the dopant dose of 5-at.%, the transfer characteristic curve hardly shifts. This work demonstrates an In 2 O 3 transistor with high bias stability by doping method.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiaopeng Zhou,Qingshi Hu,Yuhua Wang
Indium phosphide QDs have emerged as a promising candidate for the next generation optoelectronic applications. However, the optical performance of InP QDs still lags behind that of CdSe-based QDs, partly due to surface traps induced by the lattice mismatch between InP and ZnSe. Herein, based on (DMA) 3 P, we designed an alloyed inner-shell structure of InP/Zn(Mg)Se/ZnS QDs. The dual-function mechanism of the Zn(Mg)Se was revealed, which effectively mitigates the lattice mismatch between the core and shell to reduce the emission of surface defect states, resulting in narrowed emission peaks (FWHM ∼ 36 nm). While the increased band gap of Zn(Mg)Se confines the exciton delocalization from core to shell, thereby reducing the non-radiative relaxation of carriers at the defect states in the shell. This discovery provides a strategy to improve the color purity and luminescence efficiency of InP QDs. By combining blue LED chips with InP/Zn(Mg)Se/ZnS, a white light-emitting diode (QLED) with a high luminous efficiency of 63 lm/W was obtained. Furthermore, the realization of QDs arrays with 10 μm pixel dots by inkjet printing technology and the fabrication of white-light emitting Micro-LEDs by combining QDs films with Micro-LED chip arrays demonstrate the potential application of InP QDs in high-efficiency optoelectronic devices (LEDs/micro-LEDs).
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
WASTE MANAGEMENT
·
2019
·
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
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xingyu Kang,Haibo Yu,Xiao Ma,Eryang Shang,Hong Chen,Huizhang Zhao,Jiawei Zhang,Rong Tan,Dong Wang,Hairui Fang
An efficient portable gas sensor was developed to meet the needs of air quality monitoring, for the detection of nitrogen dioxide (NO 2 ). In this study, coaxial electrospinning technology was used to synthesize porous nanofibers of indium oxide (In 2 O 3 ) composite zinc oxide (ZnO), which are recognized as special semiconductor ceramic materials. The best sample (NFs.1–6) consists of a nanoparticle-based structure with interconnected pores, in contrast to the more compact, tightly bonded nanofibers. This porous structure enhances gas adsorption capacity, improving the sensor’s performance. At 200 °C, the synthesized In 2 O 3 @ZnO (NFs.1–6) nanofibers exhibited a high response value of 171.25 and a fast response time of 5 s to 100 parts per million (ppm) NO 2 . The excellent characteristic is attributed to its uniform structure and n-n homojunction, making the response values 38 times and 98 times that of pure ZnO and pure In 2 O 3 , respectively. Building on the research findings, a smart mask was developed that incorporates the nanofiber sensor to monitor NO 2 concentrations in the air, offering an innovative approach to wearable gas sensor technology by semiconductor ceramic materials.
研究领域:
材料科学
·
环境科学
·
传感器技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Xin Wang,Zhurong Liang,Xueqing Xu,Nan Wang,Jun Fang,Junxia Wang,Gang Xu
Highly Cu-rich copper indium sulfide (CuInS 2 , CIS) quantum dots were synthesized utilizing copper chloride (CuCl) and indium acetate (In(Ac) 3 ) as metal cation precursors, combined with n-dodecanethiol (DDT) as a coordinating sulfur source and solvent. With excess of In(Ac) 3 , i.e. with Cu/In ratios of 1/4, together with Zn 2+ ions post-treatment, a relatively high photoluminescence quantum yield (QY) of ∼73% with long average lifetime of ∼359 ns has been obtained, which is proposed to be attributed to the Cu-rich defect states in the CIS nanocrystals (NCs) nuclei. Meanwhile, the formation of In-rich CIS–ZnS alloy, i.e. Zn–Cu–In–S (ZCIS) with high density of Cu vacancies, combined with the surface passivation of ZnS overlay resulted in a high QY. Finally, the formation mechanism of the ZCIS/ZnS with Cu-rich nuclei has been proposed.
研究领域:
材料科学
·
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）