ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 27
·70371-70385
·
IF 5.8
Li Jiayi,Yan Chumin,Sun Dedong,Ma Hongchao,Wang Guowen,Ma Chun,Hao Jun
In this work, Fe 3 O 4 /CoNi-MOF was synthesized by a simple solvothermal method. The catalytic performance of 0.2-Fe 3 O 4 /CoNi-MOF toward PMS activation was studied by degradation of 20 mg/L methylene blue (MB). The results indicated that 0.2-Fe 3 O 4 /CoNi-MOF had good catalytic ability, the removal rate of MB was 99.4% within 60 min with 125 mg/L PMS and 150 mg/L catalyst. Quenching experiment and electron paramagnetic resonance (EPR) analysis revealed that the singlet oxygen ( 1 O 2 ), superoxide radical (•O 2 − ) and sulfate radical (SO 4 •− ) played a crucial role in the catalytic degradation process. Meantime, mechanism of PMS activation by 0.2-Fe 3 O 4 /CoNi-MOF was proposed, the electrons donated by Fe 2+ can also enhance the Co–Ni cycles. In conclusion, Fe 3 O 4 /CoNi-MOF composite catalyst has the advantages of simple preparation, excellent catalytic activity and reusability, which is an effective catalyst for water pollution control.
研究领域:
环境化学
·
催化
·
纳米材料
·
水处理
·
化学工程
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 3
·1-10
·
IF 5.479
Liu Lihong,Yang Ming,Zhao Hui,Xu Yingming,Cheng Xiaoli,Zhang Xianfa,Gao Shan,Song Haiyan,Huo Lihua
Co 3 O 4 /carbon hybrid hollow nanospheres (hs-Co 3 O 4 /C) with an empty cavity and a thin shell, were synthesized starting from the pectin and cobalt acetate via cross-linking deposition at room temperature and post-calcination. The hierarchical structure is constructed from the interconnected nanoparticles in the residual carbon matrix, and the carbon content can be adjusted by changing the calcination temperature. The gas sensor based on hs-Co 3 O 4 /C calcined at 300 °C in air shows high response towards 50 ppm of H 2 S (S = 95.5) and good selectivity at a low working temperature (92 °C). The detection limit is as low as 0.1 ppm. The non-enzymatic glassy carbon electrode based sensor constructed from the same material exhibits excellent electrocatalytic activity for H 2 O 2 with the sensitivity of 405.8 μA∙mM∙cm −2 at 0.3 V (vs. SCE) in alkaline solution. The chronoamperometric response time is < 3 s and the detection limit (at S/N = 3) is 0.30 μM. The good sensing performances are attributed to the synergetic effect of unique hollow nanostructure and appropriate amount of carbon in the hybrid material. The porous nanostructure can increase the mass transfer efficiency, and the cross-linked nanoparticles with good crystallinity also improve the conductivity of materials. The presence of carbon enhances the charge transfer ability and increases the specific surface, thereby improving the sensor performance.
Schematic illustration of the formation of hollow Co 3 O 4 nanospheres composited with pectin-derived carbon. The material displays excellent selectivity for H 2 S gas and in non-enzymatic detection of dissolved H 2 O 2 .
研究领域:
分析化学
·
材料科学
·
生物传感器
·
环境监测
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2020
·Vol. 28
·期 1
·109-116
·
IF 2.183
Du Yue,Zhou Lina,Liu Zhenhui,Yang Lun
Highly ordered three-dimensional (3DOM) macroporous polyoxometalate (POM)-based zirconia hybrids with relatively high surface area and interconnected pore structure have been fabricated by colloidal crystal template method. Owing to the evenly distributed POM active sites, large-scaled 3D ordered macroporous structure, and high porosity of as-synthesized POM-based ZrO 2 composite, it exhibits excellent extractive-oxidative desulfurization activity and recyclability. 500 ppm of dibenzothiophene (DBT) in the model fuel can be removed within 2 h under mild conditions and no obvious loss of catalytic activity even after 20 times. The oxidative reaction of DBT follows pseudo-first-order kinetics, corresponded to an Arrhenius activation energy of 61.1 kJ/mol.
研究领域:
无机化学
·
催化化学
·
材料科学
·
环境化学
·
能源化工
✓ 已验证
DOI
高影响因子
Functional Materials Letters
·
2024
·
IF 1.2
Kangjun Geng,Zhengdong Feng,Tingyu Zhang,Shan Huang,Honcheng Zhu,Bangzhi Shen,Boning Dong,Yan Yan,Sai Jiang,Jianhua Qiu,Huafei Guo
Antimony Selenide (Sb 2 Se 3 ) exhibits potential as a solar energy material owing to its optimal bandgap, lack of toxicity, and abundance of earth abundant elements. Currently, cadmium sulfide (CdS) serves as the predominant buffer layer for Sb 2 Se 3 solar cells. However, the use of CdS hinders environmentally friendly advancement due to the toxic properties of the element cadmium. Hence, the quest for non-toxic buffer layers poses a significant challenge to the further advancement of Sb 2 Se 3 solar cells. In prior research, tin oxide (SnO 2 ) has been explored as a buffer layer. Nonetheless, the efficiency of SnO 2 /Sb 2 Se 3 solar cells was hampered by the rough surface of SnO 2 films and the poor crystallinity of Sb 2 Se 3 films. In this investigation, we enhanced device efficiency by improving the uniformity of the SnO 2 surface and enhancing the crystallinity of Sb 2 Se 3 through spin-coating sulfur (S) onto the SnO 2 film. Detailed examinations were conducted on the structure, optical, and electrical properties of the respective SnO 2 and Sb 2 Se 3 thin films. Ultimately, an efficiency of 3.38% was achieved using the spin-coated S:SnO 2 film, marking an 85% enhancement compared to the baseline device.
研究领域:
光伏技术
·
材料科学
·
薄膜技术
·
可再生能源
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2017
·Vol. 43
·期 8
·6257-6262
·
IF 2.986
Zhongdong Zhao,Yihan Qi,Qiuying Chen,Xuerong Zheng,Qiuyan Hao,Wen Zhang,Jing Mao,Caichi Liu,Hui Liu
Compared with the expensive and complicated vacuum techniques, the solution-based process to deposit I-III-VI 2 chalcogenide thin films (I=Cu, III=In or Ga, VI=S or Se) has attracted great interests due to its lower cost, higher scalable production and better application in flexible substrate . Herein, a low-toxic and high-active mixture solvent comprised of 1, 2-ethanedithiol and 1,2-ethylenediamine is utilized to dissolve elemental Cu, In and S powders at 60 °C, forming the CuInS 2 (CIS) precursor solution . After spin coating and annealing in a both Ar gas and selenium atmosphere, a dense and large-grained chalcopyrite CuIn(S,Se) 2 (CISSe) thin films with a close-packed grain size of ~800 nm are prepared, eliminating a undesired fine fine-grained bottom layer. In addition, the selenization temperature of the CISSe thin films is also discussed, which influences the phase composition, crystallinity and morphology of CISSe thin films. Photovoltaic device of the CISSe-based thin films is fabricated, obtaining a power conversion efficiency of 6.2% with an active cell area of 0.5 cm 2 under AM 1.5 illumination.
研究领域:
材料科学
·
薄膜制备
·
光伏器件
·
无机功能材料
·
半导体材料
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·Vol. 48
·期 3
·3636-3646
·
IF 4.527
Shunxiang Wang,Songwen Fang,Kexiang Zhang,Yongjin Zou,Zuoan Xiao,Fen Xu,Lixian Sun,Cuili Xiang
A poor electrical conductivity and short cycle life limits the wide application of transition metal oxides in energy storage applications. In this study, yolk-shell structured CuCo 2 S 4 was grown on NiO nanosheets (NiO@CuCo 2 S 4 ) via a hydrothermal method and vulcanization , which combined the synergistic interactions between Ni, Co, and Cu. The effect of varying the amount of the vulcanizing agent (thiourea) on the electrochemical performance of NiO@CuCo 2 S 4 was also investigated. Moreover, the amount of thiourea not only tuned the morphology of the composite, but significantly influenced its electrochemical performance. When the Cu 2+ : Co 2+ : thiourea molar ratio in the precursor solution was 1:2:6, the obtained NiO@CuCo 2 S 4 exhibited the best electrochemical performance of the various systems examined, with a specific capacitance of 1658 F g −1 being achieved at 1 A g −1 . Density functional theory calculations further confirmed the excellent synergistic effect between NiO and CuCo 2 S 4 . In addition, the asymmetric supercapacitor composed of a NiO@CuCo 2 S 4 positive electrode reached an ultrahigh energy density of 73 Wh kg −1 at a power density of 802 W kg −1 , as well as excellent cycling stability (i.e., 91% capacitance retention after 5000 cycles). These results suggest that NiO@CuCo 2 S 4 is a promising candidate for use in energy storage applications.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2021
·
IF 8.071
Yanping Bao,Jinhao Lai,Yishun Wang,Zheng Fang,Yongshi Su,Daniel S. Alessi,Nanthi S. Bolan,Xiaolian Wu,Yan Zhang,Xueding Jiang,Zhihong Tu,Hailong Wang
Iron (III) co-precipitation with dissolved organic matter (DOM) is pervasive in many natural environments. However, the effects of DOM on the formation of Fe(III) hydroxysulfate (FHS) and its environmental implications are poorly understood. In this study, fulvic acid (FA) was used as a model DOM compound, and experiments were devised to investigate the effects of FA on the formation of FHS. In addition, the Pb(II) adsorption capabilities of FHSs biosynthesized under various FA dosages, including kinetics and sorption isotherm experiments, were conducted. These experiments showed that co-precipitation of FA promoted the formation of Fe-FA composites, FA-doped schwertmannite , and small particles of jarosite . Co-precipitates are more enriched in carboxyl (–COOH) functional groups due to their preferential binding with FHS. The adsorption kinetics , isotherms and mechanisms of Pb onto the biosynthesized FHSs were then comprehensively characterized and modeled. Though the specific surface area decreased with increasing FA loading, the introduction of FA into FHSs increased Pb(II) adsorption, with the highest concentration of FA addition improving the removal capacity of Pb(II) to 91.54%. Kinetics studies and intra-particle diffusion models indicated that the adsorption of Pb(II) onto the FHSs was correlated with the number of active sites, and two adsorption steps: surface adsorption and the diffusion of Pb(II) in channels inside the biosynthesized FHSs, are suggested. The adsorption mechanism was attributed to cation exchange between Pb(II) and –OH and –COOH functional groups, and the co-precipitated FA provided additional sites for Pb(II) adsorption by FHS.
研究领域:
环境地球化学
·
水处理技术
·
胶体与界面化学
·
污染控制化学
·
功能材料
·
吸附科学
✓ 已验证
DOI
高影响因子
SCRIPTA MATERIALIA
·
2019
·
IF 4.539
Qingshuang Ma,Feng Lan,Xinhua Li,Zunfeng Du,Huijun Li,Zongqing Ma
In this work, the superconducting properties of FeSe 1−x S x with 0 ≤ x ≤ 0.5 were studied. With S doping, T c is enhanced and shows a dome shape in the studied composition range. XRD measurements demonstrate that S substituting Se sites introduces positive chemical pressure, which can suppress the orbital ordering, manifesting as the decrease of T s . Hall measurements demonstrate that S doping can effectively tune the charge carriers and make hole-type carriers predominant. However, no maxing T c is obtained as T s vanishes in FeSe 0.7 S 0.3 , indicating the nematic order has no universal influence on the superconductivity of FeSe system.
研究领域:
凝聚态物理
·
材料科学
·
低温物理学
·
强关联电子系统
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2022
·
IF 3.656
Jiaying Zhang,Zhendong Yao,Wenzhen Zou,Qiang Shen,Meiqiang Fan,Tingli Ma
Transition trimetallic sulfide NiCoMn–S attracts great attention due to its high specific capacity for hybrid supercapacitors , as well as Ti 3 C 2 is considered essentially as a potential new electrode material with iconic two-dimensional layered structure and excellent conductivity. Herein, NiCoMn–S nanoparticles are composited with two-dimensional layered Ti 3 C 2 via simple one-step hydrothermal method , which is first applied as positive electrode in hybrid supercapacitors (HSCs). A large number of NiCoMn–S nanoparticles distribute on the surface of Ti 3 C 2 and even insert into the Ti 3 C 2 layers, providing abundant electrochemical active sites for redox reaction and enhancing the mechanical stability for composites. Moreover, the NiCoMn–S/Ti 3 C 2 composites show lower charge-transfer resistance than pure NiCoMn–S, illustrating that the two-dimensional layered structure of Ti 3 C 2 improve the conductivity and supply additional electronic channels for ion transportation. The NiCoMn–S/Ti 3 C 2 -3.4% delivers a specific capacity of 347.1 C g −1 at a specific density of 1 A g −1 , which is 28% higher than that of pure NiCoMn–S (270.2 C g −1 at 1 A g −1 ). Finally, a hybrid supercapacitor (HSC) is assembled by using NiCoMn–S/Ti 3 C 2 -3.4% as positive electrode and RGO as negative electrode, realizing a specific capacity of 164.3 C g −1 at 1 A g −1 and high specific energy of 16.2 Wh kg −1 at a specific power of 15 kW kg −1 .
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
功能材料
✓ 已验证
DOI
高影响因子
FUEL
·
2014
·
IF 3.406
Wenqing Li,Liying Wang,Yu Qiao,Jian-Ying Lin,Meijun Wang,Liping Chang
Understanding the effect of the atmosphere on the release of alkali and alkaline-earth metals (AAEM) during oxy-fuel combustion is important for the development of oxy-fuel combustion technologies with reduced problems with particulate formation and corrosion. To this end, we examined the release behavior of AAEM during oxy-fuel combustion in different gas environments. A drop-tube reactor and ion chromatography were used to investigate the release rates of AAEM. Our results show that the release rates of Na and K were higher than those of Ca and Mg in all types of gas environments. Experimental conditions that favor combustion, namely, higher temperature, higher oxygen content, and longer residence time, markedly increased the release rates of Na and K, whereas changes in the release rates of Ca and Mg were much smaller. The presence of SO 2 in the atmosphere suppressed the release of AAEM via formation of sulfates, whereas the presence of H 2 O promoted it. A synergistic effect of H 2 O and SO 2 on the release of AAEM during oxy-fuel combustion was observed.
研究领域:
燃烧化学
·
能源工程
·
环境化学
·
材料腐蚀
·
颗粒物形成
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Wenyuan He,Xuejun Zheng,Jinfeng Peng,Qiang Zhang,Dazhao Pei,Xinyang Yan
A facile one-step solid-phase synthesis strategy is developed for synthesizing a binder-free molybdenum disulfide/carbon fibers paper (MoS 2 /CFP) anode. The microstructure, composition, morphology and electrochemical performances were investigated. It is found that the thin MoS 2 layers are well anchored on the interlaced carbon fibers to form MoS 2 /CFP, which has mesoporous structure and large specific surface area of ∼18.8 m 2 g -1 . As a result, the obtained MoS 2 /CFP anode exhibits a reversible capacity of 261 mAh·g −1 with 31.2% loading ratio of MoS 2 . After subtracting the capacity of CFP, the MoS 2 in the composite anode delivers a reversible capacity of 539 mAh·g −1 and shows better cycle stability than commercial MoS 2 after 100 cycles at 100 mA g −1 . The remarkable electrochemical performances could be attributed to the buffer space among carbon fibers for the volume changes of MoS 2 as well as the highly conductive carbon fibers network, suggesting that the MoS 2 /CFP is a promising binder-free anode for lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Gang Peng,Xiayin Yao,Hongli Wan,Bingxin Huang,Jingyun Yin,Fei Ding,Xiaoxiong Xu
An insightful study on the fundamental lithium storage behavior of all-solid-state lithium battery with a structure of LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA)/Li 10 GeP 2 S 12 /Li-In is carried out in this work. The relationship between electrochemical performances and particle size, surface impurities and defects of the NCA positive material is systematically investigated. It is found that a ball-milling technique can decrease the particle size and remove surface impurities of the NCA cathode while also give rise to surface defects which could be recovered by a post-annealing process. The results indicate that the interfacial resistance between the NCA and Li 10 GeP 2 S 12 is obviously decreased during the ball-milling followed by a post-annealing. Consequently, the discharge capacity of NCA in the NCA/Li 10 GeP 2 S 12 /Li-In solid-state battery is significantly enhanced, which exhibits a discharge capacity of 146 mAh g −1 at 25 °C.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）