ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Qian Zhou,Baibai Liu,Yu Chen,Danqing Ma,Xiao Han,Dongmei He,Zhengfu Zhang,Hua Yang,Liming Ding,Jing Feng,Jianhong Yi,Cong Chen,Jiangzhao Chen
The defects from functional layers and interface, the agglomeration of SnO 2 nanoparticles (NPs), and poor perovskite crystallization are the main barrier to further heightening the power conversion efficiency (PCE) and stability of regular perovskite solar cells. Here, a bottom-up multilayer manipulation strategy by pre-embedding multisite racemic DL-cysteine hydrochloride monohydrate (DLCH) into the SnO 2 electron transport layer (ETL) is reported. The positively and negatively charged defects from ETL, perovskite layer and their interface can be passivated through the synergistic effect of the ─SH, ─COOH, ─NH 3 + , and Cl − groups in DLCH. The synergy of multiple functional groups and multiple chemical bonds enables bottom-up cross-layer passivation, which minimizes bulk and interfacial nonradiative recombination losses. Furthermore, the multifunctional DLCH plays a role in inhibiting the agglomeration of SnO 2 NPs, managing photons, relieving interfacial tensile stress, and manipulating perovskite crystallization. Benefiting from the above advantages, the DLCH-incorporating device delivers a PCE of 24.01%, which is much higher than the 21.61% of the control device. Moreover, the DLCH-modified devices demonstrate inviting thermal and ambient stabilities by maintaining 93% of the initial efficiency after aging at 65 °C for 1800 h and 95% of the original PCE after aging under a relative humidity of 20–25% for 2000 h.
研究领域:
材料科学
·
能源科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Solar RRL
·
2024
·
IF 6
Shihui Zhu,Teng Zhang,Wenwen Liu,Baohua Zhao,Ziming Chen,Xinyu Sun,Tailin Wang,Yanli Chen,Heyuan Liu,Qifan Xue,Xiyou Li
Although SnO 2 has been widely used as the electron transport material (ETM) of the perovskite solar cells (PSCs), the energy level mismatch at the SnO 2 /CsPbBr 3 buried interface is as high as 1 eV, which is disastrous for the CsPbBr 3 -based PSCs. Herein, a buffer layer of metal sulfide (CdS, ZnS) is introduced to solve this problem. The power conversion efficiency (PCE) of CsPbBr 3 PSCs has been increased from 8.16% to 9.48% for ZnS-treated SnO 2 (ZnS-SnO 2 ), and a champion efficiency of 10.61% has been achieved in CdS-treated SnO 2 (CdS-SnO 2 ) devices. Aside from the reduced energy loss, the mobility of the SnO 2 ETM has been greatly enhanced after the metal sulfide treatment. The CdS-SnO 2 devices also enjoy the benefits of reduced defect density and speeded carrier extraction, contributing to an almost 30% performance enhancement. This 10.61% PCE is among the highly efficient CsPbBr 3 -based PSCs reported to date. Finally, CdS-SnO 2 devices survive a harsh damp heat test (120 °C with a relative humidity of 50%) for a month with less than 15% efficiency loss, demonstrating the superior stability of our CsPbBr 3 PSCs.
研究领域:
材料科学
·
能源技术
·
光电转换
✓ 已验证
产品关联
DOI
高影响因子
Carbon Neutralization
·
2025
·Vol. 4
·期 6
·e70080
·
IF 12
Jixin Shi,Peipei Zhang,Fawang Liu,Tiantian Su,Jingsan Xu,Chao Lin,Xiaopeng Li,Wei Luo
The development of advanced catalytic technologies for the combustion of low-concentration methane is crucial for minimizing unburned CH 4 emissions, consequently improving the eco-efficiency of natural gas vehicles and power plants. The integration of effective catalysts into existing systems with minimal modifications is of paramount importance. Porous ceramic composites offer a promising alternative to traditional powder catalysts due to their high surface area, excellent thermal stability, adjustable porosity, and prolonged catalytic durability. This study introduces a trace Pd–incorporated SnO 2 porous ceramic catalyst (Pd/SnO 2 ) fabricated using the spark plasma sintering (SPS) technique. The synthesis process uses a NaCl salt template to create a porous structure and graphite to improve Pd loading and dispersion on the SnO 2 surface. An optimized 10 wt.% graphite-decorated Pd/SnO 2 porous ceramic catalyst, containing a trace Pd loading of 0.17 wt.%, achieved a low T 90 of 427°C during methane reforming tests and maintained stable catalytic performance after multiple temperature cycling and over 900 min of continuous operation. Enhanced activity stems from two synergies: first, graphite-mediated uniform PdO dispersion boosting active site accessibility and second, PdO–SnO 2 interfacial charge transfer generating oxygen-deficient sites, accelerating CH 4 dissociation and stabilizing Pd 2+ against deactivation. These findings highlight the potential of this approach for use in the development of durable and efficient ceramic composite–based catalysts for environmental applications.
研究领域:
催化化学
·
环境工程
·
材料科学
·
陶瓷复合材料
·
能源技术
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Zhihua Zhao,Bingbing Wang,Zhiyi Zhang,Huiqin Li,Jingjing Tang,Peijuan Wu,Lan Wu,Qilin Zou
Background Triethylamine (TEA), a volatile chemical marker released during seafood spoilage, not only indicates food freshness but also poses respiratory hazards, underscoring the need for reliable gas sensing. Current TEA detection technologies are often constrained by high operating temperatures, limited sensitivity in the ppb range, and sluggish response/recovery behavior, leading to excessive energy use and restricted real-world applicability. To overcome these limitations, this study focuses on developing a room-temperature TEA sensor capable of ultrasensitive and rapid detection, supporting both energy-efficient operation and sustainable monitoring solutions. Results We successfully synthesized SnO 2 hollow spheres and La 2 (WO 4 ) 3 nanoparticles via a solvothermal method and constructed La 2 (WO 4 ) 3 /SnO 2 (LSO) nanocomposites with the aim of developing a highly efficient sensor for triethylamine (TEA) detection. The results show that the LSO exhibited a notable enhancement in TEA gas sensing properties at room temperature. Specifically, it was observed that the LSO-4 heterojunctions exhibited response to 100 ppm TEA could reach to 5.24, which was approximately 3.14 times better than that of pure SnO 2 . Density functional theory (DFT) calculations confirmed the enhanced TEA adsorption capacity of the LSO heterojunction, while clarifying the underlying electron transfer mechanism. Practical application tests showed that the sensor could effectively detect TEA, demonstrating excellent sensitivity, stability, and repeatability, thereby providing feasibility for its application in monitoring of harmful gases in the environment. Significance This work reports the first example of fabrication La 2 (WO 4 ) 3 /SnO 2 heterojunctions for gas sensors. The sensors can detect ppb level TEA gas at room temperature, and meanwhile, the sensors have the advantage of ultrafast response and recovery, which is not normal for the room temperature gas sensor, which thus support their practical application in the field of food quality monitoring and harmful gas control.
研究领域:
材料科学
·
气体传感技术
·
纳米材料
·
环境监测
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Jingnan Jiao,Yongjie Zhang,Hong Zhang,Wenjiang Han,Tiantian Zhou,Yanfeng Sun,Shujie Pang,Shiwei Wang
The efficient detection of ethanol is crucial for environmental monitoring and human health. However, metal oxide semiconductors (MOS) such as CdSnO 3 often suffer from low sensitivity, poor selectivity, and high detection limits. Doping and heterostructure construction have been demonstrated as effective strategies to enhance the gas-sensing properties of MOS. In this work, a carbon-modified SnO 2 /CdSnO 3 heterostructure was synthesized by a one-step glucose-assisted hydrothermal method. Among them, CSO@C*6 based sensor exhibits the highest response toward ethanol gas. Its response value to 100 ppm ethanol is 47.52 at optimal working temperature of 237.5 ℃, 5.7 times higher than that of pure CdSnO 3 (8.27). Besides high response, the CSO@C*6 based sensor represents excellent selectivity, rapid response speed (1 s) and extremely low theoretical LOD to ethanol (2.81 ppb). The ethanol sensing performance of the CSO@C*6 was significantly enhanced, mainly due to (1) its high specific surface area, (2) carbon-induced oxygen enrichment effect and its hydrophobicity, and (3) the formation of n-n heterojunction. This work proposes a facile approach for synthesizing heterostructures and demonstrates the potential of carbon modification in improving gas-sensing performance.
研究领域:
材料科学
·
传感器技术
·
纳米材料
·
半导体物理
·
环境监测
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Ou Wang,Heyu Wang,Yu Tang,Zhiheng Ma,Bao-Li An,Yongmei Zhao,Xiaohong Wang,Jiaqiang Xu
Accurate detection of acetone (C3H6O) is essential for both environmental monitoring and noninvasive diabetes diagnosis. High-entropy alloys (HEAs) have been demonstrated as effective catalysts to replace noble metals for enhancing the gas-sensing performance of semiconductor metal oxides. However, HEAs tend to agglomerate at high temperatures, which severely limits their long-term stability and performance. To address this issue, a PtFeCoNiCuSn HEA was developed as a functional sensitizer for SnO2-based C3H6O sensors. The existence of Sn in the HEA structure enhances the interaction of HEA with SnO2 and prevents agglomeration under high-temperature conditions (≥300 °C), leading to improved stability and catalytic activity for C3H6O detection. The PtFeCoNiCuSn-SnO2-300 sensor exhibited increased sensitivity than its Sn-free HEA counterpart, along with shorter response and recovery times (6.5 s/10.5 s) at a working temperature of 230 °C, a clear response (Ra/Rg = 4.59@2 ppm), and a low detection limit down to 4 ppb for C3H6O. Moreover, it demonstrated stable long-term stability, with no significant response degradation (σ = 0.056) observed over a 63-day continuous test. The enhanced performance is attributed to the synergistic effects of the HEA’s multielement composition and strong metal–support interaction, which strengthens electronic interaction and the activation of surface oxygen species. This study provides a framework for enhancing the interaction between HEAs and semiconductor metal oxides to further improve the gas-sensing properties of the latter.
研究领域:
材料科学
·
气体传感技术
·
纳米催化
·
环境监测
·
糖尿病诊断
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2016
·
IF 4.758
Fangming Deng,Yigang He,Guolong Shi,Bing Li,Xiang Wu
Gaseous sensor system was developed for the detection of sulfur hexafluoride vapor based on its cataluminescence (CTL) emission by using coral-like Zn-doped SnO 2 composite. The test architecture, experiment characteristics and optimal conditions were studied in detail under optimized experiment conditions. Results showed that the gas sensor system covered a linear detection range from 8 mg/L to 5600 mg/L (R = 0.9963, n = 7) with a detection limit of 6.2 mg/L (S/N = 3), which was below the standard permitted concentration. The sensor showed a rapid response of 2 s and a recovery time of 30 s, respectively. Moreover, pattern recognition method was used to test the recognizable performance of this sensor, which has found that analyte can be distinguished clearly. As sensing materials for a CTL gas sensor, this coral-like Zn-doped SnO 2 demonstrates excellent CTL behavior (that is, high sensitivity, superior selectivity to sulfur hexafluoride compared with other eleven kinds of common volatile organic compounds (VOCs) as well as a fast response and recovery). The excellent sensing properties including improved sensitivity, selectivity and stability proved this sensor to be a promising candidate for detecting gas contaminants.
研究领域:
材料科学
·
化学工程
·
环境科学
·
传感器技术
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2020
·Vol. 167
·期 10
·100522
·
IF 3.721
Xiaojian Feng,Shouzhen Ren,Ke Li,Ruochen Zhang,Jiafu Chen,Yuehua Li,Yingqiao Jiang,Zhangxing He,Jing Zhu,Wei Meng,Lei Dai,Huizhu Zhou,Ling Wang
Herein, ultra-tiny Sb-doped SnO2 nanoparticles were prepared using co-precipitation as superior catalyst for vanadium redox reactions. Different concentrations of Sb in range of 2%, 5%, and 10% were doped in lattice structure of SnO2. The size of nanoparticles decreased, as doping concentration increased. Sb doping also decreased the crystallinity of SnO2, producing structural defects. It is notable that Sb-doped SnO2 showed greatly improved conductivity. However, excessive Sb doping reduced conductivity of SnO2. Sb-doped SnO2 exhibited better electrocatalysis for V3+/V2+ and VO2+/VO2+ reactions. It benefits from Sb-doped SnO2 with smaller size, more structural defects, and higher conductivity, increasing active sites and electron transfer rate for vanadium redox reactions. SnO2/Sb-5% showed the best electrocatalysis. SnO2/Sb-5% was used to modify graphite felt, such that it had better electrochemical performance for vanadium redox reactions. A cell using SnO2/Sb-5% improved electrolyte usage and discharge capacity retention at 50 mA cm−2 for 50 cycles. SnO2/Sb-5% also efficiently reduced electrochemical polarization of cell. The cell using SnO2/Sb-5% had higher energy efficiency compared to pristine cell. At 150 mA cm−2, the energy efficiency of modified cell increased by 9.2% compared with pristine cell (57.3%). Therefore, Sb-doped SnO2 can be used as a promising catalyst for vanadium redox reactions.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Bing Li,Jing Wang,Zulai Cao,Peng Zhang,Jinbao Zhao
The manganese metal ions and other transition metal ions in lithium manganite cathode materials will be dissolved into the electrolyte during cycling and storage at charged state, leading to severe capacity fading. Herein, the SnO 2 -coated Li 1.2 Mn 0.54 Co 0.13 Ni 0.13 O 2 cathode material is prepared successfully by a simple organic liquid-phase method. The data of inductive coupled plasma-atomic emission spectroscopy and ex-XRD suggest that the coating layer can effectively suppress the dissolution of metal ions , which maintains the stability of main structure. The value of the charge transfer impedance is 35.49 Ω cm 2 for LLMO-Sn1 after 50 cycles, while the LLMO is 123.30 Ω cm 2 . The LLMO-Sn1 has the highest discharge capacity of 214.0 mAh·g −1 after 150 cycles in half cell and exhibits the capacity retention of 86.8% after 150 cycles in full-cell. The decomposition reaction peak of LLMO-Sn1 appears at 250.1 °C.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2015
·Vol. 182
·期 11
·2001-2007
·
IF 3.741
Ma Hong-Fei,Chen Ting-Ting,Luo Yu,Kong Fen-Ying,Fan Da-He,Fang Hai-Lin,Wang Wei
Novel nanocomposites were prepared from graphene oxide (GO) and octahedral tin dioxide (SnO 2 ) through a facile process that included synthesis of octahedral SnO 2 and the reduction of GO with ascorbic acid. The morphology and structure of the nanocomposites were characterized by UV–vis spectroscopy, transmission electron microscopy, and Raman spectroscopy. The nanocomposites were placed on a glassy carbon electrode where they displayed excellent performance in terms of differential pulse voltammetric determination of dopamine (DA). This is attributed to (a) the synergetic interactions between reduced graphene oxide (r-GO) and octahedral SnO 2 , and (b) the presence of a large number of active sites on the nanocomposites surface. The sensor responds to DA in the concentration range of 0.08 to 30 μM, with a 6 nM detection limit if operated at 0.24 V (vs. Ag/AgCl). The modified electrode also widely suppresses the background current resulting from excess ascorbic acid and uric acids. The method was applied to the determination of DA in spiked human urine and gave satisfactory results, with recoveries in the range from 96.4 to 98.2 %.
Green and facile synthesis of reduced graphene oxide-octahedral SnO 2 (r-GO-SnO 2 ) nanocomposites for the sensitive and selective electrochemical detection of dopamine.
研究领域:
分析化学
·
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF NUCLEAR MATERIALS
·
2021
·
IF 2.936
Jing Wang,Chenchen Niu,Kaiwen Hu,Xiujian Zhao,Kai Xu
Rhenium (Re), a non-radioactive surrogate for technetium (Tc), was incorporated into the lattice of SnO 2 by reductive co-precipitation process at room temperature, and Re volatility from Re(SnO 2 ) under different conditions (in air and N 2 and with glass frit) at elevated temperatures was carefully investigated. Re began to evaporate from Re(SnO 2 ) both in air and N 2 at 400 °C, while Re exhibited a faster volatilization in air than in N 2 , as all Re was gone at 1200 °C in air, but ∼40% of Re still remained at 1200 °C in N 2 . Additionally, Re did not volatilize from Re(SnO 2 )-containing glass frit until 800 °C and only ∼15% of Re volatilized at 1200 °C, suggesting the loss of Re decreased by ∼30% points through incorporation of Re into SnO 2 before vitrification. The analysis of Re valence transition revealed that the reduced Re 4+ was easily oxidized to volatile Re 7+ in air, but in N 2 , Re 4+ disproportionated to form Re 7+ and the lower valence states of Re at temperatures from 600 °C to 1000 °C. In Re(SnO 2 )-containing glass frit, the formation of NaReO 4 during vitrification inhibited Re 7+ volatilization before 800 °C, while the presence of Re 4+ in the glass melt enhanced Re retention at temperature above 800 °C.
研究领域:
材料科学
·
核化学
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 17
·10636-10643
·
IF 10.733
Hongri Liu,Zhiliang Chen,Haibing Wang,Feihong Ye,Junjie Ma,Xiaolu Zheng,Pengbin Gui,Liangbin Xiong,Jian Wen,Guojia Fang
The electron transport layer (ETL) is a critical component in planar single junction or tandem perovskite solar cells (PSCs), dominating the separation and electron extraction of charge carriers. Herein, we introduce a facile route to synthesize a SnO2 quantum dot (QD) colloidal solution at room temperature using an alcohol-based solvent with the additive of deionized-water. A superior homogeneous ETL is obtained by spin coating of the QD colloidal solution with post-deposition annealing. Compared to the ETL prepared with the SnCl2·2H2O anhydrous alcohol solution, the champion power conversion efficiency of PSCs deposited on the SnO2 QD based ETL is raised to 20.1% from 16.5%. The better performance is attributed to the excellent optical and electronic properties of the SnO2 QD based ETL. Experimental analyses reveal that the SnO2 QD based ETL enhances electron extraction and suppresses charge recombination, leading to improvement of solar cell performance. The appropriate concentration of the SnO2 QD based solution is explored and the appropriate ratio of anhydrous alcohol to deionized water of the SnO2 colloidal solution is obtained. Our results show the great potential of low temperature synthesized SnO2 QD films for application as ETLs or interconnecting buffer layers for future highly efficient and reproducible low-temperature processed tandem PSCs.
研究领域:
材料科学
·
能源技术
·
纳米科技
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）