ACS Sustainable Chemistry & Engineering
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2018
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IF 6.14
Xiaomei Yang,Ying Liu,Xiaoxin Li,Jinxiu Ren,Lipeng Zhou,Tianliang Lu,Yunlai Su
Rapid synthesis of Sn-containing nanosized all-silica Beta zeolite was developed in this work. The method employed all-silica Beta (Si-Beta) as parent, which was crystallized in several hours by the hydrothermal method, and incorporated Sn to Si-Beta through grinding with SnCl4·5H2O and subsequent calcination procedure. The prepared Sn-Beta zeolites were analyzed by several methods including XRD, SEM, N2 physisorption, FT-IR spectroscopy of deuterated acetonitrile and pyridine adsorption, UV–vis DR, and XPS. The mechanism of incorporation of Sn sites into the framework of zeolite was revealed. The results show that the successful incorporation of Sn sites strongly depends on the crystallinity of the parent Si-Beta. Si-Beta with lower crystallinity (<90%) had a considerable amount of silanols which provided sites for Sn incorporation into the framework sites. For Si-Beta with higher crystallinity and less silanols, desilication was used to generate more silanols for the incorporation of Sn sites. The prepared Sn-Beta zeolites were effective for the transformation of glucose to methyl lactate (MLA). Its catalytic activity is better than those of Sn-Beta-P prepared by dealumination–stannation of Al-Beta and Sn-Beta-F synthesized through the traditional hydrothermal method. Turnover frequency (TOF) was calculated on the amount of framework Sn sites to measure the intrinsic and initial activity of active Sn sites. TOF values varied in the sequence of nano Sn-Beta ≫ Sn-Beta-F ≫ Sn-Beta-P. The high MLA yield for nano Sn-Beta is due to its higher mesoporosity. The prepared Sn-Beta zeolite was recycled eight times in the transformation of glucose to MLA without any decrease of catalytic activity. Additionally, the effect of potassium salt on the formation of MLA from glucose over Sn-Beta catalyst was studied.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2018
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IF 3.649
Yiping Tang,Chaoqi Bi,Duo Zhang,Guangya Hou,Huazhen Cao,Liankui Wu,Guoqu Zheng,Qingliu Wu
To overcome the shortcomings of poor conductivity and large volume change, we proposed a novel three-dimensional ordered macroporous Cu/Sn (3DOM Cu/Sn) composite material as the anode of lithium-ion batteries (LIB). Electron microscopies and X-ray diffraction revealed that this new 3DOM Cu/Sn composite has the surface of the 3DOM Cu framework covered with a uniform layer of Sn nanoparticles . As a binder-free anode of LIB without conductive additives, this 3DOM Cu/Sn composite demonstrated an extremely high rate capability of about 707 mAh/g at 5C, which is 4 times higher than that of bare Cu/Sn anode, and excellent durability of 851 mAh/g up to 250 cycles. The post-test analysis showed that extraordinarily electrochemical performances of this composite anode are ascribed to the unique 3DOM microstructure.
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BIOCATALYSIS AND BIOTRANSFORMATION
·
2016
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IF 0.892
Wei Wei,Danping Qi,Mingming Diao,Lu Zhaoxin,Fengxia Lv,Haizhen Zhao
In this study, the synthesis of 3-O-β-D-galactopyranosyl-sn-glycerol (GG) was performed by the reverse hydrolysis of D-galactose and glycerol using β-galactosidase from Kluyveromyces lactis. Four process variables, reaction temperature (30.0–45.0 °C), reaction time (24–48 h), enzyme concentration (150.00–350.00 U/mL), and substrate molar ratio (glycerol:D-galactose, 7.5:12.5 mmol/mmol) were investigated and optimized via response surface methodology (RSM) for optimal GG synthesis. Both quadratic equations and the optimal reaction conditions were established. Results showed that the four variables, i.e., reaction temperature, reaction time, enzyme concentration, and substrate molar ratio had significant (p < 0.0001) effects on the synthesis of GG. The optimal reaction conditions were identified as 350.00 U/mL of β-galactosidase concentration and 8.65:1.00 of substrate molar concentration ratio (glycerol: D-galactose) at 39.8 °C and 48 h of reaction. Under these conditions, the GG concentration was 140.03 g/L and GG yield was 55.71%, which both were close to the predicted values (143.26 g/L and 56.73%). This finding proves the RSM to be a useful tool in optimizing process conditions for GG synthesis.
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高影响因子
BIOCATALYSIS AND BIOTRANSFORMATION
·
2016
·
IF 0.892
Danping Qi,Wei Wei,Mingming Diao,Fengxia Lv,Zhaoxin Lu,Xiaomei Bie,Haizhen Zhao
Lipase-catalyzed synthesis of mono- and diesters of 3-O-β-D-galactopyranosyl-sn- glycerol (β-GG) with caproic acid was performed in acetone. The simultaneous production of 1(6’)-monoesters and 1,6’-diesters of β-GG was achieved in this reaction. In order to improve the yield of β-GG esters, four process parameters, enzyme concentration (15 ∼ 25 mg/mL), and substrate molar ratio (caproic acid: β-GG= 1.60 ∼ 2.00 mmol: 0.10 mmol), reaction temperature (40 ∼ 60 °C), and reaction time (8 ∼ 12 h), were optimized via response surface methodology (RSM) employing a three-level-four-variable central composite design. Results showed that enzyme concentration had the most significant (p < 0.0001) effect on the synthesis of β-GG esters. The optimal reaction conditions in acetone were given as follows: Novozyme435 concentration 18.65 mg/mL, molar rate of caproic acid to β-GG 19.46:1, reaction temperature 48 °C, and reaction time 9.83 h. The yield of β-GG esters reached 88.08% under above optimized conditions, which was very close to the predicted value 87.95%. The molar ratio of monoester to diesters was 0.39:0.61. β-GG esters with other fatty acyl chains were synthesized based on the optimized conditions. In vitro antitumor activity indicated that the antitumor activity of β-GG esters was dependent on the nature of fatty acids, such as the length of acyl chain, the degree of saturation, as well as the number of acyl chain.
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高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2016
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IF 4.732
Jing Guo,Wen-Hui Zhou,Ying-Li Pei,Qing-Wen Tian,Dong-Xing Kou,Zheng-Ji Zhou,Yue-Na Meng,Si-Xin Wu
CZTSSe based thin film solar cells have received considerable interests due to low material cost, suitable band gaps and high absorption coefficient of CZTSSe materials. Achieving high efficiency CZTSSe based thin film solar cells often need a high temperature selenization process that always causes Sn loss in the form of gaseous SnSe 2 . Additional Sn complement may decrease the loss of Sn during selenization process and improve the performance of fabricated CZTSSe based thin film solar cells. Here, we investigate the effect of additional Sn complement on the performance of CZTSSe based thin film solar cells fabricated from pure element solution. XRD and Raman characterizations indicate that additional Sn complement could reduce the secondary phase that may cause the voltage loss and decrease of efficiency. The solar cell fabricated with 15% additional Sn complement shows the best conversion efficiency of 8.71% (V OC =0.42 V, J SC =32.73 mA cm −2 , FF=63.19%). To the best of our knowledge, it is the highest efficiency of CZTSSe based thin film solar cells fabricated from pure element solution.
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高影响因子
CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Lixiong Yin,Simin Chai,Jianfeng Huang,Xingang Kong,Jia Wang,Peijie Bai
In present work, Sn-based composites have been successfully synthesized by the solvothermal method. The composition and content of the solvent have crucial influences on the phase composition, crystallinity and morphology of the samples. It is found that the nanoflakes assembling to the spherical SnS 2 /SnO 2 obtained in deionized water (DI w) gradually convert to nanoparticles in anhydrous ethanol (AE) solvent. The hierarchical SnS 2 /SnO 2 composites obtained in AE solvent exhibit excellent electrochemical performances. The initial discharge capacity of the anode can reach to 1420.06 mA h g −1 at 100 mA g −1 for lithium-ion batteries (LIBs), and the capacity can maintain 588.15 mA h g −1 after 50 cycles. Compared with other Sn-based anode materials , the SnS 2 /SnO 2 sample obtained in the AE solvent can still retain a stable discharge capacity of 559.16 mA h g −1 even at 800 mA g −1 . The results obtained in the work reveal the influence of the solvent on the morphology of Sn-based samples and the potential of the sphere-like SnS 2 /SnO 2 structure as LIBs anode.
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高影响因子
Advanced Science
·
2024
·
IF 14.3
Jinxian Feng,Chunfa Liu,Lulu Qiao,Keyu An,Sen Lin,Weng Fai Ip,Hui Pan
Electrolyte plays crucial roles in electrochemical CO 2 reduction reaction (e-CO 2 RR), yet how it affects the e-CO 2 RR performance still being unclarified. In this work, it is reported that Sn-Zn hybrid oxide enables excellent CO 2 -to-HCOO − conversion in KHCO 3 with a HCOO − Faraday efficiency ≈89%, a yield rate ≈0.58 mmol cm −2 h −1 and a stability up to ≈60 h at −0.93 V, which are higher than those in NaHCO 3 and K 2 SO 4 . Systematical characterizations unveil that the surface reconstruction on Sn-Zn greatly depends on the electrolyte using: the Sn-SnO 2 /ZnO, the ZnO encapsulated Sn-SnO 2 /ZnO and the Sn-SnO 2 /Zn-ZnO are reconstructed on the surface by KHCO 3 , NaHCO 3 and K 2 SO 4 , respectively. The improved CO 2 -to-HCOO − performance in KHCO 3 is highly attributed to the reconstructed Sn-SnO 2 /ZnO, which can enhance the charge transportation, promote the CO 2 adsorption and optimize the adsorption configuration, accumulate the protons by enhancing water adsorption/cleavage and limit the hydrogen evolution. The findings may provide insightful understanding on the relationship between electrolyte and surface reconstruction in e-CO 2 RR and guide the design of novel electrocatalyst for effective CO 2 reduction.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Na Dai,Yingjie Zhang,Zhiwei Peng,Jikai Liu
An efficient CQDs/TiO 2 /Sn-Fe 2 O 3-x heterojunction photoanode was designed and fabricated to enhance the photoelectrochemical (PEC) performance of hematite for water oxidation. The key innovation of this work lies in the construction of an oxygen-vacancy-rich TiO 2 /Sn-Fe 2 O 3-x heterojunction photoanode by using Ti 3 C 2 MXene as the precursor of TiO 2 through a one-pot calcination process. The two main advantages of the present synthetic strategy are introducing abundant oxygen vacancies into the photoanode and preserving the nanostructure of the photoanode at high temperatures. During the synthesis, Ti 3 C 2 MXene was oxidized to form TiO 2 , while Sn-FeOOH was simultaneously converted into Sn-Fe 2 O 3-x nanorods. The high reducibility of Ti 3 C 2 MXene and the doping of Sn 4 + played a critical role in introducing abundant oxygen vacancies into Sn-Fe 2 O 3-x . The concurrent formation of TiO 2 and Sn-Fe 2 O 3-x effectively prevented the aggregation of α-Fe 2 O 3 nanorods at the high calcination temperature of 800°C and promoted close contact between the TiO 2 and Sn-Fe 2 O 3-x , reducing the interfacial transfer resistance. Lastly, the incorporation of CQDs further increased the light absorption ability and PEC performance of the heterojunction photoanode. The CQDs/TiO 2 /Sn-Fe 2 O 3-x photoanode achieved a photocurrent density of 1.47 mA/cm² at 1.23 V vs. RHE, which was 3.34 times higher than the α-Fe 2 O 3 . The enhanced PEC performance can be attributed to the introduction of abundant oxygen vacancies and the maintenance of its nanostructure at high temperatures, which can improve the donor density, charge transfer efficiency and light harvesting ability of the resultant photoanode.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Shuibo Wang,Biao Wu,Qiuju Zhang,Yiming Li,Lin Zhu,Hongbo Yu,Hongfeng Yin
The selective hydrogenation of cinnamaldehyde (CAL) to prepare cinnamyl alcohol (COL) is challenging as the unwanted hydrogenation of C C bond in CAL is thermodynamically more favorable than the hydrogenation of C O bond. We herein designed core–shell structured nanoparticles (NPs) that consisted of Pt cores and Sn shells to catalyze the CAL to COL conversion. By simply changing the amount of Sn precursor, we generated Pt@Sn NPs with different Sn shell thickness and catalytic performance. Among the samples, Pt@Sn/SiO 2 with Pt/Sn of 1/1 achieved the highest CAL conversion (87.2 %) as well as the COL selectivity (95.4 %), which were 5-fold and 6-fold, respectively, higher than those of Pt/SiO 2 . This catalyst was also applicable to the hydrogenation of other α, β-unsaturated aldehyde and unsaturated carbonyl compounds. Both experiments and theoretical calculations indicated that the strong Pt-Sn interaction and the partial coverage of Pt by Sn facilitated their adsorption of C O bonds, thus enhancing the conversion of CAL and the selectivity towards COL.
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APPLIED SURFACE SCIENCE
·
2025
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IF 6.9
Zhaoxiang Qi,Yan Zhang,Junzi Huang,Wenjun Zhang,Ying Wang,Ying Qi,Shu Yin,Hongyu Mi,Yahong Xie
The integration of environmental remediation with green hydrogen production bifunctional water electrolysis in hypersaline industrial effluents requires catalysts that simultaneously address efficiency-stability trade-offs. This study presents a self-supported P-SnCoFe-LDH/NF architecture engineered through dual-ion co-doping, demonstrating unprecedented performance in chloride-rich alkaline oilfield wastewater. The optimised catalyst achieves overpotentials of 253 mV for oxygen evolution reaction (OER) and 187 mV for hydrogen evolution reaction (HER) at 10 mA cm −2 with 12-h stability, representing a 4 and 41 % performance retention improvement over conventional CoFe-LDH in aggressive media. Mechanistic studies reveal dual electronic modulation: Sn-doping induces d-band center downshifting while P-incorporation generates electron-deficient metal centers. This synergy establishes optimal adsorption–desorption equilibrium, evidenced by 21 % reduced OER charge transfer resistance and 56 % enhanced HER Volmer kinetics. The symmetric electrolyser (P-SnCoFe-LDH/NF||P-SnCoFe-LDH/NF) maintains <2 % voltage decay during continuous operation. This work presents a new paradigm for multifunctional electrocatalysis in complex aqueous matrices.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-15
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IF 15.7
Bai Yang,Meng Yuanyuan,Yang Ming,Tian Ruijia,Wang Jingnan,Jiao Boxin,Pan Haibin,Gao Jiangwei,Wang Yaohua,Sun Kexuan,Zhou Shujing,Lu Xiaoyi,Song Zhenhua,Liu Chang,Ge Ziyi
All-perovskite tandem solar cells (PTSCs) offer a promising approach to surpass the Shockley-Queisser (SQ) limit, driven by efficiently reducing thermalization and transmission losses. However, the efficiency and stability of the narrow-bandgap (NBG) subcells, which are essential for PTSC performance, remain severely constrained by challenges such as lattice instability, strain accumulation and halide migration under illumination. This study introduces a rigid sulfonate-based molecule, sodium naphthalene-1,3,6-trisulfonate (NTS), into tin-lead (Sn-Pb) perovskites, where it strengthens the Sn-I bond through Sn-trisulfonate coordination and reduces light-induced dynamic lattice distortions via the rigid NTS backbone. These molecular interactions alleviate strain heterogeneity within the lattice and homogenize the Sn-Pb compositional gradient, thereby enhancing the structural integrity and long-term stability of Sn-Pb perovskites under operational conditions. As a result, Sn-Pb single-junction perovskite solar cells (PSCs) achieve a power conversion efficiency (PCE) of 23.2%. When integrated into a tandem configuration, the device attains an impressive PCE of 29.6% (certified PCE of 29.2%, one of the highest certified efficiencies to date), with 93.1% of the initial efficiency retained after 700 h of continuous operation. By stabilizing the lattice structure, this work lays a solid foundation for achieving both high efficiency and long-term durability in next-generation perovskite photovoltaics.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 24
·1-13
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IF 2.8
Rafiq Muhammad Nasir,Dai Zhonghua,Zheng Yuanyuan,Li Xujun,Liu Chenxi,Zhao Xin,Cong Yu,Gu Shuitao
The performance of lead-based ceramics in energy storage applications is often hindered by their low energy density and inadequate phase transition properties. The (Pb, La) (Zr, Sn, Ti)O 3 (PLZST) antiferroelectric ceramics have attracted much attention as energy storage materials. In this work, ceramics Pb 1−1.5 x La x (Zr 0.93 Sn 0.05 Ti 0.02 )O 3 at ( x = 0.015, 0.025, 0.035, and 0.045) were prepared using a solid-state method, and their dielectric and energy storage characteristics were studied. It was observed that integrating lanthanum significantly improved the perovskite structure, reducing grain size and boosting the polarization intensity. In this present study, a recoverable energy storage density ( W rec ) of 6.24 J/cm 3 was achieved under an electric field of 270 kV/cm. Moreover, these ceramics demonstrated an impressive discharge energy density ( W dis ), with 90% of the energy released within 1.29 μs. The outcomes show that PLZST is a highly effective material for advanced energy storage, pulse power applications, and paving the way for technological advancements.
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