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
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2017
·
IF 1.025
Xiuhua Li,Jian Lin,Junhong Zhao
A novel composite nanostructure which is made up of TiO 2 three dimensionally ordered macroporous (3DOM) nanostructure and TiO 2 nanorods (NRs) has been successfully synthesized through a combination of colloidal crystal template technology and hydrothermal method, then we achieved its combination with Ag nanoparticles (NPs) via a silver mirror reaction. We studied the SERS (Surface-Enhanced Raman Scattering) performance of the obtained structure, the results show that our samples are very sensitive substrates when being used to detect dye R6G molecules, with a low detection concentration of 10 − 1 1 M. This proves that it is a promising material in the area of analyzing and molecule-level detecting as a kind of novel and low-cost SERS substrate.
研究领域:
材料科学
·
纳米技术
·
光谱学
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2023
·Vol. 16
·期 7
·8871-8881
·
IF 9.9
Zhang Kunfeng,Chen Hongxia,Pei Wenbo,Dai Hongxing,Li Junshan,Zhu Yongfa
Herein, a series of three-dimensionally ordered macroporous (3DOM) Bi 4 O 5 Br 2 photocatalysts with different macropore sizes were successfully fabricated via a polymethyl methacrylate (PMMA) template method. The photocatalytic activity for phenol degradation over 3DOM Bi 4 O 5 Br 2 first increased and then decreased with the rise in macropore size. Specifically, 3DOM Bi 4 O 5 Br 2 -255 (macropore diameter ca. 170 nm) exhibits the best photocatalytic activity in the static system, which is about 4.5, 7.3, and 11.9 times higher than those of bulk Bi 4 O 5 Br 2 , Bi 2 WO 6 , and g-C 3 N 4 , respectively. Meanwhile, high phenol conversion (75%) is also obtained over 3DOM Bi 4 O 5 Br 2 -255 in the flow system under full spectrum irradiation. Furthermore, 3DOM Bi 4 O 5 Br 2 -255 also shows strong mineralization capacity owing to the downward shift of valance band position (0.15 V) as compared with Bi 4 O 5 Br 2 . Total organic carbon (TOC) removal rate over 3DOM Bi 4 O 5 Br 2 -255 (62%) is much higher than that of Bi 4 O 5 Br 2 (17%). The enhancement in photocatalytic performance of 3DOM Bi 4 O 5 Br 2 -255 is attributable to its better phenol adsorption, O 2 activation, and charge separation and transfer abilities. This work combines the advantages of 3D structure and surface dangling bonds, providing new possibilities for designing highly efficient photocatalysts for pollutants removal.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2021
·Vol. 28
·期 5
·1-10
·
IF 3.097
Lin Yali,Liu Yu,Li Siqi,Rui Lili,Ou Jiming,Wu Quanzhou,He Jianfeng
A kind of novel three-dimensionally ordered macroporous molecularly imprinted microspheres (3DMIMs) had been developed for selective recognition and separation of quinine based on the combination of colloidal crystal templating method and molecular imprinting technique. The 3DMIMs were derived from the spherical silica colloidal crystal involving a four-step templating process including infiltration of imprinted precursors, sealing of polyethylene glycol, initiation polymerization, as well as final removal of the colloidal crystal and imprinting template. The resulted 3DMIMs consisted of a three-dimensional, highly ordered and interconnected macroporous arrays with nanoscale thickness of polymer wall, in which numerous imprinted cavities were obtained. The kinetic and isothermal adsorption behavior of the 3DMIMs were investigated in detail. The results showed the 3DMIMs had a rapider mass transfer process, higher adsorption capacities and recognition specificity toward quinine compared with the traditional bulk imprinted polymers. In addition, the 3DMIMs exhibited obvious high permeability and low backpressure at high flow rate as column packing. Extraction experiments showed that the 3DMIMs could effectively separate quinine and its diastereoisomer, quinidine, directly from crude cinchona bark extract with a satisfactory selectivity and elution recovery.
研究领域:
材料科学
·
药物化学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2012
·
IF 3.628
Yuling Xie,Yanli Liu,Yan Wang,Siling Wang,Tongying Jiang
Three dimensionally ordered macroporous (3DOM) chitosan (3D-CS) matrix with interconnected pores in the nanometer range was developed as a drug carrier for the first time. 3D-CS was prepared using a template-assisted assembly and characterized by SEM, TGA, N 2 adsorption and FT-IR. As a model drug, nimodipine (NMDP) was incorporated into the pores of 3D-CS matrix. The solid state properties of NMDP-loaded samples were characterized by SEM, XRD, DSC and FT-IR. Dissolution studies showed that release behavior of the drug was markedly affected by the particle size of the matrix. With a relatively small matrix particle size, formulations of NMDP-3D-CS-0.5 and NMDP-3D-CS-1 exhibited rapid release patterns. However, on increasing the amount of carrier, release rate of the drug decreased. The pH-dependent slow-release characteristic of 3D-CS matrix delivery system was demonstrated by investigating the release behavior of NMDP at different pH values.
研究领域:
药剂学
·
生物材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLID STATE IONICS
·
2024
·
IF 3
Xin Zhao,Jian Zhang,Xuanlin Lu,Wen Liu,Jiaxuan Chen,Yicheng Zhao,Yongdan Li
Self-assembled La 0.7 Sr 0.3 Fe 0.9 Ni 0.1 O 3-δ -Ce 0.8 Sm 0.2 O 1.9-δ (LSFN-SDC) composite cathode with a three-dimensionally ordered macroporous (3DOM) structure is synthesized using poly(methyl methacrylate) as the template for protonic ceramic fuel cells . The LSFN and SDC phases both distribute uniformly in the cathode. The SDC phase reduces the thickness of the walls of the 3DOM structure and thus hinders the bulk conduction of electrons. SDC also decreases the specific surface area and the surface oxygen reactivity of the cathode, leading to the suppression of the adsorption and dissociation of O 2 . However, the SDC phase provides the conduction pathway for oxygen ions and enlarges three phase boundary consequently, which facilitates the charge transfer steps. The thickness of the walls and the specific surface area of the composite cathode are both increased with the rise of the concentration of the nitrate precursor solution, resulting in the acceleration of the cathode process. Nevertheless, an excessive precursor concentration leads to the destroy of the 3DOM structure. The 3DOM composite cathode exhibits the lowest R p of 0.039 Ω cm 2 , and a single cell with that cathode shows maximum power density of 1484 mW cm −2 at 700 °C. The cell exhibits a short-term stability of 120 h at 700 °C without noticeable degradation.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Peng Zhao,Xingke Ye,Yucan Zhu,Hedong Jiang,Lingling Wang,Ziyu Yue,Zhongquan Wan,Chunyang Jia
Binary metal oxides are considered as promising electrode materials due to the higher electrochemical activity than mono metal oxides. However, the poor conductivity and aggregation of binary metal oxides impede ion and electron transport kinetics, which deteriorates their electrochemical performances. Herein, we design and fabricate three-dimensional ordered macroporous NiFe 2 O 4 on carbon yarn, in which a core of carbon yarn is covered with the sheath of three-dimensional ordered macroporous NiFe 2 O 4 . The three-dimensional ordered macroporous structure is feature with abundant transportation shortcuts for electrolyte ions and excellent structural stability, thus offering great advantages for efficient fibriform supercapacitor . The fibriform supercapacitor is further assembled using two intertwined three-dimensional ordered macroporous NiFe 2 O 4 -carbon yarn electrodes, both of which are solidified in the KOH-polyvinyl alcohol gel electrolyte. The assembled fibriform supercapacitor exhibits high specific capacitance (247 μF cm -1 at scan rate of 10 mV s −1 ) and robust cycling stability (96% capacitance retention after 8000 cycles). Furthermore, the fibriform supercapacitor shows substantial mechanical flexibility with minor capacitance decrease upon continuous bending cycles, and the knitted fibriform supercapacitor exhibits the excellent wearability and integration. Thus, the as-prepared fibriform supercapacitor shows great promise as the energy storage unit for wearable electronics.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiaoqing Shang,Qingyong Tian,Bo Gao,Weijing Yao,Zongwei Chen,Junhao Huang,Liyuan Zhou,Hongpo Liu,Wenzhuo Wu,Qun Xu
Development of high-efficiency photocatalyst for solar-driven hydrogen (H 2 ) generation still encounters significant challenges. The biomimetic materials with a multistage structure are advantageous for enhancing light harvesting and utilization, as well as facilitating the efficient separation of photon-generated electron-hole pairs, thus play a crucial role in improving photocatalytic efficiency. Herein, the present study demonstrates the design of ZnIn 2 S 4 -TiO 2 (ZIS/T) biomimetic multistage heterostructure with three-dimensionally ordered macroporous (3DOM) structure for efficient H 2 generation. The optimal ZIS/T heterostructure photocatalyst by carefully regulating the interface structure exhibits the superior H 2 generation rate of 9.05 mmol · h −1 · g −1 , surpassing the rates observed in 3DOM TiO 2 and ZnIn 2 S 4 samples by 11 and 4.1 times, respectively. The significantly improved photocatalytic efficiency was primarily attributed to the unique multistage structure that provide with abundant reactive sites and excellent mass transfer ability. Furthermore, the slow photon effect induced by the particular 3DOM multistage heterojunctions promote separation of photon-generated carriers. This resultant work provides a novel strategy for the construction of photo-confined heterojunction photocatalysts with enhanced photocatalytic performance through interfacial engineering.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 20
·5989-5997
·
IF 5
Canyang Qu,Ping Wang,Miao He,Cheng Yang,Jing Xiong,Xiaohua Sun,Yuechang Wei,Zhenxing Li
NOx is one of the main sources of air pollution, which primarily comes from automobile exhausts. Rare earth-based catalysts for NO oxidation have excellent oxygen storage and release performance and good structural stability. Herein, a series of three-dimensional ordered microporous (3DOM) cerium–manganese composite oxide catalysts with different cerium–manganese ratios for NO oxidation were prepared by the sol–gel method. The 3DOM structure improves the contact efficiency of the NO, soot and the catalyst. By incorporating Mn3+ ions into the cerium oxide lattice, a Ce–Mn solid solution forms with an ordered macroporous structure, and the interaction between cerium and manganese significantly increases the amount of reactive oxygen species. The catalyst with the optimal cerium–manganese ratio (1 : 2) was able to achieve a conversion rate of 62% at 250 °C, and the highest conversion rate reached 98%, which is far higher than pure cerium oxide and pure manganese oxide catalysts. This work provides a promising catalyst for NO oxidation and soot combustion applications.
研究领域:
环境科学
·
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 23
·13065-13076
·
IF 3.049
Yuzhe Zhang,Tingting Bian,Da Xia,Dandan Wang,Yi Zhang,Xudong Zheng,Zhongyu Li
Although bio-materials are widely used for the adsorption of heavy metal ions, they have low specific surface area, slow adsorption rates, and poor selectivity. To overcome these limitations, in this study, we report a 3D-ordered macroporous ion-imprinted chitosan film (3DOM-IICF); the 3DOM-IICF coupled with a colloidal crystal template and ion imprinting (IIP) technology has been used to absorb copper ions (Cu(II)) present in water. Moreover, polystyrene (PS) micro-spheres and copper templates were added to form a three-dimensional ordered macroporous structure and ion-imprinted sites, respectively. Finally, the film was formed by drying. Adsorption experiments showed the removal of Cu(II) from the 3DOM-IICF in an aqueous solution. The 3DOM-IICF exhibited good adsorption performance under neutral conditions of pH = 7.0, and the adsorption efficiency was high. The maximum adsorption capacity of the 3DOM-IICF was 261.31 mg g−1. The adsorption processes were more consistent with the pseudo-second-order kinetic model and the Langmuir isotherm. The 3DOM-IICF exhibits superior selective adsorption of Cu(II). Moreover, the 3DOM-IICF could be regenerated multiple times, reused as an adsorbent and maintained high adsorption capacity. This kind of imprinted template method has important significance in the selective adsorption of pollutants in bio-materials and is worthy of in-depth research.
研究领域:
环境科学
·
材料科学
·
生物工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Huawen Huang,Christian Atangana Etogo,Chen Chen,Ran Bi,Lei Zhang
Recently, potassium-ion batteries (PIBs) have been deemed to be a potential next-generation energy storage system for large-scale application because of the similar metal-ion storage mechanism as lithium-ion batteries and rich potassium resources. However, the large-sized potassium ion will cause sluggish reaction kinetics of K+ during charge/discharge processes, hindering the development of high-performance PIBs. In this work, copper sulfide embedded in three-dimensional ordered macroporous carbon framework (3DOM Cu9S5@C) was prepared through a sulfidation and subsequent ion exchange strategy with 3D ordered macropore Zn-based metal–organic frameworks as a precursor for an advanced PIBs anode. In particular, the interconnected 3D ordered macroporous structure can provide rapid transport channels for the large potassium ions and create a sufficient contact area for solid electrode materials and the liquid electrolyte, which is conducive to improve the ionic diffusion kinetics of batteries. Consequently, when the prepared 3DOM Cu9S5@C composite was used as a PIBs anode material, it shows a remarkable potassium storage rate capacity of 170 mA h g–1 at 2.0 A g–1 and an excellent cycling stability of 316 mA h g–1 at 100 mA g–1 after 200 cycles.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
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
危险品化学品经营许可证（带存储）