APPLIED CATALYSIS B-ENVIRONMENTAL
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2017
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IF 9.446
Chenxi Zhang,Kai Yu,Yajun Feng,Yue Chang,Ting Yang,Ying Xuan,Da Lei,Lan-Lan Lou,Shuangxi Liu
The novel visible-light-driven 3DOM-SrTiO 3 /Ag/Ag 3 PO 4 ternary composites were fabricated and used as photocatalysts in the degradation of organic contaminants, including RhB, phenol , and MB. Through the XRD, SEM, TEM, DR UV–vis, XPS, PL spectroscopy, N 2 sorption , and photoelectrochemical measurement, the obtained 3DOM-SrTiO 3 /Ag/Ag 3 PO 4 ternary composites were well characterized. The effects of SrTiO 3 :Ag 3 PO 4 molar ratio and stop-bands of 3DOM-SrTiO 3 on the catalytic performance were systemically investigated. 3DOM-SrTiO 3 /Ag/Ag 3 PO 4 ternary composite photocatalysts exhibited notably enhanced activity compared with single 3DOM-SrTiO 3 and Ag 3 PO 4 catalyst. Among these ternary photocatalysts, S35A65(300) exhibited the most excellent photocatalytic performance under visible light irradiation, which could be mainly attributed to synergy effect of the notably improved separate efficiency of photogenerated electron-hole pairs and the suitable stop-bands of 3DOM-SrTiO 3 (300) material. Although the gradually reduced activity in cycling tests was obtained over S35A65(300) under visible light irradiation, an excellent durability could be achieved for S35A65(300) under UV–vis light irradiation. No obvious loss in photocatalytic efficiency was observed after six cycles for RhB degradation. The notably improved enhanced durability of 3DOM-SrTiO 3 /Ag/Ag 3 PO 4 ternary composites under UV–vis light irradiation could be mainly attributed to the Z-scheme mechanism of this ternary composite photocatalyst.
研究领域:
材料科学
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环境科学
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光催化
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DOI
高影响因子
Inorganic Chemistry Frontiers
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2018
·Vol. 5
·期 10
·2478-2485
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IF 5.106
Xiao Chen,Ming Zhang,Yanchen Wei,Hongping Li,Jiaqi Liu,Qi Zhang,Wenshuai Zhu,Huaming Li
It is vital to develop efficient catalysts for desulfurization in fuels, reducing the pollution caused by sulfur oxides. In this study, polyoxometalate-based ionic liquid supported three-dimensionally ordered macroporous silica (IL-3DOM SiO2) was successfully prepared for heterogeneous oxidative desulfurization of aromatic sulfur compounds. The as-prepared material was characterized using FTIR, XRD, XPS, SEM, TEM, and BET analysis, exhibiting a large pore size and a high specific surface area. The hybrid material with a 3DOM structure exhibited excellent desulfurization performance on aromatic sulfur compounds under mild conditions. Furthermore, no obvious decrease in activity was observed after seventeen cycles, revealing a good stability of the hybrid material. The as-prepared IL-3DOM SiO2 is an ideal candidate for applications in the future desulfurization industry.
研究领域:
材料科学
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环境化学
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DOI
高影响因子
Materials Today Physics
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2021
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IF 9.298
W. Wei,B. Dong,L. Cao,W. Wang
Structural color materials have attracted extensive attention due to their fadeless color, low toxicity and environmentally friendly features, but the colors based on photonic crystal structures are usually angle-dependent on incident lights. In this research, we have fabricated a powder material with three-dimensional ordered macropores (3DOM) structure of silica (SiO 2 ) by a scarified template method . The micron-sized 3DOM SiO 2 powders can diffract lights in certain wavelengths and exhibits vivid structural colors. The structural colors from the 3DOM SiO 2 powder follows the Bragg diffraction of incident light on (111) stacked planes of the face-centered cubic colloidal crystals and the (111) crystal planes are randomly oriented. As a collective effect in the aggregation of micron-sized powders, the structural colors are angle-independent, and thus the 3DOM powders can be use as anti-reflective color coating material . In addition, because its diffraction can limit transmission and absorption of lights in some extent, so this 3DOM SiO 2 powder can be also used as protective coating material for reducing light radiations.
研究领域:
材料科学
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光学
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DOI
高影响因子
Catalysts
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2021
·Vol. 11
·期 5
·533
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IF 4.146
Jing Chen,Yingchun Guo,Tengteng Kang,Xingchi Liu,Xiaomei Wang,Xu Zhang
It is wise to mimic a bioinspired system to design a nanoreactor as a catalyst containing multiple components for a cascade reaction. Here, we report the uniform growth of well-dispersed nano-scale ZIF-8 crystals on the pore walls of 3DOM TiO2via the TEA-assisted crystallization process. The UV-vis spectra indicate that the ZIF-8 photosensitizer can extend the visible-light absorption of 3DOM TiO2. The obtained nanoreactor can efficiently catalyze the one-pot aromatic alcohol oxidization and Knoevenagel condensation cascade reaction for larger molecules. This work offers an important strategy for preparing semiconductor–MOF multifunctional composites with a spatially separated compartmentation for the cascade reaction.Keywords:crystal growth;cascade reaction;nanoreactor;semiconductor–MOF composite
研究领域:
材料科学
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催化化学
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2017
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IF 2.843
Jian Wang,Chao Yang,Ying-Rui Zhao,Hui-Ling Fan,Zhong-De Wang,Ju Shangguan,Jie Mi
Two types of cobalt oxide–silica composites were prepared by sol–gel method using different alcohols (n-butyl alcohol and ethylene glycol) in sol precursors. The corresponding adsorbents with 3DOM structure were also fabricated via a colloidal crystal template method. Physicochemical properties of the materials were characterized by means of numerous techniques, and the performance for hydrogen sulfide (H2S) removal were evaluated at room temperature. It was found that using n-butyl alcohol in sol precursors could achieve a material (SCN57-500) with plentiful ordered mesoporous in grains and thus had very large surface area (314.5 m2/g), whereas the sample obtained from ethylene glycol (SCE57-500) only possessed a smaller surface area. After introducing 3DOM structure into the bulk counterpart, the surface area improved remarkably as in the case of 3D-SCE57-500, which is consistent with our previous studies. However, 3D-SCN57-500 showed a decreased surface area compared with SCN57-500. The loss of surface area was due to the sharply decreased pores in grains, which is originated from sintering when the hard template was burning out during the preparation process. It can be deduced that the increased surface area after introducing 3DOM structure was ascribed to the excellent dispersion, i.e., the newly formed very small nanoscale grains. The results of adsorption experiments show that although SCN57-500 owned the highest surface area among these four adsorbents, however, it exhibited a poorest performance for H2S capture. Both 3DOM samples possessed very favorable breakthrough H2S capacity compared to the counterparts without 3DOM structure. The results indicated that size of crystalline or dispersion and not the surface area is what contributes to the reactivity of the adsorbent. The well-ordered and interconnected macropores play an important role as well. The breakthrough sulfur capacity of 3D-SCE57-500 could reach as high as 189 mg/g with Co3O4 utilization of 63%. The involved reactions for H2S removal by Co3O4 in experimental conditions were suggested.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Desheng Yang,Chaofei Bai,Fengdan Zhu,Chang Liu,Cheng Zhao Tu,Guoping Li,Yunjun Luo,Tianfu Zhang
Designing highly active catalysts and constructing the interface between ammonium perchlorate (AP) and catalysts are effective strategies for achieving efficient thermal decomposition of AP, which is an urgent need for developing AP based composite solid propellants. Herein, we report an impregnation vacuum freeze-drying strategy to encapsulate AP in an independent three-dimensionally ordered macroporous (3DOM) CoFe 2 O 4 (3D CFO) spinel, resulting in a novel 3D CFO encapsulated AP nanocomposite materials (AP-3DCNCs). The connected pores of 3D CFO provide a model structure for the growth of AP nanocrystals, while the impregnation vacuum freeze-drying strategy ensures the uniform distribution of AP crystals in pores, effectively achieving the size effect of AP nanocrystals (39.88 ∼ 55.50 nm). By adjusting the loading capacity of the AP, the AP-3DCNCs configuration was effectively controlled. The thermal decomposition of AP-3DCNCs is greatly enhanced due to their unique configuration. The high-temperature decomposition temperature is significantly reduced by 180.06–141.78 °C, and the maximum equivalent heat release increased by 2.03 times. It can be foreseen AP-3DCNCs are attractive nanocomposites for the thermal decomposition of AP, and these results provide a convenient strategy for the preparation of transition metal-based composite catalysts with promising applications in the field of solid propellants.
研究领域:
材料科学
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推进剂领域
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DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2019
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IF 2.722
Guo-quan Ma,Fu-sheng Liu,Sheng Wang,Zeng-chao Dang,Jia-wei Zhang,Xiao-jie Fu,Mei-shun Hou
A serial of Bi 2 S 3 /3DOM-TiO 2 (x-BS/3D-Ti, x denotes as the weight percentage of Bi 2 S 3 , x = 5, 10, 15, 20 and 25 wt%) were fabricated and their physico-chemical properties were characterized with the utilization of XRD , SEM, UV–Vis DRS and XPS . The photocatalytic performance was investigated based on photocatalytic degradation of rhodamine B (RhB) solution under simulated solar irradiation . The mechanisms for enhancing the photocatalytic activity and the degradation of RhB occurring on the BS/3D-Ti surface were discussed. The results indicated that 20-BS/3D-Ti exhibited the highest photocatalytic performance among the prepared samples. Although good adsorption property of BS/3D-Ti for RhB could promote the degradation of RhB, effective separation between photoinduced electron and hole was the key influencing factor compared to adsorption. The slightly reducing in the photocatalytic degradation rates after multiple cycles was caused by the adsorption of the oxidation intermediate product of RhB on the surface of BS/3D-Ti, which decreases the absorption of light.
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DOI
高影响因子
JOURNAL OF POROUS MATERIALS
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2020
·Vol. 28
·期 1
·109-116
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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
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催化化学
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材料科学
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环境化学
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能源化工
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Yejin Wang,Di Li,Miao He,Anqi Li,Jian Zhang,Yu Yang,Xuzhong Zeng,Xuening Bai,Xueming Li,Wenjing Yang
The Al/3DOM-CuBi 2 O 4 nanothermites with different contact extents were prepared using PMMA as a template. • 156 nm Al/3DOM-CuBi 2 O 4 has the best heat release and ignition characteristic. • DFT insights confirm strong electron transfer and adsorption capability in Al/CuBi 2 O 4 . • This thick microchip can be destroyed within a transient reaction for only 4 ms. Self-destructing microchips based on thermite reactions have emerged as an effective strategy for information security. However, conventional nanothermites suffer from unbalanced heat release, gas generation and pressure output, which severely restrict their destructive efficiency. Herein, we fabricated a three dimensionally ordered macroporous (3DOM) CuBi 2 O 4 /Al energetic composite via polymethyl methacrylate (PMMA) colloidal templating approach. Attributing to both the tunable pore sizes and distinct 3D structure of the CuBi 2 O 4 framework, the interfacial contact and diffusion length between fuel and oxidant can be effectively regulated. As a result, among the investigated samples, the system with a pore size of 156 nm exhibits the highest heat release of 1610.84 J/g, together with a peak pressure of 266 kPa and a pressurization rate of 1315 MPa/s. The optimized performance originates from an optimized balance between fuel-oxidizer interfacial contact and oxygen transport at an appropriate length scale, enabling efficient reaction propagation and enhanced reaction completeness. The 3DOM framework promotes uniform fuel distribution and efficient interfacial interactions, thereby facilitating rapid energy release. Density functional theory calculations further reveal enhanced electron transfer at the interface, supporting the accelerated reaction kinetics. More importantly, the fabricated energetic microchip can achieve complete physical self-destruction within 4 ms. The favorable combustion performance of Al/3DOM-CuBi 2 O 4 reveals the dependability of our proffered strategy for enhancing information security. Download: Download high-res image (208KB) Download: Download full-size image
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Wuxi zhang,Yingzhu Zi,Xinmin Bai,Imarn Khan,Asad ullah,Yue Liu,Anjun Huang,Jianbei Qiu,Yangke Cun,Zhengwen Yang
ABSTRACT The narrow band gap semiconductor LaFeO 3 with ABO 3 perovskite structure has been deeply studied in the field of photocatalysis due to its good thermal stability, chemical stability, photoelectric properties and suitable band position. The inverse opal structure gives the material a large specific surface area and increases the adsorption area and active site of the catalyst. In this work, it is reported for the first time that perovskite LaFeO 3 inverse opal was applied to photocatalytic hydrogen production. The Cd 0.7 Zn 0.3 S QDs were deposited on the skeleton wall of LaFeO 3 inverse opal to construct LaFeO 3 /Cd 0.7 Zn 0.3 S binary heterojunction catalyst. The LaFeO 3 3DOM can effectively increase the contact area with Cd 0.7 Zn 0.3 S QDs with an increase in specific surface area, and the multiple scattering effect improves the efficiency of light utilization. The introduction of Zn 2+ ions regulate the band gap position of Cd 0.7 Zn 0.3 S QDs and increases the thermodynamic reduction ability of photo generated electrons. The Z-type heterojunction effect formed by LaFeO 3 inverse opal and Cd 0.7 Zn 0.3 S QDs facilitates the separation and transmission of photo generated charges. The LaFeO 3 /Cd 0.7 Zn 0.3 S heterojunction catalysts achieved a hydrogen production performance of 277.48 μmol/g/h due to the large specific surface area of 3DOM, good light capture ability, band gap regulation of element doping, and efficient charge separation synergistic effect of heterojunction. This work provides new insights into the design and manufacture of perovskite-type 3DOM heterojunction photocatalysts.
研究领域:
材料科学
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光催化
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yue Chang,Ying Xuan,Huiying Quan,Hang Zhang,Shuangxi Liu,Zhengcao Li,Kai Yu,Jiangli Cao
As one of the most promising photocatalysts for hydrogen production from water splitting, conventional TiO 2 materials suffer from the low quantum yield and light absorption efficiency. The present study provided a strategy to improve efficiency of TiO 2 -based photocatalysts for hydrogen production from water splitting based on an interesting structure-property relationship. The hydrogen treated Au/TiO 2 photocatalysts with three-dimensionally ordered macroporous (3DOM) structure were successfully synthesized and well characterized through various methods. The 3DOM-structure and Au modification can promote the hydrogenation of TiO 2 . The light absorption can be improved by slow photon effect of the 3DOM structure. And, in the meanwhile, the hydrogenation as well as Au modification can improve the photogenerated carrier separation. In addition, to understand how hydrogenation and Au modification promote electron migration and decrease carrier recombination, the electric band structure for hydrogen treated Au/3DOM-TiO 2 was well studied and we found the local electron field enhancement, surface band bending and the generation of mid-gap state contributed most of enhancement.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2026
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IF 5.7
Zhen-Li Zhao,Lin-Dong Wang,Jun Chen,Han Li,Yao Rong,Li-Jia Niu,Jia-Xin Li,Jing Liu,Shokir Khojiev,Zhi-Yi Hu,Yu Li,Bao-Lian Su
3DOM NT-AH was obtained via synergistic reduction integrates Ni0/Ni2+ dual active centers and a NiO/TiO2 p-n heterojunction, enhancing electron transfer and charge separation to achieve a 16-fold increase in H2 evolution over unreduced 3DOM NT. Nickel oxide (NiO), owing to its tunable valence states and non-noble-metal cocatalytic properties, has shown great potential in photocatalytic hydrogen evolution. However, challenges remain in achieving highly dispersed loading, precise valence regulation, and optimized interfacial structures. Herein, we establish the Ni 0 /Ni 2+ dual active centers and NiO/TiO 2 p-n heterojunction in three-dimensionally ordered macroporous NiO x -TiO 2 -AH (3DOM NT-AH) composite photocatalyst for photocatalytic hydrogen production. In this unique structure, Ni 2+ species are favorable for forming a tightly coupled interfacial p-n heterojunction with TiO 2 , thereby promoting interfacial charge separation and directional carrier migration, while metallic Ni 0 acts as an efficient electron sink and electron-transfer mediator, facilitating rapid electron extraction and transport. Meanwhile, the highly dispersed NiO x nanoparticles are intimately anchored on the 3DOM TiO 2 (3DOM T) framework forming p-n heterojunction, further enhancing interfacial electron transfer and suppressing the recombination of photogenerated electron-hole pairs. The synergistic effect of the Ni 0 /Ni 2+ dual active centers and the p-n heterojunction makes that the optimized 3DOM NT-AH sample exhibits excellent photocatalytic hydrogen evolution performance, achieving a hydrogen evolution rate of 3.60 mmol·g −1 ·h −1 , which is about 16 times that of the unreduced 3DOM NiO-TiO 2 (3DOM NT) sample. This work provides a promising strategy for the design of efficient non-noble-metal Ni-based photocatalysts. Download: Download high-res image (201KB) Download: Download full-size image
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高影响因子
危险品化学品经营许可证（带存储）