1
|
Onur E, Lee J, Aymerich-Armengol R, Lim J, Dai Y, Tüysüz H, Scheu C, Weidenthaler C. Exploring the Effects of the Photochromic Response and Crystallization on the Local Structure of Noncrystalline Niobium Oxide. ACS APPLIED MATERIALS & INTERFACES 2024; 16:25136-25147. [PMID: 38687307 PMCID: PMC11103654 DOI: 10.1021/acsami.4c04038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/19/2024] [Accepted: 04/24/2024] [Indexed: 05/02/2024]
Abstract
Niobium oxide (Nb2O5) is a versatile semiconductor material with photochromic properties. This study investigates the local structure of noncrystalline, short-range-ordered niobium oxide synthesized via a sol-gel method. X-ray atomic pair distribution function analysis unravels the structural arrangements within the noncrystalline materials at a local scale. In the following, in situ scattering and diffraction experiments elucidate the heat-induced structure transformation of the amorphous material into crystalline TT-Nb2O5 at 550 °C. In addition, the effect of photocatalytic conditions on the structure of the material was investigated by exposing the short-range-ordered and crystalline materials to ultraviolet light, resulting in a reversible color change from white to dark brown or blue. This photochromic response is due to the reversible elongation of the nearest Nb-O neighbors, as shown by local structure analysis based on in situ PDF analyses. Optical band gap calculations based on the ultraviolet-visible spectra collected for both the short-range-ordered and crystalline materials show that the band gap values reduced for the darkened materials return to their initial state after bleaching. Furthermore, electron energy loss spectroscopy reveals the reduction of Nb5+ to Nb4+ centers as a persistent effect. The study establishes a correlation between the band gap and the structure of niobium oxide, providing insights into the structure-performance relation at the atomic level.
Collapse
Affiliation(s)
- Ezgi Onur
- Max-Planck-Institut
für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Jinsun Lee
- Max-Planck-Institut
für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | | | - Joohyun Lim
- Max-Planck-Institut
für Eisenforschung, Max-Planck-Straße 1, 40237 Düsseldorf, Germany
| | - Yitao Dai
- Max-Planck-Institut
für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Harun Tüysüz
- Max-Planck-Institut
für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Christina Scheu
- Max-Planck-Institut
für Eisenforschung, Max-Planck-Straße 1, 40237 Düsseldorf, Germany
| | - Claudia Weidenthaler
- Max-Planck-Institut
für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| |
Collapse
|
2
|
Li P, Zhang Z, Xu Z, Sun H, Zhang Q, Hao X. Photomodulated cryogenic temperature sensing through a photochromic reaction in Na 0.5Bi 2.5Ta 2O 9: Er/Yb multicolour upconversion. OPTICS EXPRESS 2023; 31:7047-7059. [PMID: 36859844 DOI: 10.1364/oe.469538] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 08/25/2022] [Indexed: 06/18/2023]
Abstract
Optical temperature sensing of the non-thermally coupled energy levels (N-TCLs) based on fluorescence intensity ratio (FIR) technologies has excellent temperature sensitivity and signal recognition properties. In this study, a novel strategy is established to enhance the low-temperature sensing properties by controlling photochromic reaction process in Na0.5Bi2.5Ta2O9: Er/Yb samples. The maximum relative sensitivity reaches up to 5.99% K-1 at cryogenic temperature of 153 K. After irradiation with commercial laser of 405 nm for 30 s, the relative sensitivity is increased to 6.81% K-1. The improvement is verified to originate from the coupling of optical thermometric and photochromic behaviour at the elevated temperatures. The strategy may open up a new avenue to improve the thermometric sensitivity in photo-stimuli response photochromic materials.
Collapse
|
3
|
Wang L, Hu L, He J, Da L. Band gap structure - Lewis acid/base feature correlation for potassium/sodium polyniobates and polytitanates. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.123855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
4
|
Shi Z, Li J, Jiang J, Wang Y, Wang X, Li Y, Yang L, Chu Y, Bai J, Yang J, Ni J, Wang Y, Zhang L, Jiang Z, Liu C, Ge J, Xing W. Enhanced Acidic Water Oxidation by Dynamic Migration of Oxygen Species at the Ir/Nb 2 O 5-x Catalyst/Support Interfaces. Angew Chem Int Ed Engl 2022; 61:e202212341. [PMID: 36254795 DOI: 10.1002/anie.202212341] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Indexed: 11/05/2022]
Abstract
Catalyst/support interaction plays a vital role in catalysis towards acidic oxygen evolution (OER), and the performance reinforcement is currently interpreted by either strain or electron donation effect. We herein report that these views are insufficient, where the dynamic evolution of the interface under potential bias must be considered. Taking Nb2 O5-x supported iridium (Ir/Nb2 O5-x ) as a model catalyst, we uncovered the dynamic migration of oxygen species between IrOx and Nb2 O5-x during OER. Direct spectroscopic evidence combined with theoretical computation suggests these migrations not only regulate the in situ Ir structure towards boosted activity, but also suppress its over-oxidation via spontaneously delivering excessive oxygen from IrOx to Nb2 O5-x . The optimized Ir/Nb2 O5-x thus demonstrated exceptional performance in scalable water electrolyzers, i.e., only need 1.839 V to attain 3 A cm-2 (surpassing the DOE 2025 target), and no activity decay during a 2000 h test at 2 A cm-2 .
Collapse
Affiliation(s)
- Zhaoping Shi
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Ji Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jiadong Jiang
- Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun, 130012, P. R. China
| | - Yibo Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xian Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yang Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Liting Yang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yuyi Chu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jingsen Bai
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jiahao Yang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jing Ni
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Ying Wang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Lijuan Zhang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, P. R. China.,Shanghai Synchrotron Radiation Facility, Zhangjiang National Lab, Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201204, China
| | - Zheng Jiang
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,Shanghai Synchrotron Radiation Facility, Zhangjiang National Lab, Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201204, China
| | - Changpeng Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Junjie Ge
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Wei Xing
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| |
Collapse
|
5
|
Liu C, Feng Y, Han Z, Sun Y, Wang X, Zhang Q, Zou Z. Z-scheme N-doped K4Nb6O17/g-C3N4 heterojunction with superior visible-light-driven photocatalytic activity for organic pollutant removal and hydrogen production. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63608-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
6
|
Zhou C, Shi R, Waterhouse GI, Zhang T. Recent advances in niobium-based semiconductors for solar hydrogen production. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213399] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
7
|
Su K, Liu H, Zeng B, Zhang Z, Luo N, Huang Z, Gao Z, Wang F. Visible-Light-Driven Selective Oxidation of Toluene into Benzaldehyde over Nitrogen-Modified Nb2O5 Nanomeshes. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04215] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Kaiyi Su
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huifang Liu
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023, China
| | - Bin Zeng
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhixin Zhang
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023, China
| | - Nengchao Luo
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhipeng Huang
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhuyan Gao
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feng Wang
- State Key Laboratory of Catalysis (SKLC), Dalian National Laboratory for Clean Energy (DNL), Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian 116023, China
| |
Collapse
|
8
|
Xue S, Deng H, Xie Q, Hu Y, Yan J, Zhao X, Wang F, Zhang Q, Luo L, Deng C, He C, Lin D, Li S, Wang X, Luo H. Giant tunability of upconversion photoluminescence in Er 3+-doped (K, Na)NbO 3 single crystals. NANOSCALE 2019; 11:16928-16934. [PMID: 31490526 DOI: 10.1039/c9nr05817f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Perovskite oxides with luminescent ions hold great promise in optoelectronic devices because of their outstanding thermal stabilities and electro-optic performance. As one typical perovskite upconversion (UC) host material, lead-free potassium sodium niobate ((K, Na)NbO3/(KxNa1-x)NbO3 or KNN) has attracted much attention in recent years. In the present work, a novel routine was developed to tune the upconversion photoluminescence (UC PL) performance by controlling the oxygen vacancy concentration in the KNN matrix, based on the 0.1% Er3+-doped KNN (Er-KNN) single crystals grown for the first time. UC PL properties, conductivity and defect chemistry of the single crystals were systematically investigated. The UC PL intensity of the as-grown Er-KNN material could be enhanced by 20 times after oxygen atmosphere annealing at 800 °C and fully quenched after vacuum annealing. What's more, by annealing under an oxygen atmosphere and vacuum, the conductivity of the Er-KNN sample was successfully tuned for more than 8 orders of magnitude. The super-wide range tunability of UC PL performance and conductivity could be explained by oxygen vacancies which gave rise to Nb5+-Nb4+ valence alternation. Because of the modulated photoluminescence properties and conductivity, our grown Er-KNN single crystals have great potential for use in multifunctional devices.
Collapse
Affiliation(s)
- Saidong Xue
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, P. R. China.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Jiang D, Wen B, Zhang Y, Jin Y, Li D, Chen M. MoS2/SnNb2O6 2D/2D nanosheet heterojunctions with enhanced interfacial charge separation for boosting photocatalytic hydrogen evolution. J Colloid Interface Sci 2019; 536:1-8. [DOI: 10.1016/j.jcis.2018.10.027] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 10/11/2018] [Accepted: 10/11/2018] [Indexed: 01/20/2023]
|
10
|
Wu W, Xuan Y, Jin Y, Liang X, Meng S, Chen M. Construction of Novel CdS/SnNb
2
O
6
Heterojunctions with Enhanced Photocatalytic Degradation Activity Under Visible Light. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800493] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wen Wu
- Department of Chemistry Zhoukou Normal University 466001 Zhoukou China
- The Key Laboratory of Rare Earth Functional Materials and Applications Zhoukou Normal University 466001 Zhoukou China
| | - Yawen Xuan
- Department of Chemistry Zhoukou Normal University 466001 Zhoukou China
- The Key Laboratory of Rare Earth Functional Materials and Applications Zhoukou Normal University 466001 Zhoukou China
| | - Yu Jin
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Ximeng Liang
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Suci Meng
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| | - Min Chen
- School of Chemistry and Chemical Engineering Jiangsu University 212013 Zhenjiang China
| |
Collapse
|
11
|
Chen L, Zhang C, Wu L, Lv K, Deng K, Wu T. A Facile One-Pot Synthesis of Biomimetic Photocatalyst Zn(II)-Porphyrin-Sensitized 3D TiO 2 Hollow Nanoboxes and Synergistically Enhanced Visible-Light Degradation. NANOSCALE RESEARCH LETTERS 2018; 13:336. [PMID: 30357548 PMCID: PMC6200830 DOI: 10.1186/s11671-018-2745-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 10/07/2018] [Indexed: 06/08/2023]
Abstract
A serials of biomimetic photocatalyst zinc(II) meso-tetra(4-carboxyphenyl)porphyrinato (ZnTCP)-sensitized 3D hierarchical TiO2 hollow nanoboxes (TiO2-HNBs) assembled by six ordered nanosheets with dominant {001} facets exposure (ZnTCP@TiO2-HNBs) have been successfully synthesized by a facile one-pot solvothermal method via a topological transformation process with TiOF2 as template. Infrared spectra (IR), UV-vis spectroscopy, and X-ray photoelectron spectroscopy (XPS) confirmed that ZnTCP played a decisive role in constructing 3D hollow nanoboxes through the formation of ester bond combined to TiO2-HNBs, which also provided a transferring photo excited electrons bridge to sensitize TiO2-HNBs for enhancing visible-light response. Due to the superior sensitization and biomimetic activity of ZnTCP, the photodegradation rate of rhodamine B (RhB) of as-prepared ZnTCP@TiO2-HNBs with ZnTCP/TiOF2 mass ratio of 2% (T-2p) improves 3.6 times compared to that of TiO2-HNBs with a degradation yield of 99% for 2 h under simulated sunlight irradiation (> 420 nm). The enhanced photodegradation ability was attributed to synergistic visible photocatalytic mechanism of biomimetic catalyst, which can not only produce hydroxyl radical (•OH) and superoxide radical (•O2-) coming from the excitation process of ZnTCP sensitized TiO2-HNBs, but also generate singlet oxygen (1O2) that was only provided by biomimetic enzyme porphyrins. Furthermore, the photocatalyst showed good recycling stability and dispersibility after five rounds, ascribed to ZnTCP strong chemical bonding to the support TiO2-HNBs. By means of electrochemical cyclic voltammetry analysis, the effect of central zinc ions and parent porphyrin rings on the redox property of biomimetic catalyst was studied.
Collapse
Affiliation(s)
- Lianqing Chen
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan, 430074 People’s Republic of China
| | - Chengjiang Zhang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan, 430074 People’s Republic of China
| | - Lamei Wu
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan, 430074 People’s Republic of China
| | - Kangle Lv
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan, 430074 People’s Republic of China
| | - Kejian Deng
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan, 430074 People’s Republic of China
| | - Tsunghsueh Wu
- Department of Chemistry, University of Wisconsin-Platteville, Platteville, WI 53818 USA
| |
Collapse
|
12
|
One-pot topotactic synthesis of Ti 3+ self-doped 3D TiO 2 hollow nanoboxes with enhanced visible light response. CHINESE JOURNAL OF CATALYSIS 2018. [DOI: 10.1016/s1872-2067(18)63106-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
13
|
Chassé M, Hallett-Tapley GL. Gold nanoparticle-functionalized niobium oxide perovskites as photocatalysts for visible light-induced aromatic alcohol oxidations. CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0673] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Spherical gold nanoparticles have been supported onto the surface of potassium niobium oxide perovskites, an underdeveloped class of semiconductor in photocatalytic organic transformations. The nanoparticle dopants of 9.5 nm in diameter and surface plasmon absorption at 530 nm are examined as possible visible light induced catalysts using alcohol photooxidation as the probe reaction. The nanomaterial-induced photooxidation of a series of aromatic alcohols is examined, in the absence of solvent, as a function of base, H2O2, and catalyst concentrations, as well as using multiple visible light sources. This experimental methodology affords extremely selective photooxidation to the carbonyl products (>99%) in as little as 2 h. Using the results obtained from the substitution of the aromatic alcohol, the proposed photocatalytic mechanism is suggested to rely heavily on plasmon-initiated electron transfer from the gold nanoparticle surface to the potassium niobium oxide perovskite and subsequent reductive decomposition of H2O2. This photodegradation step is proposed to favor the formation of ketyl radical species, a key intermediate in the visible light induced mechanism that undergoes both an electron and proton transfer to facilitate formation of the final, carbonyl products. Furthermore, the gold nanoparticle – potassium niobium oxide catalyst exhibits moderate reusability, highly desired in the realm of heterogeneous catalysis.
Collapse
Affiliation(s)
- Melissa Chassé
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
- Department of Chemistry, St. Francis Xavier University, P.O. Box 5000, Antigonish, NS B2G 2W5, Canada
| | - Geniece L. Hallett-Tapley
- Department of Chemistry, St. Francis Xavier University, P.O. Box 5000, Antigonish, NS B2G 2W5, Canada
| |
Collapse
|
14
|
Dong G, Wang X, Chen Z, Lu Z. Enhanced Photocatalytic Activity of Vacuum-activated TiO2
Induced by Oxygen Vacancies. Photochem Photobiol 2018; 94:472-483. [DOI: 10.1111/php.12874] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 11/24/2017] [Indexed: 01/16/2023]
Affiliation(s)
- Guoyan Dong
- College of Materials Science and Engineering; South China University of Technology; Guangzhou China
| | - Xin Wang
- College of Materials Science and Engineering; South China University of Technology; Guangzhou China
| | - Zhiwu Chen
- College of Materials Science and Engineering; South China University of Technology; Guangzhou China
- State Key Laboratory of Pulp and Paper Engineering; South China University of Technology; Guangzhou China
| | - Zhenya Lu
- College of Materials Science and Engineering; South China University of Technology; Guangzhou China
| |
Collapse
|
15
|
Zhou C, Shi R, Shang L, Wu LZ, Tung CH, Zhang T. Two-step hydrothermal synthesis of Sn2Nb2O7 nanocrystals with enhanced visible-light-driven H2 evolution activity. CHINESE JOURNAL OF CATALYSIS 2018. [DOI: 10.1016/s1872-2067(17)62963-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
16
|
Engineering highly effective and stable nanocomposite photocatalyst based on NH2-MIL-125 encirclement with Ag3PO4 nanoparticles. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.10.011] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
17
|
Ma X, Chen Y, Lee J, Yang C, Cui X. In situ formation of NbOx@NbN microcomposites: seeking potential in photocatalytic and Li-ion battery applications. NEW J CHEM 2018. [DOI: 10.1039/c7nj03631k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A NbOx@NbN microcomposite formed by in situ partial thermal oxidation is revealed to be potentially advantageous in photocatalytic hydrogen production and lithium-ion storage.
Collapse
Affiliation(s)
- Xiaoqing Ma
- Department of Materials Science
- Fudan University
- Shanghai 200433
- China
| | - Yang Chen
- Department of Materials Science
- Fudan University
- Shanghai 200433
- China
| | - Jordan Lee
- Department of Materials Science
- Fudan University
- Shanghai 200433
- China
| | - Chaofan Yang
- Department of Materials Science
- Fudan University
- Shanghai 200433
- China
| | - Xiaoli Cui
- Department of Materials Science
- Fudan University
- Shanghai 200433
- China
| |
Collapse
|
18
|
Crabbe BW, Kuehm OP, Bennett JC, Hallett-Tapley GL. Light-activated Ullmann homocoupling of aryl halides catalyzed using gold nanoparticle-functionalized potassium niobium oxides. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00996a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Lamellar, or layered, potassium niobium oxide perovskites are a class of underdeveloped semiconductors in organic photocatalysis that offer the inherent advantages of larger particle size and ease of recoverability as compared to traditional semiconductor materials.
Collapse
Affiliation(s)
- Bry W. Crabbe
- Department of Chemistry
- St. Francis Xavier University
- Antigonish
- Canada
| | - Oliver P. Kuehm
- Department of Chemistry
- St. Francis Xavier University
- Antigonish
- Canada
| | | | | |
Collapse
|
19
|
Qin Y, Li H, Dong H, Ma C, Li X, Liu X, Liu Y, Li C, Yan Y. Enhanced photocatalytic performance and stability of visible-light-driven Z-scheme CdS/Ag/g-C3N4 nanosheets photocatalyst. NEW J CHEM 2018. [DOI: 10.1039/c8nj02057d] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Z-scheme CdS/Ag/g-C3N4 nanosheets photocatalyst was synthesized by combining the hydrothermal and photo-deposition techniques, where Ag nanoparticles as carrier transport channels significantly improve the separation efficiency of electron–hole pairs.
Collapse
Affiliation(s)
- Yingying Qin
- Research Center of Fluid Machinery Engineering and Technology
- Jiangsu University
- Zhenjiang
- China
| | - Hong Li
- Research Center of Fluid Machinery Engineering and Technology
- Jiangsu University
- Zhenjiang
- China
| | - Hongjun Dong
- Institute of Green Chemistry and Chemical Technology
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Changchang Ma
- Institute of Green Chemistry and Chemical Technology
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Xiuying Li
- Institute of Green Chemistry and Chemical Technology
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Xinlin Liu
- School of Energy and Power Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Yang Liu
- School of Physics
- Jilin Normal University
- Siping
- China
| | - Chunxiang Li
- Institute of Green Chemistry and Chemical Technology
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Yongsheng Yan
- Institute of Green Chemistry and Chemical Technology
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- China
| |
Collapse
|
20
|
Shen L, Xia Y, Lin S, Liang S, Wu L. An unsaturated metal site-promoted approach to construct strongly coupled noble metal/HNb 3O 8 nanosheets for efficient thermo/photo-catalytic reduction. NANOSCALE 2017; 9:14654-14663. [PMID: 28937167 DOI: 10.1039/c7nr05288j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Creating two-dimensional (2D) crystal-metal heterostructures with an ultrathin thickness has spurred increasing research endeavors in catalysis because of its fascinating opportunities in tuning the electronic state at the surface and enhancing the chemical reactivity. Here we report a novel and facile Nb4+-assisted strategy for the in situ growth of highly dispersed Pd nanoparticles (NPs) on monolayer HNb3O8 nanosheets (HNb3O8 NS) constituting a 2D Pd/HNb3O8 NS heterostructure composite without using extra reducing agents and stabilizing agents. The Pd NP formation is directed via a redox reaction between an oxidative Pd salt precursor (H2PdCl4) and reductive unsaturated surface metal (Nb4+) sites induced by light irradiation on monolayer HNb3O8 NS. The periodic arrangement of metal Nb nodes on HNb3O8 NS leads to a homogeneous distribution of Pd NPs. Density functional theory (DFT) calculations reveal that the direct redox reaction between the Nb4+ and Pd2+ ions leads to a strong chemical interaction between the formed Pd metal NPs and the monolayer HNb3O8 support. Consequently, the as-obtained Pd/HNb3O8 composite serves as a highly efficient bifunctional catalyst in both heterogeneous thermocatalytic and photocatalytic selective reduction of aromatic nitro compounds in water under ambient conditions. The achieved high activity originates from the unique 2D nanosheet configuration and in situ Pd incorporation, which leads to a large active surface area, strong metal-support interaction and enhanced charge transport capability. Moreover, this facile Nb4+-assisted synthetic route has demonstrated to be general, which can be applied to load other metals such as Au and Pt on monolayer HNb3O8 NS. It is anticipated that this work can extend the facile preparation of noble metal/nanosheet 2D heterostructures, as well as promote the simultaneous capture of duple renewable thermal and photon energy sources to drive an energy efficient catalytic process.
Collapse
Affiliation(s)
- Lijuan Shen
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, P.R. China.
| | | | | | | | | |
Collapse
|
21
|
Zhou Y, Wen T, Zhang X, Chang B, Kong W, Guo Y, Yang B, Wang Y. A Multiple Structure-Design Strategy towards Ultrathin Niobate Perovskite Nanosheets with Thickness-Dependent Photocatalytic Hydrogen-Evolution Performance. Chem Asian J 2017; 12:2727-2733. [DOI: 10.1002/asia.201701001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 08/18/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Yannan Zhou
- Institute of Nanostructured Functional Materials; Huanghe Science and Technology College; Zhengzhou Henan 450006 P.R. China
- Henan Provincial Key Laboratory of Nano-composite materials and Applications; Zhengzhou Henan 450006 P.R. China
| | - Ting Wen
- Institute of Nanostructured Functional Materials; Huanghe Science and Technology College; Zhengzhou Henan 450006 P.R. China
- Henan Provincial Key Laboratory of Nano-composite materials and Applications; Zhengzhou Henan 450006 P.R. China
| | - Xiaofan Zhang
- Institute of Nanostructured Functional Materials; Huanghe Science and Technology College; Zhengzhou Henan 450006 P.R. China
- Henan Provincial Key Laboratory of Nano-composite materials and Applications; Zhengzhou Henan 450006 P.R. China
| | - Binbin Chang
- Institute of Nanostructured Functional Materials; Huanghe Science and Technology College; Zhengzhou Henan 450006 P.R. China
- Henan Provincial Key Laboratory of Nano-composite materials and Applications; Zhengzhou Henan 450006 P.R. China
| | - Weiqian Kong
- Institute of Nanostructured Functional Materials; Huanghe Science and Technology College; Zhengzhou Henan 450006 P.R. China
- Henan Provincial Key Laboratory of Nano-composite materials and Applications; Zhengzhou Henan 450006 P.R. China
| | - Yanzhen Guo
- Institute of Nanostructured Functional Materials; Huanghe Science and Technology College; Zhengzhou Henan 450006 P.R. China
- Henan Provincial Key Laboratory of Nano-composite materials and Applications; Zhengzhou Henan 450006 P.R. China
| | - Baocheng Yang
- Institute of Nanostructured Functional Materials; Huanghe Science and Technology College; Zhengzhou Henan 450006 P.R. China
- Henan Provincial Key Laboratory of Nano-composite materials and Applications; Zhengzhou Henan 450006 P.R. China
| | - Yonggang Wang
- Center for High Pressure Science and Technology Advanced Research, HPSTAR; Beijing 100094 P.R. China
- HPSynC, Geophysical Laboratory; Carnegie Institution of Washington, Argonne; IL 60439 USA
| |
Collapse
|
22
|
Lv C, Chen G, Zhou X, Zhang C, Wang Z, Zhao B, Li D. Oxygen-Induced Bi 5+-Self-Doped Bi 4V 2O 11 with a p-n Homojunction Toward Promoting the Photocatalytic Performance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:23748-23755. [PMID: 28653534 DOI: 10.1021/acsami.7b05302] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Bi5+-self-doped Bi4V2O11 (Bi5+-BVO) nanotubes with p-n homojunctions are fabricated via an oxygen-induced strategy. Calcinating the as-spun fibers with abundant oxygen plays a pivotal role in achieving Bi5+ self-doping. Density functional theory calculations and experimental results indicate that Bi5+ self-doping can narrow the band gap of Bi4V2O11, which contributes to enhancing light harvesting. Moreover, Bi5+ self-doping endows Bi4V2O11 with n- and p-type semiconductor characteristics simultaneously, resulting in the construction of p-n homojunctions for retarding rapid electron-hole recombination. Benefiting from these favorable properties, Bi5+-BVO exhibits a superior photocatalytic performance in contrast to that of pristine Bi4V2O11. Furthermore, this is the first report describing the achievement of p-n homojunctions through self-doping, which gives full play to the advantages of self-doping.
Collapse
Affiliation(s)
- Chade Lv
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin 150001, P. R. China
| | - Gang Chen
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin 150001, P. R. China
| | - Xin Zhou
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin 150001, P. R. China
| | - Congmin Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin 150001, P. R. China
| | - Zukun Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin 150001, P. R. China
| | - Boran Zhao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin 150001, P. R. China
| | - Danying Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology , Harbin 150001, P. R. China
| |
Collapse
|
23
|
Liu X, Que W, Chen P, Tian Y, Liu J, He Z, Zhou H, Bing Kong L. Facile preparation of protonated hexaniobate nanosheets and its enhanced photocatalytic activity. NANOTECHNOLOGY 2017; 28:235702. [PMID: 28516900 DOI: 10.1088/1361-6528/aa6b4f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Exfoliated hexaniobate nanosheets E-H2K2Nb6O17-x (E-HKNO) with broad light absorption (up to 850 nm) and high adsorption properties were prepared via ion exchange and transient annealing processes with micron-size K4Nb6O17 powders as the precursor. The as-prepared E-HKNO nanosheets show excellent visible light photodegradation performances when compared to degussa P25, which was evaluated in terms of degradation of Rhodamine B (Rh B). High adsorption and broad light absorption characteristics could be attributed to the exfoliation behavior and the reduction of surface Nb5+ to Nb4+, which was confirmed by x-ray photoelectron spectroscopy (XPS) and Raman spectra. From the Mott-Schottky analysis, the E-HKNO is an n-type semiconductor and has a higher flat band voltage (-0.46 V versus RHE at pH = 7), compared with K4Nb6O17. In addition, the electrochemical impedance spectroscopy (EIS) indicates that the E-HKNO nanosheets have an increased semiconductor-electrolyte charge transfer resistance, which is not conducive to the separation of photogenerated carriers (e--h+). Accordingly, a small amount of holes scavenger (EDTA) was added to improve the photodegradation performance of the E-HKNO, since the holes scavenger can inhibit the recombination of the photogenerated carriers. This work provides not only a facile method for the preparation of an efficient E-HKNO nanosheets photocatalyst, but also new insights for further enhancing the photodegradation performance by adding trace scavenger.
Collapse
Affiliation(s)
- Xiaobin Liu
- Electronic Materials Research Laboratory, International Center for Dielectric Research, Key Laboratory of the Ministry of Education, School of Electronic & Information Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Deng Q, Li M, Wang J, Zhang P, Jiang K, Zhang J, Hu Z, Chu J. Exploring optoelectronic properties and mechanisms of layered ferroelectric K 4Nb 6O 17 nanocrystalline films and nanolaminas. Sci Rep 2017; 7:1883. [PMID: 28507293 PMCID: PMC5432499 DOI: 10.1038/s41598-017-01838-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 04/04/2017] [Indexed: 12/05/2022] Open
Abstract
Two-dimensional layered K4Nb6O17 (KN) was easily formed as a secondary phase caused by the volatilization of alkali metal ions, when preparing ferroelectric KxNa1−xNbO3 based ceramics and films. In this work, it was believed that KN film is with weak ferroelectricity and has a little effect on the ferroelectric properties of KxNa1−xNbO3 based films. Moreover, temperature dependent (77–500 K) dielectric functions of KN film have been firstly extracted by fitting ellipsometric spectra with the Adachi dielectric function model and a four-phase layered model. The high-frequency dielectric constant linearly increases and optical band gap slightly decreases with increasing the temperature. We also research its photoelectrochemical properties and its application in high-efficient light-induced H2 evolution. In addition, X-ray photoelectron spectroscopy, Raman scattering, temperature dependent transmittance and infrared reflectance spectra, and first-principles calculation were conjointly performed to further reveal the intrinsic optoelectronic features and relevant mechanisms of KN.
Collapse
Affiliation(s)
- Qinglin Deng
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (ECNU), Shanghai, China.,Department of Electronic Engineering, East China Normal University, Shanghai, 200241, China
| | - Mengjiao Li
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (ECNU), Shanghai, China.,Department of Electronic Engineering, East China Normal University, Shanghai, 200241, China
| | - Junyong Wang
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (ECNU), Shanghai, China.,Department of Electronic Engineering, East China Normal University, Shanghai, 200241, China
| | - Peng Zhang
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (ECNU), Shanghai, China.,Department of Electronic Engineering, East China Normal University, Shanghai, 200241, China
| | - Kai Jiang
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (ECNU), Shanghai, China.,Department of Electronic Engineering, East China Normal University, Shanghai, 200241, China
| | - Jinzhong Zhang
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (ECNU), Shanghai, China.,Department of Electronic Engineering, East China Normal University, Shanghai, 200241, China
| | - Zhigao Hu
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (ECNU), Shanghai, China. .,Department of Electronic Engineering, East China Normal University, Shanghai, 200241, China.
| | - Junhao Chu
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (ECNU), Shanghai, China.,Department of Electronic Engineering, East China Normal University, Shanghai, 200241, China
| |
Collapse
|
25
|
Piggott EK, Hope TO, Crabbe BW, Jalbert PM, Orlova G, Hallett-Tapley GL. Exploiting the photocatalytic activity of gold nanoparticle-functionalized niobium oxide perovskites in nitroarene reductions. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01820g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Novel gold nanoparticle@niobium oxide perovskite composites promote the photoreduction of para-substituted nitroarenes, where electron-withdrawing groups accelerate the photocatalytic reaction.
Collapse
Affiliation(s)
- Emily K. Piggott
- Department of Chemistry
- St. Francis Xavier University
- Antigonish
- Canada
| | - Taylor O. Hope
- Department of Chemistry
- St. Francis Xavier University
- Antigonish
- Canada
| | - Bry W. Crabbe
- Department of Chemistry
- St. Francis Xavier University
- Antigonish
- Canada
| | - Pierre-Michel Jalbert
- Department of Chemistry
- St. Francis Xavier University
- Antigonish
- Canada
- Département de Chimie
| | - Galina Orlova
- Department of Chemistry
- St. Francis Xavier University
- Antigonish
- Canada
| | | |
Collapse
|
26
|
Zhou Y, Wen T, Kong W, Yang B, Wang Y. The impact of nitrogen doping and reduced-niobium self-doping on the photocatalytic activity of ultra-thin Nb3O8− nanosheets. Dalton Trans 2017; 46:13854-13861. [DOI: 10.1039/c7dt03006a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Ultra-thin [Nb3O8]− nanosheets with N doping, reduced-Nb doping and N/reduced-Nb codoping were fabricated by combining chemically controlled syntheses and liquid exfoliation, which enable comparative studies on the doping effect for photocatalytic H2 evolution.
Collapse
Affiliation(s)
- Yannan Zhou
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
- Henan Provincial Key Laboratory of Nano-composite and Applications
| | - Ting Wen
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
- Henan Provincial Key Laboratory of Nano-composite and Applications
| | - Weiqian Kong
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
- Henan Provincial Key Laboratory of Nano-composite and Applications
| | - Baocheng Yang
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
- Henan Provincial Key Laboratory of Nano-composite and Applications
| | - Yonggang Wang
- Center for High Pressure Science and Technology Advanced Research (HPSTAR)
- Beijing 100094
- China
- HPSynC
- Geophysical Laboratory
| |
Collapse
|
27
|
Deng Q, Li M, Wang J, Zhang P, Jiang K, Zhang J, Hu Z, Chu J. Boosted adsorption–photocatalytic activities and potential lithium intercalation applications of layered potassium hexaniobate nano-family. RSC Adv 2017. [DOI: 10.1039/c7ra03499g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We demonstrated that the KN nano-family (including KN nanolaminas and nano hollow spheres) can be derived from the same Nb2O5-based hydrothermal reaction.
Collapse
Affiliation(s)
- Qinglin Deng
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai)
- Department of Electronic Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Mengjiao Li
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai)
- Department of Electronic Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Junyong Wang
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai)
- Department of Electronic Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Peng Zhang
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai)
- Department of Electronic Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Kai Jiang
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai)
- Department of Electronic Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Jinzhong Zhang
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai)
- Department of Electronic Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Zhigao Hu
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai)
- Department of Electronic Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Junhao Chu
- Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai)
- Department of Electronic Engineering
- East China Normal University
- Shanghai 200241
- China
| |
Collapse
|
28
|
Yu H, Shi R, Zhao Y, Waterhouse GIN, Wu LZ, Tung CH, Zhang T. Smart Utilization of Carbon Dots in Semiconductor Photocatalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:9454-9477. [PMID: 27623955 DOI: 10.1002/adma.201602581] [Citation(s) in RCA: 307] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 06/24/2016] [Indexed: 05/17/2023]
Abstract
Efficient capture of solar energy will be critical to meeting the energy needs of the future. Semiconductor photocatalysis is expected to make an important contribution in this regard, delivering both energy carriers (especially H2 ) and valuable chemical feedstocks under direct sunlight. Over the past few years, carbon dots (CDs) have emerged as a promising new class of metal-free photocatalyst, displaying semiconductor-like photoelectric properties and showing excellent performance in a wide variety of photoelectrochemical and photocatalytic applications owing to their ease of synthesis, unique structure, adjustable composition, ease of surface functionalization, outstanding electron-transfer efficiency and tunable light-harvesting range (from deep UV to the near-infrared). Here, recent advances in the rational design of CDs-based photocatalysts are highlighted and their applications in photocatalytic environmental remediation, water splitting into hydrogen, CO2 reduction, and organic synthesis are discussed.
Collapse
Affiliation(s)
- Huijun Yu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Run Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yufei Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | | | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| |
Collapse
|
29
|
Jia J, O'Brien PG, He L, Qiao Q, Fei T, Reyes LM, Burrow TE, Dong Y, Liao K, Varela M, Pennycook SJ, Hmadeh M, Helmy AS, Kherani NP, Perovic DD, Ozin GA. Visible and Near-Infrared Photothermal Catalyzed Hydrogenation of Gaseous CO 2 over Nanostructured Pd@Nb 2O 5. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016; 3:1600189. [PMID: 27840802 PMCID: PMC5095794 DOI: 10.1002/advs.201600189] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/12/2016] [Indexed: 05/18/2023]
Abstract
The reverse water gas shift (RWGS) reaction driven by Nb2O5 nanorod-supported Pd nanocrystals without external heating using visible and near infrared (NIR) light is demonstrated. By measuring the dependence of the RWGS reaction rates on the intensity and spectral power distribution of filtered light incident onto the nanostructured Pd@Nb2O5 catalyst, it is determined that the RWGS reaction is activated photothermally. That is the RWGS reaction is initiated by heat generated from thermalization of charge carriers in the Pd nanocrystals that are excited by interband and intraband absorption of visible and NIR light. Taking advantage of this photothermal effect, a visible and NIR responsive Pd@Nb2O5 hybrid catalyst that efficiently hydrogenates CO2 to CO at an impressive rate as high as 1.8 mmol gcat-1 h-1 is developed. The mechanism of this photothermal reaction involves H2 dissociation on Pd nanocrystals and subsequent spillover of H to the Nb2O5 nanorods whereupon adsorbed CO2 is hydrogenated to CO. This work represents a significant enhancement in our understanding of the underlying mechanism of photothermally driven CO2 reduction and will help guide the way toward the development of highly efficient catalysts that exploit the full solar spectrum to convert gas-phase CO2 to valuable chemicals and fuels.
Collapse
Affiliation(s)
- Jia Jia
- Department of Materials Science & Engineering University of Toronto 184 College Street Toronto Ontario M5S 3E4 Canada
| | - Paul G O'Brien
- Materials Chemistry and Nanochemistry Research Group Solar Fuels Cluster Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Le He
- Institute of Functional Nano and Soft Materials (FUNSOM) Jiangsu Key Laboratory of Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University 215123 Suzhou Jiangsu China
| | - Qiao Qiao
- Materials Science and Technology Department Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Teng Fei
- Materials Chemistry and Nanochemistry Research Group Solar Fuels Cluster Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Laura M Reyes
- Materials Chemistry and Nanochemistry Research Group Solar Fuels Cluster Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Timothy E Burrow
- Materials Chemistry and Nanochemistry Research Group Solar Fuels Cluster Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Yuchan Dong
- Materials Chemistry and Nanochemistry Research Group Solar Fuels Cluster Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Kristine Liao
- Materials Chemistry and Nanochemistry Research Group Solar Fuels Cluster Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Maria Varela
- GFMC & Instituto Pluridisciplinar Universidad Complutense de Madrid Madrid 28040 Spain
| | - Stephen J Pennycook
- National University of Singapore Department of Materials Science and Engineering Block EA #07-14, 9 Engineering Drive 1 117575 Singapore Singapore
| | - Mohamad Hmadeh
- Department of Chemistry American University of Beirut Beirut 11-0236 Lebanon
| | - Amr S Helmy
- Department of Electrical and Computing Engineering University of Toronto 10 King's College Road Toronto Ontario M5S 3G4 Canada
| | - Nazir P Kherani
- Department of Materials Science & Engineering University of Toronto 184 College Street Toronto Ontario M5S 3E4 Canada; Department of Electrical and Computing Engineering University of Toronto 10 King's College Road Toronto Ontario M5S 3G4 Canada
| | - Doug D Perovic
- Department of Materials Science & Engineering University of Toronto 184 College Street Toronto Ontario M5S 3E4 Canada
| | - Geoffrey A Ozin
- Materials Chemistry and Nanochemistry Research Group Solar Fuels Cluster Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| |
Collapse
|
30
|
Zhang G, Jiang W, Hua S, Zhao H, Zhang L, Sun Z. Constructing bulk defective perovskite SrTiO 3 nanocubes for high performance photocatalysts. NANOSCALE 2016; 8:16963-16968. [PMID: 27714061 DOI: 10.1039/c6nr04859e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Defects (Ti3+ or oxygen vacancies) have been demonstrated to promote the charge separation process in TiO2 based photocatalysts. Particularly, the bulk defects within a certain concentration can give a great enhancement for both light absorption and charge separation efficiency. In this report, we explored a one-step molten salts route to synthesize SrTiO3 nanocubes with bulk defects (Ti3+ doped) by using SrCO3 as a Sr source, and TiO2 and Ti powder as Ti sources. The amount of defects can be tuned by changing the molar ratio of Ti/TiO2. The corresponding bandgap of SrTiO3 can be changed from 3.29 to 2.73 eV with the increase of defects. X-ray diffraction and electron microscopy disclose that SrTiO3 is highly crystalline and has a cubic morphology. X-ray photoelectron spectroscopy and electron paramagnetic resonance indicate that the as-prepared SrTiO3 is close to the Ti3+ doped SrTiO3. Surface photovoltage spectroscopy (SPS) and field-induced SPS confirm that Ti3+ doping in the SrTiO3 turns it from an n-type semiconductor to p-type. The SrTiO3 with an optimal amount of defects exhibits highly enhanced photocatalytic performance. An excess amount of defects results in a weak SPS response and photocatalytic performance.
Collapse
Affiliation(s)
- Guoqiang Zhang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun, 130033, Jilin, P. R. China
| | - Wenshuai Jiang
- Beijing Key Laboratory of Green Catalysis and Separation Department of Chemistry, Chemical Engineering School of Environmental and Energy, University of Beijing Technology, Beijing, 100022, P. R. China.
| | - Shixin Hua
- Beijing Key Laboratory of Green Catalysis and Separation Department of Chemistry, Chemical Engineering School of Environmental and Energy, University of Beijing Technology, Beijing, 100022, P. R. China.
| | - Haifeng Zhao
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun, 130033, Jilin, P. R. China
| | - Ligong Zhang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun, 130033, Jilin, P. R. China
| | - Zaicheng Sun
- Beijing Key Laboratory of Green Catalysis and Separation Department of Chemistry, Chemical Engineering School of Environmental and Energy, University of Beijing Technology, Beijing, 100022, P. R. China.
| |
Collapse
|
31
|
Recent developments in visible-light photocatalytic degradation of antibiotics. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61054-3] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
32
|
Kamada K, Tanaka Y, Tokunaga M, Ueda T, Hyodo T, Shimizu Y. Multicolour photochromism of colloidal solutions of niobate nanosheets intercalated with several kinds of metal ions. Chem Commun (Camb) 2016; 52:3308-11. [PMID: 26821602 DOI: 10.1039/c5cc09270a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Colourless and transparent colloidal solutions of niobate nanosheets intercalated with some kinds of metal ions (M-NNS, M: metal) showed quasi-reversible photochromism. Ultraviolet light irradiation of the solutions induced a change in color while maintaining the transparency, and the color change was dependent on the metal ions. The coloured solutions were bleached by exposure to an oxidizing atmosphere. This cycle could be repeated several times.
Collapse
Affiliation(s)
- Kai Kamada
- Department of Chemistry and Materials Engineering, Graduate School of Engineering, Nagasaki University, Nagasaki 852-8521, Japan.
| | | | | | | | | | | |
Collapse
|
33
|
Zhang X, Zhao Z, Zhang W, Zhang G, Qu D, Miao X, Sun S, Sun Z. Surface Defects Enhanced Visible Light Photocatalytic H2 Production for Zn-Cd-S Solid Solution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:793-801. [PMID: 26691211 DOI: 10.1002/smll.201503067] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 11/09/2015] [Indexed: 06/05/2023]
Abstract
In order to investigate the defect effect on photocatalytic performance of the visible light photocatalyst, Zn-Cd-S solid solution with surface defects is prepared in the hydrazine hydrate. X-ray photoelectron spectra and photoluminescence results confirm the existence of defects, such as sulfur vacancies, interstitial metal, and Zn and Cd in the low valence state on the top surface of solid solutions. The surface defects can be effectively removed by treating with sulfur vapor. The solid solution with surface defect exhibits a narrower band gap, wider light absorption range, and better photocatalytic perfomance. The optimized solid solution with defects exhibits 571 μmol h(-1) for 50 mg photocatalyst without loading Pt as cocatalyst under visible light irradiation, which is fourfold better than that of sulfur vapor treated samples. The wavelength dependence of photocatalytic activity discloses that the enhancement happens at each wavelength within the whole absorption range. The theoretical calculation shows that the surface defects induce the conduction band minimum and valence band maximum shift downward and upward, respectively. This constructs a type I junction between bulk and surface of solid solution, which promotes the migration of photogenerated charges toward the surface of nanostructure and leads to enhanced photocatalytic activity. Thus a new method to construct highly efficient visible light photocatalysts is opened.
Collapse
Affiliation(s)
- Xiaoyan Zhang
- State key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, CAS, 3888 East Nanhu Road, Changchun, Jilin, 130033, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhao Zhao
- State key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, CAS, 3888 East Nanhu Road, Changchun, Jilin, 130033, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wanwan Zhang
- Beijing Key Laboratory of Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, 100 Pingleyuan, Beijing, 100124, P. R. China
| | - Guoqiang Zhang
- State key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, CAS, 3888 East Nanhu Road, Changchun, Jilin, 130033, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Dan Qu
- State key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, CAS, 3888 East Nanhu Road, Changchun, Jilin, 130033, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiang Miao
- State key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, CAS, 3888 East Nanhu Road, Changchun, Jilin, 130033, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shaorui Sun
- Beijing Key Laboratory of Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, 100 Pingleyuan, Beijing, 100124, P. R. China
| | - Zaicheng Sun
- State key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, CAS, 3888 East Nanhu Road, Changchun, Jilin, 130033, P. R. China
- Beijing Key Laboratory of Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, 100 Pingleyuan, Beijing, 100124, P. R. China
| |
Collapse
|
34
|
Li D, Li Q, He J, Hu L, Hu J. Niobate nanoscroll composite with Fe2O3 particles under moderate conditions: assembly and application research. NEW J CHEM 2016. [DOI: 10.1039/c5nj02120k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe2O3 nanoparticles are crosslinked to the niobate nanoscroll surface by association with terminal Nb–OH groups.
Collapse
Affiliation(s)
- Dewei Li
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- P. R. China
| | - Qingjie Li
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- P. R. China
| | - Jie He
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- P. R. China
| | - Lifang Hu
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- P. R. China
| | - Jinsong Hu
- School of Chemical Engineering
- Anhui University of Science and Technology
- Huainan
- P. R. China
| |
Collapse
|
35
|
Gu Q, Zhu K, Sun Q, Liu J, Wang J, Qiu J, Wang J. A metastable cubic phase of sodium niobate nanoparticles stabilized by chemically bonded solvent molecules. Phys Chem Chem Phys 2016; 18:33171-33179. [DOI: 10.1039/c6cp07423e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A facile and green alternative was provided to prepare a metastable phase of cubic NaNbO3 nanoparticles. A new insight into the stabilization of cubic NaNbO3 nanoparticles by chemically bonded organic molecules was proposed on the basis of systematic structural and surface analyses.
Collapse
Affiliation(s)
- Qilin Gu
- State Key Laboratory of Mechanics and Control of Mechanical Structures
- College of Aerospace Engineering
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- China
| | - Kongjun Zhu
- State Key Laboratory of Mechanics and Control of Mechanical Structures
- College of Aerospace Engineering
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- China
| | - Qiaomei Sun
- State Key Laboratory of Mechanics and Control of Mechanical Structures
- College of Aerospace Engineering
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- China
| | - Jinsong Liu
- College of Materials Science and Engineering
- Nanjing University of Aeronautics and Astronautics
- Nanjing 210016
- China
| | - Jing Wang
- State Key Laboratory of Mechanics and Control of Mechanical Structures
- College of Aerospace Engineering
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- China
| | - Jinhao Qiu
- State Key Laboratory of Mechanics and Control of Mechanical Structures
- College of Aerospace Engineering
- Nanjing University of Aeronautics and Astronautics
- Nanjing
- China
| | - John Wang
- Department of Materials Science and Engineering
- National University of Singapore
- Singapore 117576
- Singapore
| |
Collapse
|
36
|
Din IU, Shaharun MS, Subbarao D, Naeem A, Hussain F. Influence of niobium on carbon nanofibres based Cu/ZrO 2 catalysts for liquid phase hydrogenation of CO 2 to methanol. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.06.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
37
|
Zhou Y, Wen T, Guo Y, Yang B, Wang Y. Controllable doping of nitrogen and tetravalent niobium affords yellow and black calcium niobate nanosheets for enhanced photocatalytic hydrogen evolution. RSC Adv 2016. [DOI: 10.1039/c6ra11407e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Yellow (N-doped) and black (N-/Nb4+-codoped) [Ca2Nb3O10]− nanosheets with molecular thickness were fabricated by liquid exfoliation of selectively doped KCa2Nb3O10 perovskite.
Collapse
Affiliation(s)
- Yannan Zhou
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
- Henan Provincial Key Laboratory of Nano-composite and Applications
| | - Ting Wen
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
- Henan Provincial Key Laboratory of Nano-composite and Applications
| | - Yanzhen Guo
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
- Henan Provincial Key Laboratory of Nano-composite and Applications
| | - Baocheng Yang
- Institute of Nanostructured Functional Materials
- Huanghe Science and Technology College
- Zhengzhou
- China
- Henan Provincial Key Laboratory of Nano-composite and Applications
| | - Yonggang Wang
- High Pressure Science and Engineering Centre
- University of Nevada Las Vegas
- Las Vegas 89154
- USA
| |
Collapse
|
38
|
Zhou C, Zhao Y, Shang L, Shi R, Wu LZ, Tung CH, Zhang T. Facile synthesis of ultrathin SnNb2O6 nanosheets towards improved visible-light photocatalytic H2-production activity. Chem Commun (Camb) 2016; 52:8239-42. [DOI: 10.1039/c6cc03739a] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Ultrathin SnNb2O6 nanosheets with enhanced visible-light photocatalytic H2-production activity were prepared for the first time via a facile hydrothermal route using ultrathin K4Nb6O17 nanosheets as the precursor.
Collapse
Affiliation(s)
- Chao Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Yufei Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Lu Shang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Run Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing
- P. R. China
| |
Collapse
|
39
|
Yu S, Huang H, Dong F, Li M, Tian N, Zhang T, Zhang Y. Synchronously Achieving Plasmonic Bi Metal Deposition and I(-) Doping by Utilizing BiOIO3 as the Self-Sacrificing Template for High-Performance Multifunctional Applications. ACS APPLIED MATERIALS & INTERFACES 2015; 7:27925-33. [PMID: 26605639 DOI: 10.1021/acsami.5b09994] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Herein, we uncover simultaneously achieving plasmonic Bi metal deposition and I(-) doping by employing wide-band-gap BiOIO3 as the self-sacrificing template. It was synthesized via a facile NaBH4-assisted in situ reduction route under ambient conditions. The reducing extent as well as photocatalytic levels can be easily modulated by controlling the concentration of NaBH4 solution. It is interesting that the band gap of BiOIO3 can be continuously narrowed by the modification, and the photoresponse range is drastically extended to cover the whole visible region. Bi/I(-) codecorated BiOIO3 not only exhibits profoundly upgraded photoreactivity in comparison with pristine BiOIO3 but also shows universally strong photooxidation properties toward decomposition of multiple industrial contaminants and pharmaceutical, including phenol, 2,4-Dichlorophenol (2,4-DCP), bisphenol A (BPA), dye model Rhodamine (RhB), tetracycline hydrochloride, and gaseous NO under visible light (λ ≥ 420 nm) or simulated solar light irradiation. It also outperforms the well-known and important photocatalysts C3N4, BiOBr, and Bi2WO6 for NO removal. The cooperative effects from Bi SPR and I(-) doping endow BiOIO3 with a narrowed band gap and highly boosted separation of charge carriers, thus responsible for the outstanding catalytic activity. The present study provides an absorbing candidate for practical environmental applications and also furthers our understanding of developing high-performance photocatalysts by manipulating manifold strategies in a facile way.
Collapse
Affiliation(s)
- Shixin Yu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences , Beijing 100083, China
| | - Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences , Beijing 100083, China
| | - Fan Dong
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environmental and Bio-logical Engineering, Chongqing Technology and Business University , Chongqing 400067, China
| | - Min Li
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences , Beijing 100083, China
| | - Na Tian
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences , Beijing 100083, China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences , Beijing 100190, China
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences , Beijing 100083, China
| |
Collapse
|
40
|
Tunable photocatalytic selectivity and stability of Ba-doped Ag3PO4 hollow nanosheets. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)60938-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
41
|
Zhang F, Lu W, Xiao G, Liu Z, Xing F, Lyu C. The Effect of pH Values on the Synthesis, Microstructure and Photocatalytic Activity of Ce-Bi2O3by a Two-Step Hydrothermal Method. Photochem Photobiol 2015; 91:1064-70. [DOI: 10.1111/php.12496] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 06/19/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Fengjun Zhang
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Wei Lu
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Guosheng Xiao
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Zhuojing Liu
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
- Guangdong Huanqiu Contracting & Engineering Corporation; Guangzhou China
| | - Fanwei Xing
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Cong Lyu
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| |
Collapse
|
42
|
Wang M, Han J, Xiong H, Guo R. Yolk@Shell Nanoarchitecture of Au@r-GO/TiO₂ Hybrids as Powerful Visible Light Photocatalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:6220-6228. [PMID: 25996904 DOI: 10.1021/acs.langmuir.5b01099] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Yolk@shell nanostructures of Au@r-GO/TiO2 with mesoporous shells were prepared by a sol-gel coating process sequentially with GO and TiO2 on Au/SiO2 core/shell spheres, followed by calcination and template removal, where the silica interlayer acts as a template not only to produce the void space but also to promote the coating of the r-GO and TiO2 layer. The evaluation of visible light photocatalytic activities in dye decomposition and water-splitting H2 production demonstrated their superior photocatalytic performance, which indicates their potential as powerful photocatalysts.
Collapse
Affiliation(s)
- Minggui Wang
- †School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, PR China
| | - Jie Han
- †School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, PR China
| | - Huixin Xiong
- ‡School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, PR China
| | - Rong Guo
- †School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, PR China
| |
Collapse
|
43
|
Bai T, Xing S, Lou Y, Chen C, Huang H, Li C, Shi Z, Feng S. Colloidal Synthesis of Quaternary Wurtzite Cu 3 AlSnS 5 Nanocrystals and Their Photoresponsive Properties. Chempluschem 2015; 80:652-655. [PMID: 31973426 DOI: 10.1002/cplu.201402431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Indexed: 11/12/2022]
Abstract
Novel wurtzite Cu3 AlSnS5 nanocrystals with uniform size and shape are synthesized for the first time using a facile colloidal synthetic approach. The nanocrystals are characterized in detail and have a band gap of 1.35 eV. The photoresponsive behavior indicates their potential application in solar energy conversion devices.
Collapse
Affiliation(s)
- Tianyu Bai
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 0431 85168624
| | - Shanghua Xing
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 0431 85168624
| | - Yue Lou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 0431 85168624
| | - Cailing Chen
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 0431 85168624
| | - He Huang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 0431 85168624
| | - Chunguang Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 0431 85168624
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 0431 85168624
| | - Shouhua Feng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012 (P. R. China), Fax: (+86) 0431 85168624
| |
Collapse
|
44
|
Hu Y, Guo L. Rapid Preparation of Perovskite Lead Niobate Nanosheets by Ultrasonic-Assisted Exfoliation for Enhanced Visible-Light-Driven Photocatalytic Hydrogen Production. ChemCatChem 2015. [DOI: 10.1002/cctc.201402924] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
45
|
Sun P, Zhang X, Wang L, Li F, Wei Y, Wang C, Liu Y. Bilayer TiO2photoanode consisting of a nanowire–nanoparticle bottom layer and a spherical voids scattering layer for dye-sensitized solar cells. NEW J CHEM 2015. [DOI: 10.1039/c5nj00216h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bilayer TiO2photoanode prepared by a one-time spray technique on a TiO2NW array shows significantly enhanced photovoltaic performance in DSSCs.
Collapse
Affiliation(s)
- Panpan Sun
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
- College of Materials and Chemical Engineering
| | - Xintong Zhang
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
| | - Lingling Wang
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
| | - Fangchao Li
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
| | - Yongan Wei
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
| | - Changhua Wang
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
| | - Yichun Liu
- Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
| |
Collapse
|
46
|
Bai S, Jiang J, Zhang Q, Xiong Y. Steering charge kinetics in photocatalysis: intersection of materials syntheses, characterization techniques and theoretical simulations. Chem Soc Rev 2015; 44:2893-939. [DOI: 10.1039/c5cs00064e] [Citation(s) in RCA: 782] [Impact Index Per Article: 86.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review outlines the recent progress on probing and steering charge kinetics toward designing highly efficient photocatalysts.
Collapse
Affiliation(s)
- Song Bai
- Hefei National Laboratory for Physical Sciences at the Microscale
- Collaborative Innovation Center of Chemistry for Energy Materials
- Synergetic Innovation Center of Quantum Information and Quantum Physics
- and School of Chemistry and Materials Science
- University of Science and Technology of China
| | - Jun Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale
- Collaborative Innovation Center of Chemistry for Energy Materials
- Synergetic Innovation Center of Quantum Information and Quantum Physics
- and School of Chemistry and Materials Science
- University of Science and Technology of China
| | - Qun Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale
- Collaborative Innovation Center of Chemistry for Energy Materials
- Synergetic Innovation Center of Quantum Information and Quantum Physics
- and School of Chemistry and Materials Science
- University of Science and Technology of China
| | - Yujie Xiong
- Hefei National Laboratory for Physical Sciences at the Microscale
- Collaborative Innovation Center of Chemistry for Energy Materials
- Synergetic Innovation Center of Quantum Information and Quantum Physics
- and School of Chemistry and Materials Science
- University of Science and Technology of China
| |
Collapse
|
47
|
Dong F, Xiong T, Sun Y, Zhang Y, Zhou Y. Controlling interfacial contact and exposed facets for enhancing photocatalysis via 2D–2D heterostructures. Chem Commun (Camb) 2015; 51:8249-52. [DOI: 10.1039/c5cc01993a] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The BiOIO3/BiOI 2D–2D layered heterostructures with intimate contact and exposed reactive facets endowed the heterostructures with highly enhanced visible photocatalysis.
Collapse
Affiliation(s)
- Fan Dong
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules
- College of Environmental and Biological Engineering
- Chongqing Technology and Business University
- Chongqing, 400067
- China
| | - Ting Xiong
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules
- College of Environmental and Biological Engineering
- Chongqing Technology and Business University
- Chongqing, 400067
- China
| | - Yanjuan Sun
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules
- College of Environmental and Biological Engineering
- Chongqing Technology and Business University
- Chongqing, 400067
- China
| | - Yuxin Zhang
- College of Materials Science and Engineering
- Chongqing University
- Chongqing 400044
- China
| | - Ying Zhou
- School of Materials Science and Engineering
- Southwest Petroleum University
- Chengdu
- China
| |
Collapse
|
48
|
Xu R, Xu Y, Huang Y, Shi Y, Zhang B. Diethylenetriamine-assisted hydrothermal synthesis of dodecahedral α-Fe2O3 nanocrystals with enhanced and stable photoelectrochemical activity. CrystEngComm 2015. [DOI: 10.1039/c4ce01872a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile diethylenetriamine-assisted protocol is developed to prepare dodecahedral α-Fe2O3 nanocrystals, which exhibit efficient photoelectrocatalytic water splitting activity.
Collapse
Affiliation(s)
- Rui Xu
- Department of Chemistry
- School of Science
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072, China
| | - You Xu
- Department of Chemistry
- School of Science
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072, China
| | - Yi Huang
- Department of Chemistry
- School of Science
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072, China
| | - Yanmei Shi
- Department of Chemistry
- School of Science
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072, China
| | - Bin Zhang
- Department of Chemistry
- School of Science
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072, China
| |
Collapse
|
49
|
Yue Z, Chu D, Huang H, Huang J, Yang P, Du Y, Zhu M, Lu C. A novel heterogeneous hybrid by incorporation of Nb2O5 microspheres and reduced graphene oxide for photocatalytic H2 evolution under visible light irradiation. RSC Adv 2015. [DOI: 10.1039/c5ra05348j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel heterogeneous hybrid composed of Nb2O5 microspheres and reduced graphene oxide as photocatalyst exhibits superior photocatalytic activity and stability.
Collapse
Affiliation(s)
- Zongkuan Yue
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Dongmei Chu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Hui Huang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Jie Huang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Ping Yang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Yukou Du
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Mingshan Zhu
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| | - Cheng Lu
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| |
Collapse
|
50
|
Luan J, Li Y. Photocatalytic Water Splitting for Hydrogen Production with Gd₂MSbO₇ (M = Fe, In, Y) Photocatalysts under Visible Light Irradiation. MATERIALS (BASEL, SWITZERLAND) 2014; 8:16-30. [PMID: 28787921 PMCID: PMC5455222 DOI: 10.3390/ma8010016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/18/2014] [Indexed: 01/18/2023]
Abstract
Novel photocatalysts Gd₂FeSbO₇, Gd₂InSbO₇ and Gd₂YSbO₇ were synthesized by the solid state reaction method for the first time. A comparative study about the structural and photocatalytic properties of Gd₂MSbO₇ (M = Fe, In, Y) was reported. The results showed that Gd₂FeSbO₇, Gd₂InSbO₇ and Gd₂YSbO₇ crystallized with the pyrochlore-type structure, cubic crystal system and space group Fd3m. The lattice parameter a for Gd₂FeSbO₇, Gd₂InSbO₇ or Gd₂YSbO₇ was 10.276026 Å, 10.449546 Å or 10.653651 Å. The band gap of Gd₂FeSbO₇, Gd₂InSbO₇ or Gd₂YSbO₇ was estimated to be 2.151 eV, 2.897 eV or 2.396 eV. For the photocatalytic water-splitting reaction, H₂ or O₂ evolution was observed from pure water with Gd₂FeSbO₇, Gd₂InSbO₇ or Gd₂YSbO₇ as catalyst under visible light irradiation (wavelength > 420 nm). Moreover, H₂ or O₂ also spilt by using Gd₂FeSbO₇, Gd₂InSbO₇ or Gd₂YSbO₇ as catalyst from CH₃OH/H₂O or AgNO₃/H₂O solutions under visible light irradiation (λ > 420 nm). Gd₂FeSbO₇ showed the highest activity compared with Gd₂InSbO₇ or Gd₂YSbO₇. At the same time, Gd₂InSbO₇ showed higher activity compared with Gd₂YSbO₇. The photocatalytic activities were further improved under visible light irradiation with Gd₂FeSbO₇, Gd₂InSbO₇ or Gd₂YSbO₇ being loaded by Pt, NiO or RuO₂. The effect of Pt was better than that of NiO or RuO₂ for improving the photocatalytic activity of Gd₂FeSbO₇, Gd₂InSbO₇ or Gd₂YSbO₇.
Collapse
Affiliation(s)
- Jingfei Luan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China.
| | - Yanyan Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093, China.
| |
Collapse
|