Advanced Energy Materials
·
2025
·
IF 26
Chunjie Huang,Zhenghao Liu,Shiyu Jiang,Xiangjin Du,Chengyu Tan,Xinru Qin,Yuqi Cui,Rui Zhang,Yiming Li,Fubo Tian,Jiangjian Shi,Huijue Wu,Yanhong Luo,Dongmei Li,Qingbo Meng
Large area, dense, and uniform SnO 2 films with fewer defects are essential for high-quality perovskite films and efficient n-i-p typed perovskite modules. In this respect, based on the self-synthesized SnO 2 nanoparticles (NPs) 4,4′-bipyridine is introduced as a multifunctional interface modifier at the SnO 2 /perovskite interface. Both experimental and DFT calculation results reveal that, the incorporation of 4,4′-bipyridine can simultaneously passivate interfacial defects from the SnO 2 surface and perovskite bottom surface. Moreover, it can also facilitate charge carrier transportation. Based on blade-coating technique for large area perovskite modules, this strategy significantly enhances the interfacial quality of large-area SnO 2 films and crystal quality of large-area perovskite layers. As a result, the champion small-area cell (0.076 cm 2 ) presents the efficiency of 25.75% while the minimodule (22.9 cm 2 aperture area) exhibits the efficiency of 23.50% with a certified efficiency of 22.70%. Both small-area devices and modules exhibited excellent operation and thermal stabilities, demonstrating that this interface treatment is a promising approach for large-scale production of high-efficiency perovskite modules.
研究领域:
材料科学
·
纳米技术
·
光伏技术
·
薄膜技术
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Xiaoya Huang,Yan Zhang,Jing Bai,Jinhua Li,Linsen Li,Tingsheng Zhou,Shuai Chen,Jiachen Wang,Mohammadi Rahim,Xiaohong Guan,Baoxue Zhou
N-containing organic wastewater is harmful to human health and ecosystem while its degradation remains a huge challenge for decarburization and denitrification simultaneously. In this paper, we proposed a new photoelectrochemical method of chlorine oxide radicals production to oxidize mixture wastewater of phenol and N-ammonia into N 2 and CO 2 . The chlorine oxide radicals were generated via a rapid reaction of HClO with hydroxyl radicals or chlorine free radicals on a synergistic dual anode, in which hydroxyl radicals and chlorine free radicals generated on WO 3 side, and HClO generated on Sb-SnO 2 side, respectively. Phenol degradation rate on WO 3 -Sb/SnO 2 was 2.54 and 4.79 times than that on WO 3 and Sb/SnO 2 . Meanwhile, N-ammonia removal rate on WO 3 -Sb/SnO 2 was 5.69 and 20 times greater than that on WO 3 and Sb/SnO 2 , respectively. The effects of potential, Cl − concentration and initial pH were examined and the optimal conditions were potential 2.0 V vs Ag/AgCl, 0.05 M NaCl, pH = 5. The free radical quenching experiments and electron-spin resonance (ESR) confirmed that chlorine oxide radicals played an important role in the degradation of N-ammonia and phenol. Reasonable pathways of phenol in the WO 3 -Sb/SnO 2 system were also proposed. This work provides an exhaustive, novel, environmental-friendly photoelectrochemical system for N-containing organic wastewater treatment.
研究领域:
环境科学
·
化工工程
·
废水处理
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2026
·
IF 6.7
Bo Yang,Ziqi Wang,Chuan Luo,Bingqin Lv,Zhengang Zhao
The rapid and accurate detection of carbon monoxide (CO) is essential for environmental safety and human health. In this work, a series of sponge-like porous SnO 2 nanocomposites with varying Pd doping contents (0–5.0 at%) were synthesized via a one-step hydrothermal method. Their CO sensing properties were systematically investigated. The results reveal that Pd is incorporated into the SnO 2 lattice in the form of highly dispersed Pd 2+ species. These species facilitate the formation of a three-dimensional porous network interconnected by SnO 2 nanocrystals of approximately 5 nm in size. Gas sensing tests demonstrate that the sensor with a Pd doping content of 1.0 at% exhibits the highest response value ( R a / R g = 64 ) to 100 ppm CO at an optimal operating temperature of 150 °C, with a fast response time of 7 s and high selectivity to CO. Moreover, this sensor achieves a low detection limit of 1.455 ppm and maintains a detectable response over a 30-day testing period. X-ray photoelectron spectroscopy (XPS) analysis and density functional theory (DFT) calculations reveal that Pd doping not only introduces abundant oxygen vacancies but also activates CO molecules through strong chemisorption (adsorption energy of −1.13 eV), thereby accelerating the surface oxidation reaction kinetics. This structural design, combined with the Pd-induced catalytic enhancement (e.g., oxygen vacancy creation and strong chemisorption), provides a new strategy for developing high-performance low-temperature CO sensors.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2013
·Vol. 68
·期 1
·121-127
·
IF 1.66
Song Chen-lu,Wang Ju,Zeng Meng-long,Zhu Jian-qiang,Liu Yong,Xu Gang,Han Gao-rong
Fluorine-doped TiO 2 thin films featuring columnar structure were prepared on fluorine-doped tin oxide (SnO 2 :F) substrate using a sol–gel method. The F doping ratios were varied in the range of 0–8 %. The effect of [F]/[Ti + F] ratio on the structural, morphological, optical, photocatalytic and low-emissivity properties has been investigated in detail. X-ray diffraction studies revealed that all the composited films are mainly composed of anatase TiO 2 and rutile SnO 2 without other phases. The prepared TiO 2 :F films possessed the columnar morphology with the single layer thickness ranging from 28 to 31 nm. The best photocatalytic activity was obtained for the films with 4 % F doping ratio which is mainly attributed to the highest crystallization and crystallite size. The transmission and hemispherical emissivity of the composite films could still reach approximately 70 % and 0.20, which match the requirements of the Chinese National Standard (GB/T18915.2-2002), promoting the films for the practical applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2020
·Vol. 4
·期 5
·2333-2341
·
IF 5.503
Zhiqiang Gu,Wenli Li,Yuxi Chen,Xiaohong Xia,Hongbo Liu
Here, we report a simple and efficient hydrothermal approach to fabricate microspheres of the SiOx@SnO2@C ternary composite. Since lithiated SnO2 can significantly enhance the electrical conductivity of Si, SnO2 coating was constructed by growing SnO2 derived from hydrolyzed Na2SnO3in situ on the surface of nano silicon. Meanwhile, in the hydrolysis process of Na2SnO3, high amounts of OH− was generated, etching part of Si in SiO32−, which ultimately transformed to SiOx after the addition of citric acid. Compared with Si, the change in the volume of SiOx during the lithiation/delithiation process was smaller. After a simple hydrothermal treatment and subsequent carbonization, both SnO2 and SiOx nanoparticles were assembled into microspheres through Ostwald ripening. Thereby, the microspherical structure of the SiOx@SnO2@C ternary composite was formed, and the Si cores were uniformly embedded in the carbon layer containing SiOx and SnO2 with the carbon layer. Such a unique architecture that combines SiOx, SnO2 and amorphous carbon imparted great electrochemical properties. As a consequence, the SiOx@SnO2@C composite exhibited a reversible capacity of 796 mA h g−1 at a current density of 1 A g−1 even after 300 deep cycles, as well as a rate capacity of 515 mA h g−1 at a high current density of 4 A g−1.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Weishan Qin,Ting Su,Guodong Chai,Xinhong Wang,Weichao Qin,Hongbin Yu
Photoelectrocatalysis is a promising method for removing biorefractory organic pollutants. However, the inefficient utilization of light and electricity by photoanodes and the failure to effectively execute cathode functions typically lead to poor degradation performance. Therefore, in this study, a photoelectrocatalytic (PEC) system coupled with electro-activated persulfate (E-PS) was constructed using a 3D nanostructured PbO 2 /Sb-SnO 2 //blue-TiO 2 //WO 3 bifacial anode and a Mo-CuFeO 2 -modified carbon felt cathode. The results indicate that the bifacial anode could effectively implement electro-assisted photocatalysis on the irradiating side and electrocatalysis on the back side. This significantly accelerated acetaminophen degradation with a synergy index of 48.98 %. Additionally, the PEC/E-PS system was established by combining a bifacial anode with a persulfate-activated cathode, which promoted the efficient utilization of photogenerated electrons and increased the number of active species in the coupled system. Density functional theory calculations confirmed that Mo tended to dope the Fe sites and promote the adsorption of PS on Mo-CuFeO 2 , facilitating the continuous activation of persulfate. In the coupled system, the contribution order of different active species to acetaminophen degradation was h + > OH > SO 4 − > 1 O 2 > O 2 − . Their mutual conversion enabled the PEC/E-PS system to efficiently remove acetaminophen with a relatively high current efficiency (22.69 %) and low energy consumption (0.06 kWh⋅gCOD −1 ). The proposed PEC/E-PS system is an efficient and sustainable method for treating organic contaminants in wastewater.
研究领域:
环境科学
·
电化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Carbon Energy
·
2024
·
IF 19.5
Shengnan He,Hui Wu,Shuang Li,Ke Liu,Yaxiong Yang,Hongge Pan,Xuebin Yu
SnO 2 has been extensively investigated as an anode material for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) due to its high Na/K storage capacity, high abundance, and low toxicity. However, the sluggish reaction kinetics, low electronic conductivity, and large volume changes during charge and discharge hinder the practical applications of SnO 2 -based electrodes for SIBs and PIBs. Engineering rational structures with fast charge/ion transfer and robust stability is important to overcoming these challenges. Herein, S-doped SnO 2 (S–SnO 2 ) quantum dots (QDs) (≈3 nm) encapsulated in an N, S codoped carbon fiber networks (S–SnO 2 –CFN) are rationally fabricated using a sequential freeze-drying, calcination, and S-doping strategy. Experimental analysis and density functional theory calculations reveal that the integration of S–SnO 2 QDs with N, S codoped carbon fiber network remarkably decreases the adsorption energies of Na/K atoms in the interlayer of SnO 2 –CFN, and the S doping can increase the conductivity of SnO 2 , thereby enhancing the ion transfer kinetics. The synergistic interaction between S–SnO 2 QDs and N, S codoped carbon fiber network results in a composite with fast Na + /K + storage and extraordinary long-term cyclability. Specifically, the S–SnO 2 –CFN delivers high rate capacities of 141.0 mAh g −1 at 20 A g −1 in SIBs and 102.8 mAh g −1 at 10 A g −1 in PIBs. Impressively, it delivers ultra-stable sodium storage up to 10,000 cycles at 5 A g −1 and potassium storage up to 5000 cycles at 2 A g −1 . This study provides insights into constructing metal oxide-based carbon fiber network structures for high-performance electrochemical energy storage and conversion devices.
研究领域:
材料科学
·
电化学能源存储
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Songjian Deng,Yi Dai,Yue Situ,Defei Liu,Hong Huang
Electrocatalytic oxidation technology and dimensionally stable anodes are widely used in the field of organic dye wastewater treatment . Rational manipulation of microscopic morphology, surface chemistry, and electrode configuration on DSA is of prime importance to enhance its electrochemical performance in the electrocatalytic degradation of organic pollutants . Herein, a novel Ti/SnO 2 -Sb anode with a microsphere structure composed of nanosheet was prepared by the in-situ hydrothermal method . And this electrode was compared with a control sample prepared by the traditional thermal decomposition method in terms of microscopic morphology, chemical structure , and electrochemical performance in the degradation of methylene blue. Benefiting from the nanosheet structure, small grain size, and higher Sb 2 O 5 content, the electrode prepared by the hydrothermal method had a higher Oxygen Evolution Potential (2.09V), a smaller impedance (8.61Ω), and a larger Electrochemical Active Surface Area. And its removal rate of methylene blue reached 100% while the total organic carbon content reduced by 39.20% within 60 min, which is significantly superior to that of traditional thermal decomposition electrodes. This study highlights that the electrode prepared by single-step hydrothermal process shows more excellent catalytic performance than that by the traditional thermal decomposition process and the hydrothermal method has bright application prospects in DSA for electrocatalytic oxidation.
研究领域:
环境科学
·
电化学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Fei Wu,Zheng-Qing Yang,Wen Sun,Xu Chen,Hui Qi,Li-Da Wang
Ti/SnO2-Sb-Ir electrodes doped with a low Ir content were prepared, and they were used in acidic water electrolysis for the oxygen evolution reaction (OER). The results showed that an IrO2–SnO2 solid solution was formed, and the electrode surface was relatively compact. The doping of IrO2 could significantly improve the electrocatalytic activity and stability of Ti/SnO2-Sb electrode for OER. The electrode modified with only 5 mol % Ir met the needs of acidic water electrolysis. Meanwhile, the performances of the electrode approached that of Ti/IrO2 when Ir content was only 8 mol %, which resulted from the fact that IrO2 doping improved the chemical stability as well as the electrocatalytic activity of the electrode. Moreover, the deactivation behavior of the electrode was investigated as well. It was mainly ascribed to the chemical composition and morphology change induced by continuous dissolution of the metal oxides, which eventually led to the passivation of the Ti substrate.
研究领域:
电化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Miao Lu,Siyuan Zhang,Zhongmei Song,Liang Ma,Haining Liu,Ming Fang,Huifang Zhang,Xiushen Ye,Zhijian Wu
Increased levels of octadecylamine (ODA) and 4-dodecylmorpholine (DMP) in the aqueous, primarily utilized as flotation agents in the worldwide production of potash fertilizer, imperil the stability of ecosystems and the downstream production of high-end chemicals. Nevertheless, there is a dearth of exhaustive studies pertaining to the elimination of ODA and DMP. Herein, the Ti/SnO 2 -Sb/β-PbO 2 anode was fabricated by a thermal decomposition-electrodeposition technique for the electrocatalytic degradation of ODA and DMP. The degradation efficiency of ODA and DMP can achieve complete degradation, reaching 100%, after treatment periods of 10 min and 120 min, respectively. Meanwhile, the TOC removal efficiency of ODA and DMP is up to 85% and 61% at 30 min and 120 min, respectively. In particular, sulphate exhibits inhibitory degradation activity of ODA and DMP in comparison to chloride salt. The recycling and accelerated lifetime tests indicate excellent stability and recyclability of the Ti/SnO 2 -Sb/β-PbO 2 electrode. The mechanism of electrocatalytic degradation involves indirect electrochemical oxidation mediated by free radicals. The primary reactive species responsible for the degradation of DMP and ODA, as determined through scavenger quenching experiments and ESR, are ·OH and Cl·. The degradation of the ODA and DMP commences with the elimination of N element, leading to the formation of the N O 3 - . The carbon chain subsequently undergoes the breakdown. The degradation pathways of ODA and DMP were also proposed based on the GC–MS and H-NMR analyses, respectively. Moreover, the Ti/SnO 2 -Sb/β-PbO 2 anode performed excellently in the removal of ODA and DMP in real samples, TOC removal from ODA and DMP in natural samples was 56% and 52%, respectively, within 180 min. This study provides the first exploration of electrocatalytic degradation mechanisms and pathways of ODA and DMP based on the Ti/SnO 2 -Sb/β-PbO 2 anode.
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Zhen-Kun He,Qiang Sun,Kaiyu Xie,Pai Lu,Zhongning Shi,Ali Reza Kamali
The fabrication of hybrid materials , such as SnO 2 -C, applicable in advanced energy storage systems, often suffers from lack of simplicity, scalability, cost effectiveness and/or sustainability. Therefore, the development of simpler and more efficient technologies for the sustainable production of energy materials with decent performance is highly desirable. In the current investigation, a hybrid nanostructured powder comprising of natural graphite flakes decorated with SnO 2 single crystalline nanorods (NG-SnO 2 ) was synthesized by a facile, rapid and cost effective one-step molten salt method, and characterized by a variety of techniques including X-ray diffraction, Raman spectroscopy , thermal analysis and electron microscopy . A perfect connection was identified between SnO 2 nanorods and few-layers graphite on the surface of flakes. This hybrid material exhibited an excellent electrochemical performance as the anode material for Li-ion batteries, delivering a reversible capacity of 495 mAhg −1 after 500 cycles. The few-layered graphite substrate could successfully promote the electron transfer kinetics and also buffers the mechanical stress caused by the lithiation-delithiation of perfectly attached SnO 2 nanorods during the battery cycling. The molten salt process discussed here provides a cost-effective and scalable strategy for rapid preparation of the hybrid nanostructured anode material, utilizing the low cost and abundant natural graphite.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Bo Xiao,Xin Li,Zijun Yi,Yubo Luo,Qinghui Jiang,Junyou Yang
Tin oxide (SnO2) has been commonly used as an electron transport layer (ETL) in planar perovskite solar cells (p-PSCs) because it can be prepared by a low-temperature solution-processed method. However, the device performance has been restricted due to the limited electrical performance of SnO2 and its mismatched energy level alignment with the perovskite absorber. Considering these problems, sodium tungstate (Na2WO4) has been employed to modify the SnO2 ETL. The conduction band minimum of SnO2 increases and the defects at the ETL/perovskite interface decrease by the modification of the SnO2 ETL with Na2WO4, thus reducing the energy barrier between the ETL and perovskite. In addition, the electron extraction ability has been enhanced and the interface recombination between the ETL and perovskite has also been inhibited. As a result, the photovoltaic performance of p-PSCs based on the modified ETL has been improved, and a champion power conversion efficiency of 21.16% has been achieved compared with the control device of 17.30% with an open circuit voltage increased from 1.075 to 1.162 V.
研究领域:
材料科学
·
能源技术
·
光电领域
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）