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Feng X, Zeng J, Zhu J, Song K, Zhou X, Guo X, Xie C, Shi JW. Gd-modified Mn-Co oxides derived from layered double hydroxides for improved catalytic activity and H 2O/SO 2 tolerance in NH 3-SCR of NO x reaction. J Colloid Interface Sci 2024; 659:1063-1071. [PMID: 38212197 DOI: 10.1016/j.jcis.2024.01.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/01/2024] [Accepted: 01/06/2024] [Indexed: 01/13/2024]
Abstract
Metal oxides derived from layered double hydroxides (LDHs) are expected to obtain low-temperature denitrification (de-NOx) catalysts with high catalytic activity and H2O/SO2 tolerance in the selective catalytic reduction (SCR) of NOx with NH3. In current work, we successfully prepared Gd-modified Mn-Co metal oxides derived from Gd-modified Mn-Co LDHs. The resultant Gd-modified Mn-Co metal oxides exhibit excellent catalytic activity and high H2O/SO2 tolerance in the NH3-SCR de-NOx reaction. The reasons for the enhancement can be ascribed to the unique surface physicochemical properties inherited from LDHs and the modification of Gd, which increase the specific surface area, improve the relative content of Mn4+ and Co3+ on the surface, enhance the number of acidic sites, strengthen the reducibility of catalyst, resulting in the enhanced catalytic activity and H2O/SO2 tolerance. Additionally, it is demonstrated that the NH3-SCR de-NOx reaction occurred on the surface of Gd-modified Mn-Co oxides followed both Eley-Rideal (E-R) and Langmuir-Hinshelwood (L-H) mechanisms. This study provides us with a design approach to promote catalytic activity and H2O/SO2 tolerance through morphology control and rare earth modification.
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Affiliation(s)
- Xiangbo Feng
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi'an 710123, Shaanxi, China
| | - Jialing Zeng
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi'an 710123, Shaanxi, China
| | - Jianru Zhu
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Kunli Song
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Xinya Zhou
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Xuanlin Guo
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Chong Xie
- Xi'an Key Laboratory of New Energy Materials and Devices, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China.
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2
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Xu X, Feng X, Wang W, Song K, Ma D, Zhou Y, Shi JW. Construction of II-type and Z-scheme binding structure in P-doped graphitic carbon nitride loaded with ZnO and ZnTCPP boosting photocatalytic hydrogen evolution. J Colloid Interface Sci 2023; 651:669-677. [PMID: 37562308 DOI: 10.1016/j.jcis.2023.08.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 07/25/2023] [Accepted: 08/05/2023] [Indexed: 08/12/2023]
Abstract
A ternary heterostructure (ZnPPO) was constructed by loading ZnO and tetrakis (4-carboxyphenyl) zinc porphyrin (ZnTCPP) with P-doped g-C3N4 (PCN). In contrast to binary heterostructures (PCN-ZnO, ZnTCPP-ZnO and ZnTCPP-PCN) and single components (PCN, ZnTCPP and ZnO), ZnPPO has superior photocatalytic activity for H2 generation from water splitting. It is revealed that a binding structure of Ⅱ-type and Z-scheme has been constructed in ZnPPO, which plays a vital role in transferring photo-excited charge carriers. The significant enhancement of photocatalytic activity in ZnPPO is attributed to the effective transfer of photo-generated electrons and holes between the components of the ternary heterostructure.
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Affiliation(s)
- Xuan Xu
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi'an 710123, Shaanxi, China; State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Xiangbo Feng
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi'an 710123, Shaanxi, China.
| | - Wei Wang
- Market Department, China Construction Third Bureau Green Industry Investment Co. Ltd, Wuhan 430056, China
| | - Kunli Song
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Dandan Ma
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Yixuan Zhou
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China.
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3
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Yao T, Wang H, Ji X, Wang D, Zhang Q, Meng L, Shi JW, Han X, Cheng Y. Introducing Hybrid Defects of Silicon Doping and Oxygen Vacancies into MOF-Derived TiO 2-X @Carbon Nanotablets Toward High-Performance Sodium-Ion Storage. Small 2023; 19:e2302831. [PMID: 37199134 DOI: 10.1002/smll.202302831] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/04/2023] [Indexed: 05/19/2023]
Abstract
Titanium dioxide (TiO2 ) is a promising anode material for sodium-ion batteries (SIBs), which suffer from the intrinsic sluggish ion transferability and poor conductivity. To overcome these drawbacks, a facile strategy is developed to synergistically engineer the lattice defects (i.e., heteroatom doping and oxygen vacancy generation) and the fine microstructure (i.e., carbon hybridization and porous structure) of TiO2 -based anode, which efficiently enhances the sodium storage performance. Herein, it is successfully realized that the Si-doping into the MIL-125 metal-organic framework structure, which can be easily converted to SiO2 /TiO2-x @C nanotablets by annealing under inert atmosphere. After NaOH etching SiO2 /TiO2-x @C which contains unbonded SiO2 and chemically bonded SiOTi, thus the lattice Si-doped TiO2-x @C (Si-TiO2-x @C) nanotablets with rich Ti3+ /oxygen vacancies and abundant inner pores are developed. When examined as an anode for SIB, the Si-TiO2-x @C exhibits a high sodium storage capacity (285 mAh g-1 at 0.2 A g-1 ), excellent long-term cycling, and high-rate performances (190 mAh g-1 at 2 A g-1 after 2500 cycles with 95.1% capacity retention). Theoretical calculations indicate that the rich Ti3+ /oxygen vacancies and Si-doping synergistically contribute to a narrowed bandgap and lower sodiation barrier, which thus lead to fast electron/ion transfer coefficients and the predominant pseudocapacitive sodium storage behavior.
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Affiliation(s)
- Tianhao Yao
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Hongkang Wang
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Xin Ji
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Deyu Wang
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan, 430056, P. R. China
| | - Qingmiao Zhang
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Lingjie Meng
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Material Chemistry, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- Instrumental Analysis Center, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Jian-Wen Shi
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Xiaogang Han
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Yonghong Cheng
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
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Wang B, Feng X, Xu Y, Shi JW. Role of Ce in promoting low-temperature performance and hydrothermal stability of Ce/Cu-SSZ-13 in the selective catalytic reduction of NOx with NH3. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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Song K, Guo K, Mao S, Ma D, Lv Y, He C, Wang H, Cheng Y, Shi JW. Insight into the Origin of Excellent SO 2 Tolerance and de-NO x Performance of quasi-Mn-BTC in the Low-Temperature Catalytic Reduction of Nitrogen Oxide. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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Galushchinskiy A, Zou Y, Odutola J, Nikačević P, Shi JW, Tkachenko N, López N, Farràs P, Savateev O. Insights into the Role of Graphitic Carbon Nitride as a Photobase in Proton-Coupled Electron Transfer in (sp3)C-H Oxygenation of Oxazolidinones. Angew Chem Int Ed Engl 2023; 62:e202301815. [PMID: 36852584 DOI: 10.1002/anie.202301815] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/26/2023] [Accepted: 02/27/2023] [Indexed: 03/01/2023]
Abstract
Graphitic carbon nitride (g-CN) is a transition metal free semiconductor that mediates a variety of photocatalytic reactions. Although photoinduced electron transfer is often postulated in the mechanism, proton-coupled electron transfer (PCET) is more favorable pathway for substrates possessing X-H bonds. Upon excitation of an (sp2)N-rich structure of g-CN with visible light, it behaves as a photobase - undergoes reductive quenching accompanied by abstraction of a proton from a substrate. The results of modelling allowed us to identify active sites for PCET - the 'triangular pockets' on the edge facets of g-CN. We employ excited state PCET from the substrate to g-CN to cleave selectively endo-(sp3)C-H bond in oxazolidine-2-ones followed by trapping the radical with O2. This reaction affords 1,3-oxazolidine-2,4-diones. Measurement of apparent pKa value and modeling suggest that g-CN excited state can cleave X-H bonds that are characterized by bond dissociation free energy (BDFE) ~100 kcal mol-1.
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Affiliation(s)
- Alexey Galushchinskiy
- Max Planck Institute of Colloids and Interfaces: Max-Planck-Institut fur Kolloid und Grenzflachenforschung, Colloid chemistry, GERMANY
| | - Yajun Zou
- Xi'an Jiaotong University, School of Electrical Engineering, CHINA
| | | | - Pavle Nikačević
- Institut Catala d'Investigacio Quimica, Theoretical Heterogeneous Catalysis Group, SPAIN
| | - Jian-Wen Shi
- Xi'an Jiaotong University, School of Electrical Engineering, CHINA
| | | | - Núria López
- Institut Catala d'Investigacio Quimica, Theoretical Heterogeneous Catalysis Group, SPAIN
| | - Pau Farràs
- University of Galway, School of Biological and Chemical Sciences, IRELAND
| | - Oleksandr Savateev
- Max-Planck-Institut fur Kolloid und Grenzflachenforschung, Colloid chemistry, Am Muehlenberg 1, 14476, Potsdam, GERMANY
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Galushchinskiy A, Zou Y, Odutola J, Nikačević P, Shi JW, Tkachenko N, López N, Farràs P, Savateev O. Insights into the Role of Graphitic Carbon Nitride as a Photobase in Proton‐Coupled Electron Transfer in (sp3)C‒H Oxygenation of Oxazolidinones. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202301815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Affiliation(s)
- Alexey Galushchinskiy
- Max Planck Institute of Colloids and Interfaces: Max-Planck-Institut fur Kolloid und Grenzflachenforschung Colloid chemistry GERMANY
| | - Yajun Zou
- Xi'an Jiaotong University School of Electrical Engineering CHINA
| | | | - Pavle Nikačević
- Institut Catala d'Investigacio Quimica Theoretical Heterogeneous Catalysis Group SPAIN
| | - Jian-Wen Shi
- Xi'an Jiaotong University School of Electrical Engineering CHINA
| | | | - Núria López
- Institut Catala d'Investigacio Quimica Theoretical Heterogeneous Catalysis Group SPAIN
| | - Pau Farràs
- University of Galway School of Biological and Chemical Sciences IRELAND
| | - Oleksandr Savateev
- Max-Planck-Institut fur Kolloid und Grenzflachenforschung Colloid chemistry Am Muehlenberg 1 14476 Potsdam GERMANY
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Song K, Guo K, Lv Y, Ma D, Cheng Y, Shi JW. Rational Regulation of Reducibility and Acid Site on Mn-Fe-BTC to Achieve High Low-Temperature Catalytic Denitration Performance. ACS Appl Mater Interfaces 2023; 15:4132-4143. [PMID: 36631929 DOI: 10.1021/acsami.2c20545] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Selective catalytic reduction with ammonia is the mainstream technology of flue gas denitration (de-NOx). The reducibility and acid site are two important factors affecting the de-NOx performance, and effective regulation between them is the key to obtain a highly efficient de-NOx catalyst. Herein, a series of Mn-Fe-BTC with different ratios of Mn and Fe are synthesized, among which 2Mn-1Fe-BTC with 2:1 molar ratio of Mn and Fe has excellent low-temperature (LT) de-NOx performance (above 90% NO conversion between 60 and 270 °C) and good tolerance to H2O and SO2 poisoning (88% NO conversion at 150 °C with 100 ppm of SO2 and/or 6% H2O). It is revealed that the reducibility properties and acid sites of Mn-Fe-BTC can be flexibly tuned by the ratio of Mn and Fe. The difference in electronegativity between Fe and Mn leads to the redistribution of valence electrons, which enables the controllable reducibility of Mn-Fe-BTC. Furthermore, different amounts of Mn and Fe lead to different electron transport, which determines the type and number of acid sites. The synergistic effect of Mn and Fe endows Mn-Fe-BTC with enhanced surface molecular adsorption capacity and enables the catalyst to selectively chemisorb NH3 and NO at different active sites. This research provides guidance for the flexible regulation of reducibility and acid site of LT de-NOx catalyst.
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Affiliation(s)
- Kunli Song
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Kaiyu Guo
- State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yixuan Lv
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Dandan Ma
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yonghong Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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Song K, Zhao S, Li Z, Li K, Xu Y, Zhang Y, Cheng Y, Shi JW. Zinc and phosphorus poisoning tolerance of Cu-SSZ-13 and Ce-Cu-SSZ-13 in the catalytic reduction of nitrogen oxides. J Colloid Interface Sci 2023; 629:243-255. [DOI: 10.1016/j.jcis.2022.08.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 10/14/2022]
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Zhao S, Song K, Zhu J, Ma D, Shi JW. Gd-Mn-Ti composite oxides anchored on waste coal fly ash for the low-temperature catalytic reduction of nitrogen oxide. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Wang B, Song K, Li Z, Li K, Shi JW. One-pot synthesis of rare earth modified Cu/SAPO-34 for enhanced selective catalytic reduction denitration performance. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2022]
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Mao S, Shi JW, Sun G, Zhang Y, Ma D, Song K, Lv Y, Zhou J, Wang H, Cheng Y. PdS Quantum Dots as a Hole Attractor Encapsulated into the MOF@Cd 0.5Zn 0.5S Heterostructure for Boosting Photocatalytic Hydrogen Evolution under Visible Light. ACS Appl Mater Interfaces 2022; 14:48770-48779. [PMID: 36259606 DOI: 10.1021/acsami.2c15052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Herein, a new photocatalyst PdS@UiOS@CZS is successfully synthesized, where thiol-functionalized UiO-66 (UiOS), a metal-organic framework (MOF) material, is used as a host to encapsulate PdS quantum dots (QDs) in its cages, and Cd0.5Zn0.5S (CZS) solid solution nanoparticles (NPs) are anchored on its outer surface. The resultant PdS@UiOS@CZS with an optimal ratio between components displays an excellent photocatalytic H2 evolution rate of 46.1 mmol h-1 g-1 under visible light irradiation (420∼780 nm), which is 512.0, 9.2, and 5.9 times that of pure UiOS, CZS, and UiOS@CZS, respectively. The reason for the significantly enhanced performance is that the encapsulated PdS QDs strongly attract the photogenerated holes into the pores of UiOS, while the photogenerated electrons are effectively migrated to CZS due to the heterojunction effect, thereby effectively suppressing the recombination of charge carriers for further high-efficiency hydrogen production. This work provides an idea for developing efficient photocatalysts induced by hole attraction.
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Affiliation(s)
- Siman Mao
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Guotai Sun
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yijun Zhang
- Key Laboratory of Electronic Ceramics and Devices of Ministry of Education, Department of Electronics and Information, Xi'an Jiaotong University, Xi'an 710049, China
| | - Dandan Ma
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Kunli Song
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yixuan Lv
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jun Zhou
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hongkang Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yonghong Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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Pu Z, Xiao B, Mao S, Sun Y, Ma D, Wang H, Zhou J, Cheng Y, Shi JW. An electron-hole separation mechanism caused by the pseudo-gap formed at the interfacial Co-N bond between cobalt porphyrin metal organic framework and boron-doped g-C 3N 4 for boosting photocatalytic H 2 production. J Colloid Interface Sci 2022; 628:477-487. [PMID: 35998470 DOI: 10.1016/j.jcis.2022.08.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 10/15/2022]
Abstract
Photocatalytic hydrogen evolution from water splitting presents an attractive prospect in dealing with the energy crisis, but the low efficiency of charge separation and migration still seriously hinders its further practical application. Here, an acidified boron-doped g-C3N4 (HBCNN) and cobalt porphyrin metal organic frameworks (CoPMOF) self-assembled two-dimensional and two-dimensional (2D/2D) hybrid photocatalyst is fabricated successfully. The resultant HBCNN/CoPMOF with optimum ratio exhibits a superior H2 evolution rate of 33.17 mmol g-1 h-1, which is 3.04 and 100.50 times higher than the single HBCNN and CoPMOF, respectively. It is found that a coordination connection has formed between CoPMOF and HBCNN through Co-N bond, and the interfacial Co-N bond then forms a pseudo-gap in the up-spin channel of electronic states, establishing an electron-hole separation mechanism. It is this electron-hole separation mechanism that contributes to a Z-scheme transport mode of photogenerated carriers, which greatly promotes the photocatalytic H2 production performance of HBCNN/CoPMOF heterostructure. This work may provide an idea for the design of heterojunction to improve the photocatalytic performance by constructing electron-hole separation through interfacial bond.
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Affiliation(s)
- Zengxin Pu
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Bing Xiao
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Siman Mao
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yingxue Sun
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Dandan Ma
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hongkang Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jun Zhou
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yonghong Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
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Tian M, Jiang Z, Chen C, Kosari M, Li X, Jian Y, Huang Y, Zhang J, Li L, Shi JW, Zhao Y, He C. Engineering Ru/MnCo 3O x for 1,2-Dichloroethane Benign Destruction by Strengthening C–Cl Cleavage and Chlorine Desorption: Decisive Role of H 2O and Reaction Mechanism. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02304] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mingjiao Tian
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Zeyu Jiang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
- Department of Chemistry, National University of Singapore, Singapore 117534, Singapore
| | - Changwei Chen
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 119260, Singapore
| | - Mohammadreza Kosari
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 119260, Singapore
| | - Xinzhe Li
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Yanfei Jian
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
| | - Yu Huang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
| | - Jingjie Zhang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
| | - Lu Li
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
| | - Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
| | - Yaruo Zhao
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
| | - Chi He
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, P.R. China
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, P. R. China
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15
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Qian R, Yao M, Xiao F, Yao T, Lu H, Liu Y, Shi JW, Cheng Y, Wang H. Polyvinylpyrrolidone regulated synthesis of mesoporous titanium niobium oxide as high-performance anode for lithium-ion batteries. J Colloid Interface Sci 2022; 608:1782-1791. [PMID: 34743047 DOI: 10.1016/j.jcis.2021.10.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/16/2021] [Accepted: 10/13/2021] [Indexed: 11/16/2022]
Abstract
TiNb2O7 (TNO) as a promising candidate anode for lithium-ion batteries (LIBs) shows obvious advantages in terms of specific capacity and safety, but which undergoes the intrinsic poor electrical and ionic conductivity. Herein, we propose a simple synthesis strategy of mesoporous TNO via a polymeric surfactant-mediated evaporation-induced sol-gel method, using polyvinylpyrrolidone (PVP) with different molecular weights (average Mw: 10000/58000/1300000) as the regulating agent, which greatly affects the lithium storage performance of the as-prepared TNO. The optimized TNO (i.e., PVP of 58000) delivers a high reversible capacity of 303.1 mAh/g at 1 C, with a retention rate of 73.4% (222.5 mAh/g) after 300 cycles. Even at 5 C, a high reversible capacity of 185.6 mAh/g can be achieved, with a retention rate of 72.3% after 1000 cycles. The superior lithium storage behavior is attributed to the fine mesoporous framework consisting of interconnected TNO nanocrystallites with high specific surface area and high mesoporosity, which greatly increases the active sites, improves the Li+ diffusion kinetics and alleviates volume fluctuation induced by the repetitive Li+ insertion-extraction processes.
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Affiliation(s)
- Ruifeng Qian
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Menglong Yao
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Fengping Xiao
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650500, China.
| | - Tianhao Yao
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Huiying Lu
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yan Liu
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian-Wen Shi
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yonghong Cheng
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hongkang Wang
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
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16
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Gu M, Zhang L, Mao S, Zou Y, Ma D, Shi JW, Yang N, Fu C, Zhao X, Xu X, Cheng Y, Zhang J. Violet Phosphorus: An Effective Metal-Free Elemental Photocatalyst for Hydrogen Evolution. Chem Commun (Camb) 2022; 58:12811-12814. [DOI: 10.1039/d2cc04461g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Violet phosphorus, a non-metallic elemental layered structure, has not been reported as photocatalyst due to the lack of violet phosphorus. An excellent photocatalytic H2 evolution rate of 675±109 μmolh-1g-1 with...
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17
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Sun G, Xiao B, Shi JW, Mao S, He C, Ma D, Cheng Y. Hydrogen spillover effect induced by ascorbic acid in CdS/NiO core-shell p-n heterojunction for significantly enhanced photocatalytic H 2 evolution. J Colloid Interface Sci 2021; 596:215-224. [PMID: 33845229 DOI: 10.1016/j.jcis.2021.03.150] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/20/2021] [Accepted: 03/27/2021] [Indexed: 12/25/2022]
Abstract
A new variety of CdS/NiO core-shell p-n heterojunction is synthesized by in-situ chemically depositing NiO shell on single-crystal CdS nanorods for the first time. With this method, the range of NiO shell thickness can be accurately controlled within a few nanometers. The optimized CdS/NiO sample (CSN0.5) with a NiO shell layer of 1.5 nm exhibits a highly efficient photocatalytic H2 evolution rate of 731.7 μmol/h (corresponding to 243.9 mmol/g/h) without using co-catalyst, which is among the highest value of all the CdS-based photocatalysts. The apparent quantum efficiency (AQE) of CSN0.5 at 365 nm wavelength reaches 28.19%. The remarkably enhanced photocatalytic performance can be attributed to a hydrogen spillover effect induced by ascorbic acid in CdS/NiO, which promotes the transmission of adsorbed H* from hydrogen-rich NiO (electron-poor region) to hydrogen-poor CdS (electron-rich region) where the adsorbed H* reacts in time with the photogenerated electron to produce H2, facilitating the H2 evolution reaction. This work provides a method to promote the photocatalytic H2 evolution reaction by using hydrogen spillover effect.
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Affiliation(s)
- Guotai Sun
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China; Center for Nano Energy Materials, State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Bing Xiao
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Siman Mao
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Chi He
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Dandan Ma
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yonghong Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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18
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Zou Y, Xiao K, Qin Q, Shi JW, Heil T, Markushyna Y, Jiang L, Antonietti M, Savateev A. Enhanced Organic Photocatalysis in Confined Flow through a Carbon Nitride Nanotube Membrane with Conversions in the Millisecond Regime. ACS Nano 2021; 15:6551-6561. [PMID: 33822587 PMCID: PMC8155341 DOI: 10.1021/acsnano.0c09661] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Bioinspired nanoconfined catalysis has developed to become an important tool for improving the performance of a wide range of chemical reactions. However, photocatalysis in a nanoconfined environment remains largely unexplored. Here, we report the application of a free-standing and flow-through carbon nitride nanotube (CNN) membrane with pore diameters of 40 nm for confined photocatalytic reactions where reactants are in contact with the catalyst for <65 ms, as calculated from the flow. Due to the well-defined tubular structure of the membrane, we are able to assess quantitatively the photocatalytic performance in each of the parallelized single carbon nitride nanotubes, which act as spatially isolated nanoreactors. In oxidation of benzylamine, the confined reaction shows an improved performance when compared to the corresponding bulk reaction, reaching a turnover frequency of (9.63 ± 1.87) × 105 s-1. Such high rates are otherwise only known for special enzymes and are clearly attributed to the confinement of the studied reactions within the one-dimensional nanochannels of the CNN membrane. Namely, a concave surface maintains the internal electric field induced by the polar surface of the carbon nitride inside the nanotube, which is essential for polarization of reagent molecules and extension of the lifetime of the photogenerated charge carriers. The enhanced flow rate upon confinement provides crucial insight on catalysis in such an environment from a physical chemistry perspective. This confinement strategy is envisioned not only to realize highly efficient reactions but also to gain a fundamental understanding of complex chemical processes.
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Affiliation(s)
- Yajun Zou
- State
Key Laboratory of Electrical Insulation and Power Equipment, Center
of Nanomaterials for Renewable Energy, School
of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Kai Xiao
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Qing Qin
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Jian-Wen Shi
- State
Key Laboratory of Electrical Insulation and Power Equipment, Center
of Nanomaterials for Renewable Energy, School
of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
| | - Tobias Heil
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Yevheniia Markushyna
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Lei Jiang
- Key
Laboratory of Bio-inspired Materials and Interfacial Science, Technical
Institute of Physics and Chemistry, Chinese
Academy of Sciences, Beijing 100190, People’s Republic
of China
| | - Markus Antonietti
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Aleksandr Savateev
- Department
of Colloid Chemistry, Max Planck Institute
of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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19
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Xie C, Shan H, Song X, Chen L, Wang J, Shi JW, Hu J, Zhang J, Li X. Flexible S@C-CNTs cathodes with robust mechanical strength via blade-coating for lithium-sulfur batteries. J Colloid Interface Sci 2021; 592:448-454. [PMID: 33714763 DOI: 10.1016/j.jcis.2021.02.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/10/2021] [Accepted: 02/14/2021] [Indexed: 10/22/2022]
Abstract
Lithium sulfur batteries (LSBs) with high energy density hold some promising applications in the wearable and flexible devices. However, it has been still challenging to develop a simple and feasible approach to prepare flexible LSB cathodes with both robust mechanical strength. Herein, flexible S@C-CNTs cathodes with controllable thicknesses are successfully fabricated via a facile blade-coating method. Due to the strong cohesion among CNTs bundles and the well-designed structure, the flexible S@C-CNTs cathodes are demonstrated to be with a combination of impressive mechanical strength and enhanced electrochemical performance. For the flexible S@C-CNTs cathodes with the sulfur mass loading of 4 mg cm-2, the areal capacity is close to 3.0 mA h cm-2, and the breaking stress is up to 5.59 MPa with 7.77% strain. Meanwhile, the pouch cell exhibits excellent cyclic stability at both flat/bent conditions. All demonstrate that the flexible S@C-CNTs cathodes may satisfy the demands of practical application. Moreover, this methodology is suitable for designing other flexible battery electrodes, such as flexible Si@C-CNTs anodes for lithium ion batteries, flexible P@C-CNTs anodes for sodium/potassium ion batteries, etc.
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Affiliation(s)
- Chong Xie
- Xi'an Key Laboratory of New Energy Materials and Devices, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China; Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, Xi'an, Shaanxi 710048, China
| | - Hui Shan
- Xi'an Key Laboratory of New Energy Materials and Devices, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China; Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, Xi'an, Shaanxi 710048, China
| | - Xuexia Song
- Xi'an Key Laboratory of New Energy Materials and Devices, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China; Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, Xi'an, Shaanxi 710048, China
| | - Liping Chen
- Xi'an Key Laboratory of New Energy Materials and Devices, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China; Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, Xi'an, Shaanxi 710048, China
| | - Jingjing Wang
- Xi'an Key Laboratory of New Energy Materials and Devices, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China; Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, Xi'an, Shaanxi 710048, China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Junhua Hu
- State Center for International Cooperation on Designer Low-carbon & Environmental Materials (CDLCEM), Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Jiujun Zhang
- Xi'an Key Laboratory of New Energy Materials and Devices, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China; Institute for Sustainable Energy/College of Science, Shanghai University, Shanghai 200444, China.
| | - Xifei Li
- Xi'an Key Laboratory of New Energy Materials and Devices, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China; Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials, Xi'an, Shaanxi 710048, China.
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20
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Ba HJ, Jin M, Shi JW, Zhu AH, Ma J. Application of Trace Biological Evidence Collection Kit in DNA Examination of Trace Bloodstain Samples from the Scene. Fa Yi Xue Za Zhi 2021; 37:65-68. [PMID: 33780187 DOI: 10.12116/j.issn.1004-5619.2020.500303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Indexed: 06/12/2023]
Abstract
Objective To evaluate the effects of DNA examination of trace bloodstain samples from the scene collected with Trace Biological Evidence Collection kit. Methods Venous blood was made into bloodstains on the ground. The trace bloodstain samples were collected with Trace Biological Evidence Collection kit and common methods, respectively. DNA examination of trace bloodstain samples (50 from each group) was conducted on the constant temperature shaker for 2, 24, 48, 72, and 96 h, respectively, and the examination results of every group were compared. Results When the trace bloodstain samples were placed on the constant temperature shaker for 24, 48, 72, and 96 h, the DNA detection rates in the group which used Trace Biological Evidence Collection kit (100.00%, 100.00%, 100.00%, 96.00%) were significantly higher than those in the group using common methods (62.00%, 26.00%, 10.00%, 0), the differences had statistical significance (P<0.05). When the trace bloodstain samples were placed on the constant temperature shaker for 2 h, the differences of DNA detection rates between the two groups had no statistical significance ( P>0.05). Conclusion The Trace Biological Evidence Collection kit can effectively improve DNA detection rate and extend detection time limit for trace bloodstain samples from the scene that have been stored for a relatively long time.
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Affiliation(s)
- H J Ba
- Institute of Forensic Science of Changzhou Municipal Security Bureau, Changzhou 213003, Jiangsu Province, China
| | - M Jin
- Institute of Forensic Science of Changzhou Municipal Security Bureau, Changzhou 213003, Jiangsu Province, China
| | - J W Shi
- Institute of Forensic Science of Changzhou Municipal Security Bureau, Changzhou 213003, Jiangsu Province, China
| | - A H Zhu
- Institute of Forensic Science of Changzhou Municipal Security Bureau, Changzhou 213003, Jiangsu Province, China
| | - J Ma
- Institute of Forensic Science of Changzhou Municipal Security Bureau, Changzhou 213003, Jiangsu Province, China
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21
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Shi JW, Xu G, Li X, Wang H. [The problems and countermeasures in the training of public health talents in colleges and universities in China]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:110-113. [PMID: 33455141 DOI: 10.3760/cma.j.cn112150-20200622-00910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Colleges and universities are the cradle for public health talents training. Under the epidemic situation, the new requirements for the construction of public health service system and the promotion of population health, urged us to rethink how to reform the training of public health talents in colleges and universities. This research focused on key problems of the construction and distribution, scale, orientation, and contents of training for various public health talents in colleges and universities. It was suggested to reinforce the balanced development of public health in colleges and universities in various areas in China, to refine interdisciplinary training, to intensively cultivate technical and research-oriented talents, to expand talents within and outside the colleges and universities, as well as to introduce and cultivate public health teachers simultaneously, so as to better play the role of colleges and universities in the training of the public health talents.
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Affiliation(s)
- J W Shi
- School of Public Health, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - G Xu
- School of Public Health, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - X Li
- School of Public Health, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
| | - H Wang
- School of Public Health, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
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22
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Ma M, Yang R, He C, Jiang Z, Shi JW, Albilali R, Fayaz K, Liu B. Pd-based catalysts promoted by hierarchical porous Al 2O 3 and ZnO microsphere supports/coatings for ethyl acetate highly active and stable destruction. J Hazard Mater 2021; 401:123281. [PMID: 32629352 DOI: 10.1016/j.jhazmat.2020.123281] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/02/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
Developing economical and active materials is of great significance for VOC purification. Here, hierarchical porous Al2O3 and ZnO microspheres (Al2O3-pm and ZnO-pm) were synthesized by a facile hydrothermal strategy. The urchin-like Al2O3-pm and flower-like ZnO-pm possess high specific surface area (especially; external surface area) obviously boost the dispersion of Pd with 29.3 % and 30.1 % over Pd/Al2O3-pm and Pd/ZnO-pm, respectively, over 3.4 times higher than those of commercial Al2O3- and ZnO-supported counterparts. Pd/Al2O3-pm possesses excellent activity and CO2 yield in ethyl acetate (EA) degradation, with TOF reaches 7.76 × 10-3 s-1 at 160 °C under GHSV of 50,000 h-1. Moreover, Pd/Al2O3-pm exhibits satisfied performance in EA-contained binary VOCs oxidation and has high long-term stability under both dry and humid conditions. Both Pd sites and Brønsted acid sites participated in reaction process and initially react with EA to form ethylene and ethanol, respectively. Larger amount Brønsted acid sites over Pd/Al2O3-pm promote ethanol formation and C-C cleavage, resulting in different CO2 yields and EA activation mechanisms. The coating greatly enhances Pd dispersion over Pd supported monolithic catalyst, endowing its desired activity and stability even with a much lower Pd loading. This work promotes the potential application of noble-metal-based monolithic materials in VOC degradation.
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Affiliation(s)
- Mudi Ma
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Rui Yang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Chi He
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, PR China.
| | - Zeyu Jiang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Reem Albilali
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Khaled Fayaz
- Department of Criminal Justice and Forensic Science, King Fahd Security College, P.O. Box 2511, Riyadh 11461, Saudi Arabia
| | - Baojun Liu
- College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, PR China.
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23
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Yao M, Wang H, Qian R, Yao T, Shi JW, Cheng Y. Robust hollow TiO 2 spheres for lithium/sodium ion batteries with excellent cycling stability and rate capability. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00990g] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report a facile solvothermal synthesis of hollow TiO2 nanospheres using phenolic resin nanospheres as templates under magnetic stirring condition, followed by annealing, which demonstrate excellent lithium/sodium storage performance.
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Affiliation(s)
- Menglong Yao
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Hongkang Wang
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Ruifeng Qian
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Tianhao Yao
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Jian-Wen Shi
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Yonghong Cheng
- State Key Lab of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
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24
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Zhao S, Shi JW, Niu C, Wang B, He C, Liu W, Xiao L, Ma D, Wang H, Cheng Y. FeVO 4-supported Mn–Ce oxides for the low-temperature selective catalytic reduction of NO x by NH 3. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01424b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Iron vanadate (FeVO4) nanorods are used as a carrier to support manganese (Mn) and cerium (Ce) oxides for the selective catalytic reduction (SCR) of nitrogen oxides (NOx) with NH3 for the first time.
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Affiliation(s)
- Shuqi Zhao
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Cihang Niu
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Baorui Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Chi He
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Wei Liu
- Qiyuan (Xi'an) Dae Young Environmental Protection Technology Co., Ltd., Xi'an 710018, China
| | - Lei Xiao
- Qiyuan (Xi'an) Dae Young Environmental Protection Technology Co., Ltd., Xi'an 710018, China
| | - Dandan Ma
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hongkang Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yonghong Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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25
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Sun D, Shi JW, Ma D, Zou Y, Sun G, Mao S, Sun L, Cheng Y. CdS/ZnS/ZnO ternary heterostructure nanofibers fabricated by electrospinning for excellent photocatalytic hydrogen evolution without co-catalyst. Chinese Journal of Catalysis 2020. [DOI: 10.1016/s1872-2067(20)63576-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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26
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Niu C, Wang Y, Ren D, Xiao L, Duan R, Wang B, Wang X, Xu Y, Li Z, Shi JW. The deposition of VWOx on the CuCeOy microflower for the selective catalytic reduction of NOx with NH3 at low temperatures. J Colloid Interface Sci 2020; 561:808-817. [DOI: 10.1016/j.jcis.2019.11.063] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 11/15/2019] [Accepted: 11/15/2019] [Indexed: 10/25/2022]
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27
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Gao C, Xiao B, Shi JW, He C, Wang B, Ma D, Cheng Y, Niu C. Comprehensive understanding the promoting effect of Dy-doping on MnFeOx nanowires for the low-temperature NH3-SCR of NOx: An experimental and theoretical study. J Catal 2019. [DOI: 10.1016/j.jcat.2019.10.003] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Xie S, Wang H, Yao T, Wang J, Wang C, Shi JW, Han X, Liu T, Cheng Y. Embedding CoMoO4 nanoparticles into porous electrospun carbon nanofibers towards superior lithium storage performance. J Colloid Interface Sci 2019; 553:320-327. [DOI: 10.1016/j.jcis.2019.06.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 10/26/2022]
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29
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Wang H, Xie S, Yao T, Wang J, She Y, Shi JW, Shan G, Zhang Q, Han X, Leung MK. Casting amorphorized SnO 2/MoO 3 hybrid into foam-like carbon nanoflakes towards high-performance pseudocapacitive lithium storage. J Colloid Interface Sci 2019; 547:299-308. [PMID: 30965228 DOI: 10.1016/j.jcis.2019.03.108] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/26/2019] [Accepted: 03/31/2019] [Indexed: 12/01/2022]
Abstract
We report an amorphorization-hybridization strategy to enhance lithium storage by casting atomically mixed amorphorized SnO2/MoO3 into porous foam-like carbon nanoflakes (denote as SnO2/MoO3@CNFs, or SMC in short), which are simply prepared by annealing tin(II)/molybdenum(IV) 2-ethylhexanoate within CNFs under ambient atmosphere at a low temperature (300 °C). The SnO2/MoO3 loading amount within CNFs can be easily adjusted by controlling the Sn/Mo/C precursors. When examined as lithium ion battery (LIB) anode materials, the amorphorized SnO2/MoO3@CNFs with carbon content of 32 wt% (also denote as SMC-32, in which the number represents the carbon content) deliver a high reversible capacity of 1120.5 mA h/g after 200 cycles at 200 mA/g and then 651.5 mA h/g after another 300 cycles at 2000 mA/g, which is much better than that of the crystalline SnO2/CNFs (carbon content of 34 wt%), MoO3/CNFs (carbon content of 22.7 wt%), or SnO2/MoO3@CNFs (with lower carbon contents of 11 and 25 wt%). The electrochemical measurements as well as the ex situ structure characterization clearly suggest that combination of amorphorization and hybridization of SnO2/MoO3 with CNFs synergistically contributes to the superior lithium storage performance with high pseudocapacitive contribution.
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Affiliation(s)
- Hongkang Wang
- Center of Nanomaterials for Renewable Energy (CNRE), State Key Lab of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
| | - Sanmu Xie
- Center of Nanomaterials for Renewable Energy (CNRE), State Key Lab of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Tianhao Yao
- Center of Nanomaterials for Renewable Energy (CNRE), State Key Lab of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Jinkai Wang
- Center of Nanomaterials for Renewable Energy (CNRE), State Key Lab of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Yiyi She
- Ability R&D Energy Research Centre (AERC), School of Energy and Environment, City University of Hong Kong, Hong Kong Special Administrative Region
| | - Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy (CNRE), State Key Lab of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Guangcun Shan
- Institute of Precision Instrument and Quantum Sensing, School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, People's Republic of China
| | - Qiaobao Zhang
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, Fujian 361005, People's Republic of China.
| | - Xiaogang Han
- Center of Nanomaterials for Renewable Energy (CNRE), State Key Lab of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Micheal Kh Leung
- Ability R&D Energy Research Centre (AERC), School of Energy and Environment, City University of Hong Kong, Hong Kong Special Administrative Region.
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30
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Guo Q, Liu J, Cai J, Zhu P, Liu YL, Dong NG, Shi JW, Peng H. [Cardiac transplantation for treatment of Kawasaki disease complicated with giant coronary aneurysm]. Zhonghua Er Ke Za Zhi 2019; 57:224-226. [PMID: 30818902 DOI: 10.3760/cma.j.issn.0578-1310.2019.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Q Guo
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - J Liu
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - J Cai
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - P Zhu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y L Liu
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - N G Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - J W Shi
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - H Peng
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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31
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Fan Z, Wang Z, Shi JW, Gao C, Gao G, Wang B, Wang Y, Chen X, He C, Niu C. Charge-redistribution-induced new active sites on (0 0 1) facets of α-Mn2O3 for significantly enhanced selective catalytic reduction of NO by NH3. J Catal 2019. [DOI: 10.1016/j.jcat.2018.12.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Shi JW, Wang Y, Duan R, Gao C, Wang B, He C, Niu C. The synergistic effects between Ce and Cu in CuyCe1−yW5Ox catalysts for enhanced NH3-SCR of NOx and SO2 tolerance. Catal Sci Technol 2019. [DOI: 10.1039/c8cy01949e] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Non-manganese-based metal oxides are promising catalysts for the NH3-SCR (selective catalytic reduction) of NOx at low temperatures.
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Affiliation(s)
- Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment
- Center of Nanomaterials for Renewable Energy
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Yao Wang
- State Key Laboratory of Electrical Insulation and Power Equipment
- Center of Nanomaterials for Renewable Energy
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Ruibin Duan
- Guangdong Provincial Academy of Building Research Group Co., Ltd
- Guangzhou 510530
- China
| | - Chen Gao
- State Key Laboratory of Electrical Insulation and Power Equipment
- Center of Nanomaterials for Renewable Energy
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Baorui Wang
- State Key Laboratory of Electrical Insulation and Power Equipment
- Center of Nanomaterials for Renewable Energy
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Chi He
- Department of Environmental Science and Engineering
- School of Energy and Power Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Chunming Niu
- State Key Laboratory of Electrical Insulation and Power Equipment
- Center of Nanomaterials for Renewable Energy
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
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33
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Shi JW, Fan Z, Gao C, Gao G, Wang B, Wang Y, He C, Niu C. Cover Feature: Mn−Co Mixed Oxide Nanosheets Vertically Anchored on H 2
Ti 3
O 7
Nanowires: Full Exposure of Active Components Results in Significantly Enhanced Catalytic Performance (ChemCatChem 13/2018). ChemCatChem 2018. [DOI: 10.1002/cctc.201800996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Zhaoyang Fan
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Chen Gao
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Ge Gao
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Baorui Wang
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Yao Wang
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Chi He
- Department of Environmental Science and Engineering; School of Energy and Power Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Chunming Niu
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
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Shi JW, Zou Y, Ma D, Fan Z, Cheng L, Sun D, Wang Z, Niu C, Wang L. Stable 1T-phase MoS 2 as an effective electron mediator promoting photocatalytic hydrogen production. Nanoscale 2018; 10:9292-9303. [PMID: 29737351 DOI: 10.1039/c8nr00017d] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Coupling two semiconductors together to construct a Z-scheme type photocatalytic system is an efficient strategy to solve the serious recombination challenge of photogenerated electrons and holes. In this work, we develop a novel composite photocatalyst by sandwiching metallic 1T-phase MoS2 nanosheets between MoO3 and g-C3N4 (MoO3/1T-MoS2/g-C3N4) for the first time. The metallic 1T-phase MoS2 acts as an efficient electron mediator between MoO3 and g-C3N4 to construct an all-solid-state Z-scheme photocatalytic system, resulting in a highly-efficient spatial charge separation and transfer process. Benefiting from this, the newly developed MoO3/1T-MoS2/g-C3N4 exhibits a drastically enhanced photocatalytic H2 evolution rate of 513.0 μmol h-1 g-1 under visible light irradiation (>420 nm), which is nearly 12 times higher than that of the pure g-C3N4 (39.5 μmol h-1 g-1), and 3.5 times higher than that of MoO3/g-C3N4 (145.7 μmol h-1 g-1). More importantly, the originally unstable 1T-phase MoS2 becomes very stable in MoO3/1T-MoS2/g-C3N4 because of the sandwich structure where 1T-phase MoS2 is protected by MoO3 and g-C3N4, which endows the photocatalyst with excellent photostability. It is believed that this study will provide new insights into the design of efficient and stable Z-scheme heterostructures for photocatalytic applications.
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Affiliation(s)
- Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
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35
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Shi JW, Fan Z, Gao C, Gao G, Wang B, Wang Y, He C, Niu C. Mn−Co Mixed Oxide Nanosheets Vertically Anchored on H2
Ti3
O7
Nanowires: Full Exposure of Active Components Results in Significantly Enhanced Catalytic Performance. ChemCatChem 2018. [DOI: 10.1002/cctc.201800227] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Zhaoyang Fan
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Chen Gao
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Ge Gao
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Baorui Wang
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Yao Wang
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Chi He
- Department of Environmental Science and Engineering; School of Energy and Power Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Chunming Niu
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P.R. China
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36
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Ma D, Shi JW, Zou Y, Fan Z, Shi J, Cheng L, Sun D, Wang Z, Niu C. Multiple carrier-transfer pathways in a flower-like In 2S 3/CdIn 2S 4/In 2O 3 ternary heterostructure for enhanced photocatalytic hydrogen production. Nanoscale 2018; 10:7860-7870. [PMID: 29664490 DOI: 10.1039/c8nr00170g] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A novel flower-like In2S3/CdIn2S4/In2O3 (ICS) ternary heterostructure (HS) is rationally constructed for the first time by a series of carefully designed procedures. In2O3 nanoflakes are the main constituent units which assemble into a flower-like skeleton structure, and CdIn2S4 nanoparticles are in situ generated on the surface of In2O3 nanoflakes through the transformation of CdS quantum dots (QDs) while In2S3 nanoparticles are in situ produced at the region between CdIn2S4 nanoparticles and In2O3 nanoflakes resulting from a synchronous sulfuration procedure. As expected, the rationally designed ICS ternary HSs display significantly enhanced photocatalytic H2 production, especially ICS5 (sulfurized for 5 h) with the highest H2 evolution rate of 20.04 μmol h-1 (10 mg catalyst is used for photocatalytic reaction), which is 26.7 times and 2.6 times higher than that of pure In2O3 (0.75 μmol h-1) and In2S3/In2O3 binary HS (7.88 μmol h-1), respectively. The enhanced photocatalytic activity can be attributed to the multiple interfaces formed in the ICS HSs, including the CdIn2S4-In2O3 interface, the In2S3-In2O3 interface, and the CdIn2S4-In2O3-In2S3 interface, which construct multiple pathways for the transfer of photogenerated charge carriers, effectively promoting the photocatalytic hydrogen production.
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Affiliation(s)
- Dandan Ma
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
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37
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Zou Y, Shi JW, Ma D, Fan Z, Cheng L, Sun D, Wang Z, Niu C. WS 2 /Graphitic Carbon Nitride Heterojunction Nanosheets Decorated with CdS Quantum Dots for Photocatalytic Hydrogen Production. ChemSusChem 2018; 11:1187-1197. [PMID: 29400001 DOI: 10.1002/cssc.201800053] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 01/31/2018] [Indexed: 06/07/2023]
Abstract
Two-dimensional/two-dimensional (2D/2D) stacking heterostructures are highly desirable in fabricating efficient photocatalysts because face-to-face contact can provide a maximized interfacial region between the two semiconductors; this largely facilitates the migration of charge carriers. Herein, a WS2 /graphitic carbon nitride (CN) 2D/2D nanosheet heterostructure decorated with CdS quantum dots (QDs) has been designed, for the first time. Optimized CdS/WS2 /CN without another cocatalyst exhibits a significantly enhanced photocatalytic H2 evolution rate of 1174.5 μmol h-1 g-1 under visible-light irradiation (λ>420 nm), which is nearly 67 times higher than that of the pure CN nanosheets. The improved photocatalytic activity can be primarily attributed to the highly efficient charge-transfer pathways built among the three components, which effectively accelerate the separation and transfer of photogenerated electrons and holes, and thus, inhibit their recombination. Moreover, the extended light-absorption range also contributes to excellent photocatalytic efficiency. In addition, the CdS/WS2 /CN photocatalyst shows excellent stability and reusability without apparent decay in the photocatalytic H2 evolution within 4 cycles in 20 h. It is believed that this work may shed light on specifically designed 2D/2D nanosheet heterostructures for more efficient visible-light-driven photocatalysts.
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Affiliation(s)
- Yajun Zou
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China
| | - Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, PR China
| | - Dandan Ma
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China
| | - Zhaoyang Fan
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China
| | - Linhao Cheng
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China
| | - Diankun Sun
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China
| | - Zeyan Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, PR China
| | - Chunming Niu
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, PR China
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38
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He C, Jiang Z, Ma M, Zhang X, Douthwaite M, Shi JW, Hao Z. Understanding the Promotional Effect of Mn2O3 on Micro-/Mesoporous Hybrid Silica Nanocubic-Supported Pt Catalysts for the Low-Temperature Destruction of Methyl Ethyl Ketone: An Experimental and Theoretical Study. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04461] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chi He
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Zeyu Jiang
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
| | - Mudi Ma
- Department of Environmental Science and Engineering, State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
| | - Xiaodong Zhang
- Department of Environmental Science and Engineering, School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, People’s Republic of China
| | - Mark Douthwaite
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, U.K
| | - Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
| | - Zhengping Hao
- National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, People’s Republic of China
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Jin M, Ba HJ, Zhu AH, Ma J, Shi JW, Liu YN, Lin ZQ. [Effect of Benzidine Test on DNA Analysis of Bloodstain]. Fa Yi Xue Za Zhi 2018; 34:157-160. [PMID: 29923382 DOI: 10.3969/j.issn.1004-5619.2018.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Indexed: 06/08/2023]
Abstract
OBJECTIVES To explore the effect of benzidine test and related reagents on DNA analysis of bloodstain. METHODS A total of 970 bloodstain filter paper samples with 1 μL venous blood were collected, and 10 of them acted as control samples. After benzidine test and related reagent processing, DNA of 960 samples was extracted by Chelex-100 and silica bead methods and then multiplex amplified by AmpFℓSTR™ Identifiler™ Plus PCR kits. The results of STR typing were compared between different groups. RESULTS DNA were extracted immediately after benzidine test. Totally STR loci (3.80±1.34) were detected by silica bead method, while no STR loci were obtained by Chelex-100 method. Thirteen samples (21.7%) with whole STR typing results were obtained by drying after benzidine test, and the STR locus number (12.90±1.49) which obtained by silica bead method was much higher than by Chelex-100 method (4.70±1.96) (P<0.05). When DNA was extracted immediately after the addition of glacial acetic acid, the STR locus number was (9.40±2.09) by silica bead method, but no STR typing result was obtained by Chelex-100 method. All 15 STR loci could be obtained by only adding glacial acetic acid after drying and only adding tetramethylbenzidine alcoholization liquid or 3% hydrogen peroxide liquid. CONCLUSIONS Benzidine test has significant influence on DNA analysis of bloodstain. The Chelex-100 method is not suitable for the DNA extraction of bloodstain after benzidine test. Drying after benzidine test and silica bead methods can effectively enhance the STR locus number of bloodstain.
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Affiliation(s)
- M Jin
- Institute of Forensic Science, Changzhou Public Security Bureau, Changzhou 213003, China
| | - H J Ba
- Institute of Forensic Science, Changzhou Public Security Bureau, Changzhou 213003, China
| | - A H Zhu
- Institute of Forensic Science, Changzhou Public Security Bureau, Changzhou 213003, China
| | - J Ma
- Institute of Forensic Science, Changzhou Public Security Bureau, Changzhou 213003, China
| | - J W Shi
- Institute of Forensic Science, Changzhou Public Security Bureau, Changzhou 213003, China
| | - Y N Liu
- Shanghai Key Laboratory of Crime Scene Evidence, Key Laboratory of Forensic Evidence and Science Technology, Ministry of Public Security, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai 200083, China
| | - Z Q Lin
- Department of Forensic Medicine, China Criminal Police College, Shenyang 110035, China
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Xie S, Cao D, She Y, Wang H, Shi JW, Leung MKH, Niu C. Atomic layer deposition of TiO2 shells on MoO3 nanobelts allowing enhanced lithium storage performance. Chem Commun (Camb) 2018; 54:7782-7785. [DOI: 10.1039/c8cc04282a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Atomic layer deposition of TiO2 shells on MoO3 nanobelts greatly improved the lithium storage performance.
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Affiliation(s)
- Sanmu Xie
- Center of Nanomaterials for Renewable Energy (CNRE)
- State Key Lab of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Daxian Cao
- Center of Nanomaterials for Renewable Energy (CNRE)
- State Key Lab of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Yiyi She
- Ability R&D Energy Research Centre (AERC)
- School of Energy and Environment
- City University of Hong Kong
- Hong Kong SAR
| | - Hongkang Wang
- Center of Nanomaterials for Renewable Energy (CNRE)
- State Key Lab of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy (CNRE)
- State Key Lab of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Micheal K H Leung
- Ability R&D Energy Research Centre (AERC)
- School of Energy and Environment
- City University of Hong Kong
- Hong Kong SAR
| | - Chunming Niu
- Center of Nanomaterials for Renewable Energy (CNRE)
- State Key Lab of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
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Zou Y, Gao G, Wang Z, Shi JW, Wang H, Ma D, Fan Z, Chen X, Wang Z, Niu C. Formation mechanism of rectangular-ambulatory-plane TiO2 plates: an insight into the role of hydrofluoric acid. Chem Commun (Camb) 2018; 54:7191-7194. [DOI: 10.1039/c8cc02309c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel rectangular-ambulatory-plane TiO2 plate with exposed {001} facets was developed for the first time, and its formation mechanism was well revealed.
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Zou Y, Shi JW, Ma D, Fan Z, He C, Cheng L, Sun D, Li J, Wang Z, Niu C. Efficient spatial charge separation and transfer in ultrathin g-C3N4 nanosheets modified with Cu2MoS4 as a noble metal-free co-catalyst for superior visible light-driven photocatalytic water splitting. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00898a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu2MoS4 was employed as a promising non-noble metal co-catalyst to couple with g-C3N4 for highly efficient water splitting.
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Zou Y, Shi JW, Ma D, Fan Z, Niu C, Wang L. Fabrication of g-C3
N4
/Au/C-TiO2
Hollow Structures as Visible-Light-Driven Z-Scheme Photocatalysts with Enhanced Photocatalytic H2
Evolution. ChemCatChem 2017. [DOI: 10.1002/cctc.201700542] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yajun Zou
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P. R. China
| | - Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P. R. China
| | - Dandan Ma
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P. R. China
| | - Zhaoyang Fan
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P. R. China
| | - Chunming Niu
- Center of Nanomaterials for Renewable Energy; State Key Laboratory of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 P. R. China
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and AIBN; The University of Queensland; St. Lucia Brisbane QLD 4072 Australia
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Ma D, Shi JW, Zou Y, Fan Z, Ji X, Niu C. Highly Efficient Photocatalyst Based on a CdS Quantum Dots/ZnO Nanosheets 0D/2D Heterojunction for Hydrogen Evolution from Water Splitting. ACS Appl Mater Interfaces 2017; 9:25377-25386. [PMID: 28696670 DOI: 10.1021/acsami.7b08407] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel CdS/ZnO heterojunction constructed of zero-dimensional (0D) CdS quantum dots (QDs) and two-dimensional (2D) ZnO nanosheets (NSs) was rationally designed for the first time. The 2D ZnO NSs were assembled into ZnO microflowers (MFs) via an ultrasonic-assisted hydrothermal procedure (100 °C, 12 h) in the presence of a NaOH solution (0.06 M), and CdS QDs were deposited on both sides of every ZnO NS in situ by using the successive ionic-layer absorption and reaction method. It was found that the ultrasonic treatment played an important role in the generation of ZnO NSs, while NaOH was responsible to the assembly of a flower-like structure. The obtained CdS/ZnO 0D/2D heterostructures exhibited remarkably enhanced photocatalytic activity for hydrogen evolution from water splitting in comparison with other CdS/ZnO heterostructures with different dimensional combinations such as 2D/2D, 0D/three-dimensional (3D), and 3D/0D. Among them, CdS/ZnO-12 (12 deposition cycles of CdS QDs) exhibited the highest hydrogen evolution rate of 22.12 mmol/g/h, which was 13 and 138 times higher than those of single CdS (1.68 mmol/g/h) and ZnO (0.16 mmol/g/h), respectively. The enhanced photocatalytic activity can be attributed to several positive factors, such as the formation of a Z-scheme photocatalytic system, the tiny size effect of 0D CdS QDs and 2D ZnO NSs, and the intimate contact between CdS QDs and ZnO NSs. The formation of a Z-scheme photocatalytic system remarkably promoted the separation and migration of photogenerated electron-hole pairs. The tiny size effect effectively decreased the recombination probability of electrons and holes. The intimate contact between the two semiconductors efficiently reduced the migration resistance of photogenerated carriers. Furthermore, CdS/ZnO-12 also presented excellent stability for photocatalytic hydrogen evolution without any decay within five cycles in 25 h.
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Affiliation(s)
- Dandan Ma
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Yajun Zou
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Zhaoyang Fan
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Xin Ji
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Chunming Niu
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
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Fan Z, Shi JW, Gao C, Gao G, Wang B, Niu C. Rationally Designed Porous MnO x-FeO x Nanoneedles for Low-Temperature Selective Catalytic Reduction of NO x by NH 3. ACS Appl Mater Interfaces 2017; 9:16117-16127. [PMID: 28467037 DOI: 10.1021/acsami.7b00739] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, a novel porous nanoneedlelike MnOx-FeOx catalyst (MnOx-FeOx nanoneedles) was developed for the first time by rationally heat-treating metal-organic frameworks including MnFe precursor synthesized by hydrothermal method. A counterpart catalyst (MnOx-FeOx nanoparticles) without porous nanoneedle structure was also prepared by a similar procedure for comparison. The two catalysts were systematically characterized by scanning and transmission electron microscopy, X-ray diffraction, thermogravimetric analysis, X-ray photoelectron spectroscopy, hydrogen temperature-programmed reduction, ammonia temperature-programmed desorption, and in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFT), and their catalytic activities were evaluated by selective catalytic reduction (SCR) of NOx by NH3. The results showed that the rationally designed MnOx-FeOx nanoneedles presented outstanding low-temperature NH3-SCR activity (100% NOx conversion in a wide temperature window from 120 to 240 °C), high selectivity for N2 (nearly 100% N2 selectivity from 60 to 240 °C), and excellent water resistance and stability in comparison with the counterpart MnOx-FeOx nanoparticles. The reasons can be attributed not only to the unique porous nanoneedle structure but also to the uniform distribution of MnOx and FeOx. More importantly, the desired Mn4+/Mnn+ and Oα/(Oα + Oβ) ratios, as well as rich redox sites and abundant strong acid sites on the surface of the porous MnOx-FeOx nanoneedles, also contribute to these excellent performances. In situ DRIFT suggested that the NH3-SCR of NO over MnOx-FeOx nanoneedles follows both Eley-Rideal and Langmuir-Hinshelwood mechanisms.
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Affiliation(s)
- Zhaoyang Fan
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Chen Gao
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Ge Gao
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Baorui Wang
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
| | - Chunming Niu
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University , Xi'an 710049, China
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Chen JW, Shi JW, Fu ML. Nitrogen-doped anatase titania nanorods with reactive {101} + {010} facets exposure produced from ultrathin titania nanosheets for high photocatalytic performance. CATAL COMMUN 2016. [DOI: 10.1016/j.catcom.2016.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Shi JW, Xie C, He C, Liu C, Gao C, Yang S, Chen JW, Li G. Photocatalytic performance comparison of titania hollow spheres composed of nanoplates with dominant {001} facets and nanoparticles without dominant {001} facets. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.03.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Shi JW, Wang Z, He C, Wang H, Chen JW, Fu ML, Li G, Niu C. CdS quantum dots modified N-doped titania plates for the photocatalytic mineralization of diclofenac in water under visible light irradiation. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.01.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Shi JW, Liu C, He C, Li J, Xie C, Yang S, Chen JW, Li S, Niu C. Carbon-doped titania nanoplates with exposed {001} facets: facile synthesis, characterization and visible-light photocatalytic performance. RSC Adv 2015. [DOI: 10.1039/c4ra15824e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
C-doped TiO2 nanoplates (CTNP) with exposed {001} facets were synthesized for the first time. The obtained CTNP presented high visible-light photocatalytic activity. A reasonable mechanism of photocatalysis on CTNP under visible light was proposed.
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Affiliation(s)
- Jian-Wen Shi
- Center of Nanomaterials for Renewable Energy
- State Key Laboratory of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Chang Liu
- Center of Nanomaterials for Renewable Energy
- State Key Laboratory of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Chi He
- Department of Environmental Science and Engineering
- School of Energy and Power Engineering
- Xi'an Jiaotong University
- Xi'an 710049
- China
| | - Jun Li
- Center of Nanomaterials for Renewable Energy
- State Key Laboratory of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Chong Xie
- Center of Nanomaterials for Renewable Energy
- State Key Laboratory of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Shenghui Yang
- Center of Nanomaterials for Renewable Energy
- State Key Laboratory of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
| | - Jian-Wei Chen
- Institute of Urban Environment
- Chinese Academy of Sciences
- Xiamen
- China
| | - Shi Li
- Department of Environmental Science and Engineering
- China University of Petroleum
- Qingdao 266580
- China
| | - Chunming Niu
- Center of Nanomaterials for Renewable Energy
- State Key Laboratory of Electrical Insulation and Power Equipment
- School of Electrical Engineering
- Xi'an Jiaotong University
- Xi'an 710049
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