1
|
Tan P, Mao Z, Li Y, Yu J, Long L. Boosting photocatalytic NO oxidation mediated by high redox charge carriers from visible light-driven C 3N 4/UiO-67 S-scheme heterojunction photocatalyst. J Colloid Interface Sci 2024; 663:992-1004. [PMID: 38452548 DOI: 10.1016/j.jcis.2024.02.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/13/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
The construction of CN/UiO-67 (CNU) S-scheme heterojunction composites through in situ formation of UiO-67 on carbon nitride (C3N4) helps to address the limitations of carbon nitride (CN) in photocatalytic NO elimination. The optimized CNU3 demonstrates superior photocatalytic efficiency, which is attributed to electronic channels constructed by Zr-N bonds and S-scheme electron transport mechanism, effectively promoting the efficient separation of photogenerated charge carriers with high redox potentials. Density Functional Theory (DFT) calculations reveal redistributed electronic orbitals in CNU3, with progressive and continuous energy levels near the Fermi level, which bolsters electronic conduction. Comprehensive quenching experiments, Electron Paramagnetic Resonance (EPR), and in situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) analyses highlight a synergistic interplay of electrons, holes, and superoxide radicals in CNU3, inhibiting the generation of toxic nitrogen oxide intermediates and culminating in highly efficient photocatalytic NO oxidation. This study not only elucidates the mechanisms underpinning the enhanced performance of CNU3 heterojunctions but also offers new perspectives on the preparation and interfacial charge separation of heterojunction photocatalysts.
Collapse
Affiliation(s)
- Ping Tan
- Chongqing Key Laboratory of Catalysis and Environment Materials, College of Environment and Resources, Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, PR China
| | - Zhen Mao
- Chongqing Key Laboratory of Catalysis and Environment Materials, College of Environment and Resources, Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, PR China
| | - Yuhan Li
- Chongqing Key Laboratory of Catalysis and Environment Materials, College of Environment and Resources, Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, PR China.
| | - Jiayuan Yu
- Institute for Advanced Interdisciplinary Research (iAIR), School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China.
| | - Liangjun Long
- Chongqing Key Laboratory of Catalysis and Environment Materials, College of Environment and Resources, Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, PR China
| |
Collapse
|
2
|
Pei L, Luo Z, Wang X, Ma Z, Nie Y, Zhong J, Yang D, Bandaru S, Su BL. Tunable CO 2-to-syngas conversion via strong electronic coupling in S-scheme ZnGa 2O 4/g-C 3N 4 photocatalysts. J Colloid Interface Sci 2023; 652:636-645. [PMID: 37516580 DOI: 10.1016/j.jcis.2023.07.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 07/31/2023]
Abstract
The conversion of CO2 into syngas, a mixture of CO and H2, via photocatalytic reduction, is a promising approach towards achieving a sustainable carbon economy. However, the evolution of highly adjustable syngas, particularly without the use of sacrifice reagents or additional cocatalysts, remains a significant challenge. In this study, a step-scheme (S-scheme) 0D ZnGa2O4 nanodots (∼7 nm) rooted g-C3N4 nanosheets (denoted as ZnGa2O4/C3N4) heterojunction photocatalyst was synthesized vis a facial in-situ growth strategy for efficient CO2-to-syngas conversion. Both experimental and theoretical studies have demonstrated that the polymeric nature of g-C3N4 and highly distributed ZnGa2O4 nanodots synergistically contribute to a strong interaction between metal oxide and C3N4 support. Furthermore, the desirable S-scheme heterojunction in ZnGa2O4/C3N4 efficiently promotes charge separation, enabling strong photoredox ability. As a result, the S-scheme ZnGa2O4/C3N4 exhibited remarkable activity and selectivity in photochemical conversion of CO2 into syngas, with a syngas production rate of up to 103.3 μ mol g-1 h-1, even in the absence of sacrificial agents and cocatalyst. Impressively, the CO/H2 ratio of syngas can be tunable within a wide range from 1:4 to 2:1. This work exemplifies the effectiveness of a meticulously designed S-scheme heterojunction photocatalyst for CO2-to-syngas conversion with adjustable composition, thus paving the way for new possibilities in sustainable energy conversion and utilization.
Collapse
Affiliation(s)
- Lang Pei
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China; Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Hangzhou 310018, China
| | - Zhenggang Luo
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Xusheng Wang
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhanfeng Ma
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Yuhang Nie
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Jiasong Zhong
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Ding Yang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Sateesh Bandaru
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Bao-Lian Su
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, 430070 Wuhan, Hubei, China; Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, 61 rue de Bruxelles, B-5000 Namur, Belgium.
| |
Collapse
|
3
|
Sun Y, Li Y, Zhang X, Duan J, Dong J, Peng J, Sun J, Ai S, Hou J. Confined synthesis of g-C 3N 4 modified porous carbons for efficient removal of Cd ions. Sci Total Environ 2023; 888:164167. [PMID: 37201852 DOI: 10.1016/j.scitotenv.2023.164167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/20/2023]
Abstract
Carbon nitride (C3N4) nanosheets have excellent adsorption capacity, environmental friendliness, and high stability for heavy metal removal. However, its application in Cd-polluted soil is difficult as aggregation induces the specific surface area to substantially decrease. In this study, a series of C3N4 nanosheet-modified porous carbons (C3N4/PC-X) were prepared by a simple one-step calcination of mixed aerogels with different mass ratios (X) of carboxymethyl cellulose (CMC) and melamine. These were based on the confined effect of the CMC aerogel, whose 3D confined region controls the C3N4 morphology and prevents the aggregation of nanosheets. The resulting C3N4/PC-4 exhibited a porous structure with interpenetrating C3N4 nanosheets and carbon rods. C3N4/PC-4 was characterized by SEM, elemental analysis, XRD, FTIR and XPS, and the existence of C3N4 nanosheets was confirmed. Compared with that of unmodified porous carbons, the adsorption capacity of C3N4/PC-4 for Cd ions increased 3.97 times, up to 273.1 mg/g. The adsorption kinetics and adsorption isotherm analyses showed that the adsorption properties were in agreement with the quasi-second-order and Freundlich adsorption models. Moreover, the material had a good passivation effect on the Cd ions in the soil. The confined synthesis of aerogels could be extended to the preparation of other nanostructures.
Collapse
Affiliation(s)
- Yi Sun
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian 271018, PR China
| | - Yijing Li
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China
| | - Xiaoyue Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China
| | - Junling Duan
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China
| | - Jing Dong
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China
| | - Ju Peng
- Key Laboratory of Marine Eco-Environmental Science and Technology, Marine Bioresource and Environment Research Center, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, PR China
| | - Jianchao Sun
- School of Environment and Material Engineering, Yantai University, Yantai 264005, PR China
| | - Shiyun Ai
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China.
| | - Juying Hou
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, PR China; Key Laboratory of Agricultural Film Application of Ministry of Agriculture and Rural Affairs, Taian 271018, PR China.
| |
Collapse
|
4
|
Du H, Ma X, Li N, Yang L, Yang G, Li Q, Wang Q. Exceptional visible-light photoelectrocatalytic activity of dual Z-scheme Bi@BiOI-Bi 2O 3/C 3N 4 heterojunction for simultaneous remediation of Cr(VI) and phenol. J Colloid Interface Sci 2023; 640:132-143. [PMID: 36842419 DOI: 10.1016/j.jcis.2023.02.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/11/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023]
Abstract
Developing highly efficient and stable photocatalysts remains a major challenge for the remediation of environmental pollutants. In this work, the Bi0 decorated BiOI-Bi2O3/C3N4 heterojunction (Bi@BiOI-Bi2O3/C3N4) film was fabricated through ultrasonic stripping, I- etching and in situ UV-reduction processes and then characterized thoroughly by various analytical techniques. The characteristics of simultaneous mitigation of phenol and Cr(VI) were evaluated over Bi@BiOI-Bi2O3/C3N4 photoanode under visible light. The results exhibited that both phenol and Cr(VI) were removed completely by the photoanode at 2.5 V within 1.5 h, superior to our previous report. The synergy of the surface plasmon resonance (SPR) effect of Bi0 and ternary heterojunction accelerated the separation and transfer of photo-induced charge carrier and thus heavily promoted the removal efficiency. Moreover, the excellent stability of this photoanode was hold with no considerably activity attenuation after 4 cycles. Finally, a dual Z-scheme charge transfer process was presented. This work offers an attractive pathway to construct highly active photoelectrode with promising application for simultaneous remediation of organics and heavy metals in wastewater.
Collapse
Affiliation(s)
- Hao Du
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Xin Ma
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Ningyi Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Lingxuan Yang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Guoxiang Yang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Qiang Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Qi Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou 310018, China.
| |
Collapse
|
5
|
Tan T, Wang X, Zhou X, Ma H, Fang R, Geng Q, Dong F. Highly active Cs 2SnCl 6/C 3N 4 heterojunction photocatalysts operating via interfacial charge transfer mechanism. J Hazard Mater 2022; 439:129694. [PMID: 36104916 DOI: 10.1016/j.jhazmat.2022.129694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/19/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
In this study, a novel lead-free perovskite heterojunction Cs2SnCl6/C3N4 composite was constructed and applied for photocatalytic NO purification. After design optimization, the Cs2SnCl6/C3N4 heterojunction exhibit excellent and stable photocatalytic NO purification ability under visible-light irradiation, which is significantly better than pristine Cs2SnCl6 and C3N4. Combined in-situ DRIFTS and electron spin resonance spin-trapping, the mechanism of Cs2SnCl6/C3N4 photocatalytic NO removal was revealed. Under visible-light irradiation, the photo-generated electrons on the conduction band of C3N4 would spontaneously migrate to the CB of Cs2SnCl6, leaving holes (h+) on the valence band of C3N4, contributing to efficiently segregated charge carriers and improved photocatalytic NO purification. Density functional theory calculations also revealed the directional electron transfer at the C3N4 and Cs2SnCl6 interface, in which the charge was migrated from C3N4 to Cs2SnCl6 induced by the internal electric field. This research sheds fresh light on the fabrication of Cs2SnCl6/C3N4 heterojunctions as well as its effective interfacial charge separation.
Collapse
Affiliation(s)
- Tianqi Tan
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xuemei Wang
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xi Zhou
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Hao Ma
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Ruimei Fang
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Qin Geng
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China.
| | - Fan Dong
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China; State Centre for International Cooperation on Designer Low-Carbon and Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.
| |
Collapse
|
6
|
Chu F, Yu M, Jiang H, Mu J, Li X. Increasing N active sites by in-situ growing conformal C 3N 4 layer in hierarchical porous carbon-based networks for fast Li + transfer and polysulfide anchoring in lithium-sulfur batteries. J Colloid Interface Sci 2022; 627:838-47. [PMID: 35901563 DOI: 10.1016/j.jcis.2022.07.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/16/2022] [Accepted: 07/19/2022] [Indexed: 10/17/2022]
Abstract
Various challenges remain to be overcome in lithium-sulfur (Li-S) batteries, including the volume expansion and low conductivity of sulfur, the shuttle effect of lithium polysulfides and the sluggish redox reaction in the cell. Herein, we propose a multilayered conductive framework by the in situ growth of a conformal graphene-like C3N4 (GCN) coating on porous CNT@NC networks with carbon nanotubes (CNTs) as the core and N-doped carbon (NC) as the crosslinking shell. The abundant N in the GCN coating increased the surface N concentration of the framework from 14.38% to 18.77%, which enriched the active sites in the frameworks for the adsorption and catalysis conversion of LiPSs and Li2S with a low energy barrier. Furthermore, the scalable frameworks can provide an 85% porosity for a sufficient reaction interface and accommodate the volume expansion of sulfur. The synergistic effect between GCN and the highly conductive hierarchical structure can accelerate the transport of Li+ and electrons as well as the diffusion of electrolyte. Benefitting from the above advantages, the Al-free CNT@NC@GCN electrode exhibits a reversible capacity of 647.6 mAh g-1 after cycling for 450 cycles at 1C with a low capacity fading rate of 0.09% per cycle. This proposed facile strategy creates inspiring insights into the design of novel cathode materials for Li-S batteries.
Collapse
|
7
|
Li J, Mei Y, Ma S, Yang Q, Jiang B, Xin B, Yao T, Wu J. Internal-electric-field induced high efficient type-I heterojunction in photocatalysis-self-Fenton reaction: Enhanced H 2O 2 yield, utilization efficiency and degradation performance. J Colloid Interface Sci 2021; 608:2075-2087. [PMID: 34749154 DOI: 10.1016/j.jcis.2021.10.119] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 11/19/2022]
Abstract
Herein, a type-I phosphorus-doped carbon nitride/oxygen-doped carbon nitride (P-C3N4/O-C3N4) heterojunction was designed for photocatalysis-self-Fenton reaction (photocatalytic H2O2 production and following Fenton reaction). In P-C3N4/O-C3N4, the photoinduced charge carriers were effectively separated with the help of internal-electric-field near the interface, ensuring the high catalytic performance. As a result, the production rate of H2O2 in an air-saturated solution was 179 μM·h-1, about 7.2, 2.5, 2.5 and 2.1 times quicker than that on C3N4, P-C3N4, O-C3N4, and phosphorus and oxygen co-doped C3N4, respectively. By taking advantage of the cascade mode in photocatalysis-self-Fenton reaction, H2O2 utilization efficiency was remarkably improved to 77.7%, about 9.0 times higher than that of traditional homogeneous Fenton reaction. Befitting from the superior yield and utilization efficiency, the degradation performance of P-C3N4/O-C3N4 was undoubtedly superior than other photocatalysts. This work well addressed two bottlenecks in traditional Fenton reaction: source of H2O2 and their low utilization efficiency, and the findings were beneficial to understand the mechanism and advantage of the photocatalysis-self-Fenton system in environmental remediation.
Collapse
Affiliation(s)
- Jiaqi Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Yuqing Mei
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Shouchun Ma
- State Key Lab Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Qingfeng Yang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, China
| | - Baojiang Jiang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China
| | - Baifu Xin
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China.
| | - Tongjie Yao
- State Key Lab Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China.
| | - Jie Wu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, China.
| |
Collapse
|
8
|
Sun X, Zhang L, Chen R, Liu J, Yu J, Zhu J, Liu P, Wang J, Liu Q. Constructing three-dimensional network C, O Co-doped nitrogen-deficient carbon nitride regulated by acrylic fluoroboron overall marine antifouling. J Colloid Interface Sci 2021; 608:1802-1812. [PMID: 34742089 DOI: 10.1016/j.jcis.2021.10.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 10/02/2021] [Accepted: 10/10/2021] [Indexed: 10/20/2022]
Abstract
To deal with unwanted biofouling adsorption, which impacts the economy and the environment, significant research has been devoted to composite systems involving a photocatalyst combined with self-renewal resin to provide synergistic antifouling. Here, photocatalyst based on three-dimensional (3D) network of carbon-oxygen-doped nitrogen-deficient carbon nitride and acrylic fluoroboron polymer as a system was successfully synthesized. 3D networks carbon nitride with carbon-oxygen dopants and nitrogen defects were prepared as skeletons, which effectively support and regulate the hydrolysis rate of the polymer. These composite systems exhibits excellent diatom anti-adhesion performance and high antibacterial rates for Escherichia coli and Staphylococcus aureus of up to 91.87% and 88.52%, respectively. In addition, self-cleaning function of the composite system are proved by and higher efficiency of chemical oxygen demand (COD) removal owing to efficient charge-carrier separation and transfer within the 3D network carbon nitride network. The great potential applications of this strategy demonstrated in marine engineering in the future.
Collapse
Affiliation(s)
- Xiaonan Sun
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Linlin Zhang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Rongrong Chen
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; Hainan Harbin Institute of Technology Innovation Research Institute Co., Ltd, Hainan 572427, China.
| | - Jingyuan Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jing Yu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jiahui Zhu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Peili Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jun Wang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Qi Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; Hainan Harbin Institute of Technology Innovation Research Institute Co., Ltd, Hainan 572427, China.
| |
Collapse
|
9
|
Feng Y, Shen M, Xie Z, Chen P, Zuo LZ, Yao K, Lv W, Liu G. Photochemical transformation of C 3N 4 under UV irradiation: Implications for environmental fate and photocatalytic activity. J Hazard Mater 2020; 394:122557. [PMID: 32272327 DOI: 10.1016/j.jhazmat.2020.122557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 06/11/2023]
Abstract
In this study, the photo-transformations of bulk C3N4 (CN) and oxidized C3N4 (OCN) under UV-irradiation were examined. Through NO3- release measurements, we found that the photo-transformation rate of OCN is higher than that of CN. Various characterization results revealed the structural and chemical properties changes of CN and OCN after photo-transformation. We proposed that under reactive oxygen species attack, CN and OCN were gradually broken into smaller fragments and finally mineralized into NO3-, CO2, and H2O through the circular reactions of deamination-hydroxylation-decarboxylation. Through the zeta potential measurements and sedimentation experiments, the influence of photo-transformation on the water stabilities of CN and OCN were assessed. The stability of CN in water increased while the water stability of OCN decreased after photo-transformation, implying that the changes to C3N4-based materials caused by photo-transformation may significantly impact their environmental behaviors. Moreover, the photocatalytic activities of the photo-transformed OCN and CN substantially decreased, indicating that the structural changes might be the main reason for their photocatalytic activity loss. These findings highlight the non-negligible influence of photo-transformation on the fate of C3N4 in aquatic environments, as well as on the photochemical stability during its use.
Collapse
Affiliation(s)
- Yiping Feng
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Mengyao Shen
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhijie Xie
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Ping Chen
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Lin-Zi Zuo
- Analysis and Test Center, Guangdong University of Technology, Guangzhou 510006, China
| | - Kun Yao
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Wenying Lv
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Guoguang Liu
- Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| |
Collapse
|
10
|
Xu J, Dai G, Chen B, He D, Situ Y, Huang H. Construction of Ti 3+-TiO 2-C 3N 4por compound coupling photocatalysis and Fenton-like process: Self-driven Fenton-like process without extra H 2O 2 addition. Chemosphere 2020; 241:125022. [PMID: 31627106 DOI: 10.1016/j.chemosphere.2019.125022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/26/2019] [Accepted: 09/30/2019] [Indexed: 05/25/2023]
Abstract
An efficient heterogeneous photocatalytic process coupling photocatalysis and Fenton-like process was carried out, where the Fenton-like cycle could be driven by self-produced H2O2 rather than extra H2O2 addition. It was revealed that C3N4por exhibited good performance at H2O2 production in pure water, which was enhanced up to eight times than bare g-C3N4. Fenton-like cycle was constructed in Ti3+-TiO2-C3N4por as C3N4por severed as H2O2 donator, while the Ti3+-TiO2 was able to provide photoinduced electrons for the Fenton-like process, resulting in the generation of much more OH radical. In addition, ESR spectra were performed to confirm the promotion of the Fenton-like cycle and much more OH radical was detected in Ti3+-TiO2-C3N4por than Ti3+-TiO2-C3N4 due to the great improvement in H2O2 production of C3N4por. What's more, the feasible photocatalytic mechanism of Ti3+-TiO2-C3N4por composite was also proposed.
Collapse
Affiliation(s)
- Jiajie Xu
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, PR China
| | - Guodong Dai
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, PR China
| | - Biyu Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, PR China
| | - Donglin He
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, PR China
| | - Yue Situ
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, PR China
| | - Hong Huang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, PR China.
| |
Collapse
|
11
|
Song B, Wang Q, Wang L, Lin J, Wei X, Murugadoss V, Wu S, Guo Z, Ding T, Wei S. Carbon nitride nanoplatelet photocatalysts heterostructured with B-doped carbon nanodots for enhanced photodegradation of organic pollutants. J Colloid Interface Sci 2019; 559:124-133. [PMID: 31614317 DOI: 10.1016/j.jcis.2019.10.015] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/29/2019] [Accepted: 10/05/2019] [Indexed: 10/25/2022]
Abstract
Decorating electron-accepting materials on carbon nitride (C3N4) is a promising strategy to construct heterostructure catalysts for improved photocatalytic abilities. In this study, B-doped carbon-dots (B-C-dots) decorated C3N4 (C3N4/B-C-dots) catalysts were fabricated through the surface deposition. The benefits from integration of B-C-dots and C3N4 are four folds: (i) increasing surface area; (ii) improving visible light absorption; (iii) promoting the transfer of photoinduced carriers; and (iv) reducing the recombination of photoinduced carriers. The optimum photocatalytic activity of B-C-dots/C3N4 for Rhodamine B (Rh B) (or tetracycline hydrochloride (TC)) degradation was about 7.21 (6.56) and 4.80 (4.35) times higher than that of C3N4 and C-dots/C3N4, respectively, exhibiting both remarkable stability and repeatability. Moreover, enhanced photocatalytic activity of C3N4/B-C-dots could also be attributed to the type-II heterojunction formed between C3N4 and B-C-dots caused by B doping.
Collapse
Affiliation(s)
- Bo Song
- Marine College, Shandong University, Weihai 26429, China.
| | - Qiao Wang
- Marine College, Shandong University, Weihai 26429, China
| | - Li Wang
- School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai 264209, China
| | - Jing Lin
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
| | - Xin Wei
- Department of Chemistry & Biochemistry, Lamar University, Beaumont, TX 77710, USA
| | - Vignesh Murugadoss
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China; Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China; Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
| | - Shide Wu
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou 450001, China
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA.
| | - Tao Ding
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
| | - Suying Wei
- Department of Chemistry & Biochemistry, Lamar University, Beaumont, TX 77710, USA.
| |
Collapse
|
12
|
Wang J, Yang B, Li S, Yan B, Xu H, Zhang K, Shi Y, Zhai C, Du Y. Enhanced photo-electrochemical response of reduced graphene oxide and C 3N 4 nanosheets for rutin detection. J Colloid Interface Sci 2017; 506:329-337. [PMID: 28743028 DOI: 10.1016/j.jcis.2017.07.059] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/11/2017] [Accepted: 07/16/2017] [Indexed: 12/11/2022]
Abstract
Herein, a sensitive photo-electrochemical sensor based on C3N4 and reduced graphene oxide nanosheets modified glassy carbon electrode (C3N4-RGO/GCE) has been fabricated for the detection of rutin under UV light illumination. In C3N4-RGO catalyst, RGO not only works as a template but also promotes electron transfer, meanwhile, C3N4 acts as a photocatalyst. Benefiting from the superior electron transfer capacity and efficient UV light effect of the C3N4-RGO catalyst, we get a photo-electrochemical sensor for the rutin detecting with a low detection limit of 1.78×10-9molL-1 and an excellent linear range of 5×10-9-1.4×10-4molL-1. Meanwhile, the achieved C3N4-RGO/GCE demonstrated nice selectivity, good reproducibility as well as reliable stability. Moreover, compared with the electrochemical determination, the C3N4-RGO electrode provides a new way for rutin detection by photo-electrochemical method with a promising UV light responsive result.
Collapse
Affiliation(s)
- Jin Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Beibei Yang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Shumin Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Bo Yan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Hui Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Ke Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Yuting Shi
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Chunyang Zhai
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, PR China
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
| |
Collapse
|
13
|
Ouyang K, Dai K, Chen H, Huang Q, Gao C, Cai P. Metal-free inactivation of E. coli O157:H7 by fullerene/C 3N 4 hybrid under visible light irradiation. Ecotoxicol Environ Saf 2017; 136:40-45. [PMID: 27810579 DOI: 10.1016/j.ecoenv.2016.10.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 05/21/2023]
Abstract
Interest has grown in developing safe and high-performance photocatalysts based on metal-free materials for disinfection of bacterial pathogens under visible light irradiation. In this paper, the C60/C3N4 and C70/C3N4 hybrids were synthesized by a hydrothermal method, and characterized by X-ray diffraction (XRD), UV-vis diffuse reflection spectroscopy (UV-vis DRS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and high revolution transmission electron microscope (HRTEM). The performance of photocatalytic disinfection was investigated by the inactivation of Escherichia coli O157:H7. Both C60/C3N4 and C70/C3N4 hybrids showed similar crystalline structure and morphology with C3N4; however, the two composites exhibited stronger bacterial inactivation than C3N4. In particular, C70/C3N4 showed the highest bactericidal efficiency and was detrimental to all E. coli O157:H7 in 4h irradiation. Compared to C3N4, the enhancement of photocatalytic activity of composites could be attributed to the effective transfer of the photoinduced electrons under visible light irradiation. Owing to the excellent performance of fullerenes (C60, C70)/C3N4 composites, a visible light response and environmental friendly photocatalysts for disinfection were achieved.
Collapse
Affiliation(s)
- Kai Ouyang
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Ke Dai
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Hao Chen
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiaoyun Huang
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Chunhui Gao
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Peng Cai
- State Key Laboratory of Agricultural Microbiology, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
| |
Collapse
|