ACS Applied Materials & Interfaces
·
2014
·
IF 5.9
Yanchun Yang,Gang Wang,Wangen Zhao,Qingwen Tian,Lijian Huang,Daocheng Pan
Solution deposition approaches play an important role in reducing the manufacturing cost of Cu2ZnSnSe4 (CZTSe) thin film solar cells. Here, we present a novel precursor-based solution approach to fabricate highly efficient CZTSe solar cells. In this approach, low-cost elemental Cu, Zn, Sn, and Se powders were simultaneously dissolved in the solution of thioglycolic acid and ethanolamine, forming a homogeneous CZTSe precursor solution to deposit CZTSe nanocrystal thin films. Based on high-quality CZTSe absorber layer, pure selenide CZTSe solar cell with a photoelectric conversion efficiency of 8.02% has been achieved without antireflection coating.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
·
2014
·
IF 3.679
Sheng-jie Xia,Xiao-bo Zhou,Wei Shi,Guo-xiang Pan,Zhe-ming Ni
Three transition metal oxides (Fe 3 O 4 , CeO 2 and SnO 2 ) modified Zn/Ti–layered double hydroxides (LDHs) were successfully synthesized. These materials were characterized by powder X-ray diffraction (XRD), inductively coupled plasma atomic emission spectrometry (ICP-AES), Brunauer–Emmett–Teller (BET) and UV–vis diffuse reflectance spectrum (UV–vis) for the purpose of confirming the formation of good crystal structure. Comparing with original layered double hydroxides, the transition metal oxides modified Zn/Ti layered double hydroxide materials show narrower band gap, larger surface area, smaller pore volume, pore size distribution, and higher removal efficiency for acid red 14 under visible light. The decomposition efficiency of acid red 14 was all over 92% after 120 min. In addition, the thermal regeneration for re-use of layered double hydroxide materials after photodegradation was feasible for at least four cycles (degradation amount still all over 80%). Furthermore, the kinetic parameters, intermediates and possible photocatalytic pathways for acid red 14 decomposed by these transition metal oxides modified Zn/Ti layered double hydroxide materials were also investigated carefully.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2014
·Vol. 38
·期 8
·3999-4006
·
IF 3.159
Zhenzhen Wang,Shangru Zhai,Bin Zhai,Zuoyi Xiao,Feng Zhang,Qingda An
Novel protocol towards multifunctional magnetic organic–inorganic core–shell nanostructured catalysts of Fe3O4@SN/HPW@CG–Ag with tailored properties are presented in this work. Such nanocomposites congregate the properties and functions of a single component into a whole. For instance, Fe3O4 cores protected by amino-functionalized SiO2 shell endowed the composites with superparamagnetism (28.6 emu g−1) and thereby facilitate the process of separation and recovery. Phosphotungstic acid, as a bridging agent, provided a strong interaction for the anchoring of glutaraldehyde cross-linked chitosan onto the surface of Fe3O4@SN. More interestingly, chitosan could simultaneously behave as a stabilizer and reductant for the in situ synthesis of “green” Ag NPs without addition of any other reducing agent or organic solvent, and Ag NPs provided the compounds with a catalytic performance. Further the size, loading of Ag NPs and the thickness of the chitosan layer were all controllable. Meaningfully, the as-synthesized catalyst Fe3O4@SN/HPW@CG–Ag exhibited an exceptional catalytic performance for the reduction of 4-nitrophenol in the presence of sodium borohydride (the reaction was accomplished within 7 min) and could be reused at least 10 times with good stability by means of convenient magnetic separation. Thence, the design philosophy of the multifunctional robust Ag-based nanocatalysts may pave the way for the synthesis of other catalyst systems with long-term stability.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Saudi Chemical Society
·
2024
·
IF 5.8
Qiuyun Zhang,Xingyue Hong,Jiao Lei,Yanting Lei,Yigang Yang,Jingsong Cheng,Yulin Hu,Yutao Zhang
Facilitating energy resource deficiency and environmental contamination, this work focuses on sustainable biodiesel production through the esterification reactions of oleic acid (OA) with methanol. To address the reaction, a novel heterogeneous acid catalyst, 12-tungstophosphoric acid (TPA) immobilized on Sn-based MOFs (Sn(II)-BDC) was synthesized via a simple, green solvent, and easy-to-implement synthesis strategy for the first time, and applied effectively for esterification process of OA to produce biodiesel. The structure and composition of as-obtained catalyst have been verified using XRD, FTIR, N 2 physisorption, SEM, EDX, TG, Py-FTIR, TPD-NH 3 , and XPS techniques. The obtained TPA/Sn(II)-BDC catalyst was found to be the best with 60 wt% of TPA loading, which resulted in an OA conversion of 91.7 % at optimized conditions of 0.15 g catalyst loading and methanol to OA molar ratio of 20:1 at temperature of 120 °C in 4 h, and the excellent performance arises from available pores structure, large amounts of acidic sites, good stability and the synergistic catalytic effect of TPA and Sn(II)-BDC. Furthermore, the composite catalyst reusability has been studied for five cycles, and it exhibits an acceptable conversion. This research provides a green and large-scale synthesis route for the sustainable production of biofuels by constructing heteropolyacids/Sn-based MOFs synergistic catalysts.
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2024
·
IF 10.5
Huiliang Wen,Wei Xu,Sen Lin,Aiguo Guan,Yingna Zhang,Xin Li,Chongbo Liu
As a representative magnetic oxide absorber, Fe 3 O 4 has attracted considerable research attention owing to its remarkable magnetic saturation strength as well as semiconducting properties. Doping Fe 3 O 4 with La 3+ leads to 3d-4f magnetic coupling and ion distribution changes due to the unique electron configuration and large ionic radius of La 3+ , thereby greatly enhancing the magnetic performance. However, high density, low dielectric loss, and low permeability at high frequencies inhibit the electromagnetic wave absorption (EMWA) performance of ferrites. In this study, stick-shaped Sn metal-organic framework (MOF) is in-situ grown on La 3+ -doped Fe 3 O 4 using a surfactant. After high-temperature annealing, the SnO 2 /porous carbon composites derived from Sn-MOF wrap the ferrite, forming a core-shell heterostructure, which not only prevents oxidation but also enhances the EMWA performance. Among the prepared La x Fe 3-x O 4 /SnO 2 /C (LFSC) samples, LFSC-2 (with La x Fe 3-x O 4 to Sn-MOF ratio of 1:2) exhibits strong absorption performance with a minimum reflection loss ( RL min ) of −44.1 dB. Furthermore, the gradient metamaterial based on LFSC-3 shows ultra-broadband EMWA with an effective absorption bandwidth ( RL min ≤ −10 dB) of 13.17 GHz. In addition, the LFSC-2 sample demonstrates excellent radar stealth capability in the radar cross section (RCS) far-field response, achieving an RCS reduction value of 20.4 dB∙m 2 .
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Xiangfei Ding,Youbing Zhu,Ketao Shi,Zhen Xu,Jian Chen,Zengxi Li,Hui Wang
ZSM-5 zeolite is extensively employed for hydrocarbons cracking to generate light olefins, and its acidity is closely related to the activity and product distribution. In this work, Al-Sn bimetallic ZSM-5 was prepared via a “one-pot” route. Characterizations, including XRD, UV–Vis, XPS, revealed that Sn species were mainly embedded into the zeolite framework as tetrahedral Sn (IV). Moreover, the Sn atoms promoted the formation of Lewis acid sites and reduced the Brønsted acid amount, which effectively inhibited occurrence of side reactions ( e.g. , aromatization, hydrogen transfer) and improved the selectivity of light olefins in n-hexane cracking. Light olefins yield over HZ5[100,200] (Si/Al = 100, Si/Sn = 200) reached 33.4 % due to the appropriate acid property, in comparison with only 15.4 % for HZ5[50,∞] (Si/Al = 50, Si/Sn=∞) containing system. Through optimization of reaction conditions, better catalytic performance (n-hexane conversion of 91.6 % and light olefins yield of 37.6 %) was obtained over HZ5[100,200] under 575 °C with WHSV of 2 h −1 .
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2025
·
IF 4.8
Yifan Liu,Jiangang Wang,Yuhan Liu,Yuan Zhang,Hongzi Tan,Hongyou Cui
Herein, a series of Sn-based catalysts supported on SBA-15 with temperature responsive ability to in situ construct acidic and basic sites are reported for efficient conversion of biomass-derived sugars into ethyl lactate (EL). Based on the investigation on the effects of the molar ratio of Cl/OH in Sn(OH) x Cl 2-x and the support types, it is found that Sn(OH) 0.5 Cl 1.5 @SBA-15 is an excellent catalyst in catalytic conversion of various sugars to EL, achieving a maximum EL yield of 68.1 % from sucrose. The in situ generated basic SnO sites play important roles in accelerating the retro-aldol condensation reaction, while the concomitantly released acidic sites (Sn 2 + , SnCl + and H + ) could catalyze the reactions of hydrolysis, isomerization, intermolecular rearrangement and esterification to EL. Benefiting from the temperature responsive effect, not only can the reaction pathways be regulated toward high EL selectivity, but also the catalyst can be recycled easily. This research paves an avenue for exploring efficient catalysts for biomass valorization.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaolong Liu,Jiahe Sun,Shuo Li,Kaixuan Yang,Ting Su,Hongying Lü,Zhiguo Zhu
Sn-containing zeolite catalysts exhibit the unique feature of selectively activating carbonyl groups in organic compounds, which demonstrate relatively high activity and selectivity in the Baeyer-Villiger (B V) oxidation of aldehydes or ketones using H 2 O 2 as the oxidant. However, the influence of diffusion property and trace water on the ε-caprolactone selectivity as targeted product in the cyclohexanone's B V oxidation system with the green oxidant of aqueous H 2 O 2 remains unclear. To address this, three kinds of Sn-Beta zeolites are prepared by interzeolite transformation, structural reconstruction, and post-synthesis method to establish structure-property relationships. The physicochemical property and Sn coordinated state are investigated in detail. The existence of trace water in the reaction system negatively affects the conversion and product selectivity by competitive adsorption of water with reaction substrates and facilitated hydrolysis of ε-caprolactone, respectively. DFT calculation implies that kinetics dominates the conversion of cyclohexanone → ε-caprolactone → 6-hydroxycaproic acid. The structure-property relationship indicates that the cyclohexanone conversion and ε-caprolactone selectivity are closely related to the adsorption amounts of substrates and the diffusion performance of products, respectively, over Sn-Beta zeolite catalysts. Finally, the reusability and deactivation mechanism are analyzed. This study aims to provide guidance for designing efficient stannosilicate zeolite catalysts for B V oxidation through precisely modulating the zeolite's diffusion property.
✓ 已验证
产品关联
DOI
高影响因子
Reaction Chemistry & Engineering
·
2024
·
IF 3.4
Yongming Xu,Wenzhao Liu,Bo Xu,Ke Wang,Jinchu Yang,Yueqi Si,Xuebin Zhao,Tingting Zhang,Zhan Zhang,Xueyi Qiao,Tianliang Lu
Glycolic acid finds extensive applications in the production of biodegradable polymers, pharmaceuticals, and fine chemicals. In this study, a Pt catalyst supported on the Sn-Beta zeolite (Pt/Sn-Beta) was developed to achieve the efficient and highly selective catalytic oxidation of ethylene glycol with molecular oxygen to prepare glycolic acid at near-room temperature (30 °C). Characterization results, including XRD, TEM, XPS, FT-IR, and O2-TPD, revealed that the relatively uniform dispersion of Pt particles, the optimal density of Lewis and Brønsted acid sites in the catalyst, and the synergistic interaction between Sn and Pt sites might be key factors contributing to the excellent catalytic performance of the Pt/Sn-Beta catalyst. By optimizing the reaction conditions, a 90% conversion of ethylene glycol and an 81% selectivity of glycolic acid were obtained. Furthermore, Pt/Sn-Beta exhibited excellent stability, with no significant decrease in catalytic performance after six repeated uses.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yue Hu,Lijiu Cao,Yunpeng Gong,Xu Ma,Yufang Chen,Tao Jin
Formaldehyde sensors represent an effective technology for real-time, online monitoring of formaldehyde concentrations. The selectivity of gas-sensitive materials for formaldehyde is a fundamental determinant of sensor performance and is crucial for the development of formaldehyde sensing technology. In this work, Sn-doped Zn-MOFs were employed to fabricate SnO 2 /ZnO micro-nano materials, and their selective response behaviors to formaldehyde were systematically explored. The results demonstrate that 5 % SnO 2 /ZnO, prepared with 5 % Sn doping, exhibits exceptional selectivity for formaldehyde. Under testing conditions of 170 °C and relative humidity below 60 %, the 5 % SnO 2 /ZnO sensor achieved a selectivity coefficient of 0.87 toward 50 ppm formaldehyde, with a response value of 72.8, response and recovery times of 81/30 s, a linear regression coefficient of 0.9997, and a minimum detection limit of 0.047 ppm. Moreover, the 5 % SnO 2 /ZnO sensor demonstrates excellent selectivity, anti-interference capability, and stability for formaldehyde detection. The enhanced formaldehyde selectivity is attributed to the high specific surface area, abundant pore structure, abundant oxygen vacancies, and n–n heterojunctions present in the 5 % SnO 2 /ZnO composite.
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Xue Wei,Ziqi Han,Xiaobo Min,Zhihong Liu,Qihou Li,Longgong Xia
CdTe thin-film solar cells, as a core component of photovoltaic devices, have been commercially deployed for over 30 years with global installations surpassing 30 GWp. Decommissioning has surged since 2010, showing major material recovery potential from retired modules. However, CdTe thin-film solar cells feature ultra-precise architectures with micron-sized CdTe/CdS/SnO 2 functional layers deposited on glass substrates. This structural complexity and ultralow metal concentrations create significant technical barriers for metal recovery. Current recycling technologies in both literature and practice exhibit insufficient constituent recovery and secondary waste generation, necessitating advanced separation technologies. This study developed an innovative recycling process achieving multi-component recovery: intact glass substrates, high-purity Te powder (99.9 wt%), CdS precipitates (99.0 wt%), and sodium thiostannate (Na 2 SnS 3 ) solutions. There were four steps: (1) Decommissioned modules were heated in air at 300 °C for 1 h to degrade EVA and recover intact back glass; (2) Front glass with functional layers further reacted with NaHS at 400 °C, converting CdTe/CdS/SnO₂ into Te/CdS/SnS₂ powder and recovering clean front glass; (3) Mixed powder was processed at 500 °C for 2 h (<10 Pa), yielding >99.9 wt% Te with 98.31 % ± 2.11 % recovery; (4) Na₂S leaching (140 g/L, L/S = 10:1, 40 °C, 2 h) yielded 99.0 wt% CdS precipitate and Na₂SnS₃ solution with >99 % metal recovery. Material balance analysis and life cycle assessment demonstrated that the proposed technology exhibits superior cost-effectiveness and minimized environmental footprint, while maintaining industrial scalability.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Hao Liu,Jinhao Xie,Fang Yang,Peng Zhang,Chaolun Liang,Yanxia Yu,Peng Liu,Xihong Lu
The inactive “dead Sn” formation and the unfavorable hydrogen evolution reaction (HER) are the two issues limiting the lifespan and coulombic efficiency of Sn anodes in aqueous acidic batteries, particularly in high-areal-capacity cases. Herein, we propose the utilization of triethyl phosphate (TEP) as a bifunctional electrolyte additive to simultaneously modulate the interfacial properties and reshape the Sn 2+ solvation structure. Systematic characterizations evidence that the presence of such dual-functional TEP additive can substantially prohibit hydrogen evolution and promote the “dead-Sn-free” Sn deposition. Accordingly, both Sn||Sn and Sn||Cu cells assembled in TEP-modified electrolyte present exceptional cycling performance, maintaining continuous operation for over 760 h at 5mAh cm −2 and 5 mA cm −2 . When coupled with a MnO 2 cathode, the existence of TEP additive endows Sn||MnO 2 full batteries with a remarkable upgrade of rate capability and cycling stability. This study demonstrates that regulating interfacial adsorption and electrolyte solvation structure is a highly effective strategy to enhance the overall performance of Sn anodes.
✓ 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）