1
|
Liu Z, Qian W, Chen M, Zhou W, Song B, Zhang B, Bao X, Tang Q, Liu Y, Zhang C. Electrocatalytic oxidation of gaseous toluene in an all-solid cell using a foam Ti/Sb-SnO 2/β-PbO 2 anode. J Environ Sci (China) 2023; 134:77-85. [PMID: 37673535 DOI: 10.1016/j.jes.2022.10.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/23/2022] [Accepted: 10/23/2022] [Indexed: 09/08/2023]
Abstract
Mineralization of benzene, toluene, and xylene (BTX) with high efficiency at room temperature is still a challenge for the purification of indoor air. In this work, a foam Ti/Sb-SnO2/β-PbO2 anode catalyst was prepared for electrocatalytically oxidizing gaseous toluene in an all-solid cell at ambient temperature. The complex Ti/Sb-SnO2/β-PbO2 anode, which was prepared by sequentially deposing Sb-SnO2 and β-PbO2 on a foam Ti substrate, shows high electrocatalytic oxidation efficiency of toluene (80%) at 7 hr of reaction and high CO2 selectivity (94.9%) under an optimized condition, i.e., a cell voltage of 2.0 V, relative humidity of 60% and a flow rate of 100 mL/min. The better catalytic performance can be ascribed to the high production rate of ⋅OH radicals from discharging adsorbed water and the inhibition of oxygen evolution on the surface of foam Ti/Sb-SnO2/β-PbO2 anode when compared with the foam Ti/Sb-SnO2 anode. Our results demonstrate that prepared complex electrodes can be potentially used for electrocatalytic removal of gaseous toluene at room temperature with a good performance.
Collapse
Affiliation(s)
- Zhikun Liu
- Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Weiming Qian
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Min Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wenshuo Zhou
- Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Boying Song
- Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Bo Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xiaolei Bao
- Hebei Technological Innovation Center for Volatile Organic Compounds Detection and Treatment in Chemical Industry, Department of quality inspection and management, Hebei Chemical and Pharmaceutical College, Shijiazhuang 050026, China
| | - Qiong Tang
- College of Energy materials and Chemicals, Leshan Normal University, Leshan 614000, China
| | - Yongchun Liu
- Aerosol and Haze Laboratory, Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Changbin Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| |
Collapse
|
2
|
Quan F, Wu B, Guo Y, Zhang X, Shen W, Jia F, Liu X, Ai Z, Zhang L. Electrochemical removal of gaseous benzene using a flow-through reactor with efficient and ultra-stable titanium suboxide/titanium-foam anode at ambient temperature. J Colloid Interface Sci 2023; 645:533-541. [PMID: 37163799 DOI: 10.1016/j.jcis.2023.04.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/26/2023] [Accepted: 04/28/2023] [Indexed: 05/12/2023]
Abstract
Catalytic oxidation technology is currently considered as a feasible approach to degrade and mineralize volatile organic compounds (VOCs). However, it is still challenging to realize efficient removal of VOCs through catalytic oxidation at room temperature. In our study, a novel flow-through electrocatalytic reactor was designed, composed of porous solid-electrolyte, gas-permeable titanium sub-oxides/titanium-foam (TiSO/Ti-foam) as anode and platinum coated titanium foam (Pt/Ti-foam) as cathode. This device could oxidize nearly 100% of benzene (10 ppm) to carbon dioxide at a current density of 1.2 mA/cm2 under room temperature. More importantly, the device maintained excellent stability over 1000 h. Mechanism of benzene mineralization was discussed. Hydroxyl radicals generated on the TiSO/Ti-foam anode played a crucial role in the oxidation of benzene. This study provides a promising prototype of the electrochemical air purifier, and may find its application in domestic and industrial air pollution control.
Collapse
Affiliation(s)
- Fengjiao Quan
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China; College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Bin Wu
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Yuxiao Guo
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Xu Zhang
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Wenjuan Shen
- College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Falong Jia
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China.
| | - Xiao Liu
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China.
| | - Zhihui Ai
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Lizhi Zhang
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| |
Collapse
|
3
|
Man S, Zeng X, Yin Z, Yang H, Bao H, Xu K, Wang L, Ge X, Mo Z, Yang W, Li X. Preparation of a novel Ce and Sb co-doped SnO2 nanoflowers electrode by a two-step (hydrothermal and thermal decomposition) method for organic pollutants electrochemical degradation. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
4
|
Escalona-Durán F, Muñoz-Morales M, Fernández-Marchante C, Lobato J, Martínez-Huitle C, Rodrigo M. Modelling electro-scrubbers for removal of VOCs. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
5
|
Srivastava V, Zare EN, Makvandi P, Zheng XQ, Iftekhar S, Wu A, Padil VVT, Mokhtari B, Varma RS, Tay FR, Sillanpaa M. Cytotoxic aquatic pollutants and their removal by nanocomposite-based sorbents. CHEMOSPHERE 2020; 258:127324. [PMID: 32544812 DOI: 10.1016/j.chemosphere.2020.127324] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/29/2020] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
Water is an extremely essential compound for human life and, hence, accessing drinking water is very important all over the world. Nowadays, due to the urbanization and industrialization, several noxious pollutants are discharged into water. Water pollution by various cytotoxic contaminants, e.g. heavy metal ions, drugs, pesticides, dyes, residues a drastic public health issue for human beings; hence, this topic has been receiving much attention for the specific approaches and technologies to remove hazardous contaminants from water and wastewater. In the current review, the cytotoxicity of different sorts of aquatic pollutants for mammalian is presented. In addition, we will overview the recent advances in various nanocomposite-based adsorbents and different approaches of pollutants removal from water/wastewater with several examples to provide a backdrop for future research.
Collapse
Affiliation(s)
- Varsha Srivastava
- Department of Chemistry, Indian Institute of Technology, Banaras Hindu University (B.H.U), Varasani 221005, India
| | | | - Pooyan Makvandi
- Institute for Polymers, Composites and Biomaterials, National Research Council, IPCB-CNR, Naples, Italy; Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz 6153753843, Iran; Department of Medical Nanotechnology, Faculty of Advanced, Technologies in Medicine, Iran University of Medical Sciences, Tehran 14496-14535, Iran
| | - Xuan-Qi Zheng
- Department of Orthopaedics, Bioprinting Research Group, Zhejiang Provincial Key Laboratory of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Sidra Iftekhar
- Department of Environmental Engineering, University of Engineering and Technology Taxila, Taxila 47050, Pakistan
| | - Aimin Wu
- Department of Orthopaedics, Bioprinting Research Group, Zhejiang Provincial Key Laboratory of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Vinod V T Padil
- Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 46117 Liberec 1, Czech Republic
| | - Babak Mokhtari
- Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz 6153753843, Iran
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Palacký University in Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Franklin R Tay
- College of Graduate Studies, Augusta University, Augusta, GA, USA
| | - Mika Sillanpaa
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam; Faculty of Environment and Chemical Engineering, Duy Tan University, Da Nang 550000, Viet Nam; School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, 4350 QLD, Australia; Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein 2028, South Africa.
| |
Collapse
|
6
|
Sun Y, Cheng S, Li L, Yu Z, Mao Z, Huang H. Facile sealing treatment with stannous citrate complex to enhance performance of electrodeposited Ti/SnO 2-Sb electrode. CHEMOSPHERE 2020; 255:126973. [PMID: 32402889 DOI: 10.1016/j.chemosphere.2020.126973] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/01/2020] [Accepted: 05/02/2020] [Indexed: 06/11/2023]
Abstract
Ti/SnO2-Sb is a promising anode for electrochemical advanced oxidation process with advantages of low cost and no secondary pollution, while suffers from low work economy due to the short service life. In this study, a facile strategy was proposed to fabricate Ti/SnO2-Sb electrode with high oxidation ability and long service life based on novelly sealing electrodeposited Sn-Sb coating with stannous citrate complex. The treated Ti/SnO2-Sb electrode exhibited an accelerated service life of 41.5 h (100 mA cm-2; 0.5 M H2SO4) and a degradation rate constant for methylene blue dye of 1.02 h-1 which were respectively 11.9 and 2.5 times as that of the untreated electrode. It was found out that the complex could well repair the coating defects inside or outside and form a covering film to tighten the coating, and was then mineralized during the following calcination process to achieve a uniform, rough and highly active SnO2-Sb catalytic layer. The distinctive structure was confirmed by XRD, SEM, XPS and FT-IR. The sealing treatment could be achieved by in situ electrodepositing Sn-Sb coating from or ex situ dipping Sn-Sb coating in solution containing stannous citrate complex followed by drying in air. This study provided a novel, facile and effective strategy to enhance performance of Ti/SnO2-Sb electrode that could be easily achieved in both laboratory and industrial scales and combined with other strategies.
Collapse
Affiliation(s)
- Yi Sun
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Shaoan Cheng
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China.
| | - Longxin Li
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Zhen Yu
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Zhengzhong Mao
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Haobin Huang
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
| |
Collapse
|
7
|
Lei J, Duan P, Liu W, Sun Z, Hu X. Degradation of aqueous cefotaxime in electro-oxidation - electro-Fenton -persulfate system with Ti/CNT/SnO 2-Sb-Er anode and Ni@NCNT cathode. CHEMOSPHERE 2020; 250:126163. [PMID: 32109696 DOI: 10.1016/j.chemosphere.2020.126163] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 02/05/2020] [Accepted: 02/08/2020] [Indexed: 06/10/2023]
Abstract
Due to the potential threatening of antibiotics in aqueous environment, a novel electro-oxidation (EO) - electro-Fenton (EF) -persulfate (PS) system with the addition of peroxydisulfate and Fe2+ was installed for the degradation of cefotaxime. Ti/CNT/SnO2-Sb-Er with an ultra-high oxygen evolution potential (2.15 V) and enhanced electrocatalytic surface area was adopted as anode. The OH production and electrode stability test demonstrated great improvement in the electrochemical performances. Ni@NCNT cathode was tested with higher H2O2 generation by the presence of nitrogen functionalities due to the acceleration of electron transfer of O2 reduction. Experiment results indicated CNT and ErO2 modification increased the molecular and TOC removal of cefotaxime. Coupling processes of EO-EF and EO-PS both resulted in shorter electrolysis time for complete cefotaxime removal, however, the mineralization ability of EO-PS process was lower than EO-EF, which might result from the immediate vanishing of PS. Thus, a further improved treatment EO-EF-PS system achieved an 81.6% TOC removal towards 50 mg L-1 cefotaxime after 4 h electrolysis, under the optimal working condition Fe2+ = PS = 1 mM. The influence of current density and initial concentration on the performance of all processes was assessed. Methanol and tert-butanol were added in the system as OH and SO4- scavengers, which illustrating the mechanism of EO-EF-PS oxidizing process was the result of the two free radicals. Major intermediates were deduced and the degradation pathway of cefotaxime was analyzed. This research provides a potential coupling process with high antibiotic removal efficiency and effective materials for practical uses.
Collapse
Affiliation(s)
- Jiawei Lei
- Research Group of Water Pollution Control and Water Reclamation, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Pingzhou Duan
- Research Group of Water Pollution Control and Water Reclamation, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Weijun Liu
- Shanxi Jinhuankeyuan Environmental Resources Technology Co., Ltd, Taiyuan, Shanxi, 030024, PR China
| | - Zhirong Sun
- College of Environmental & Energy Engineering, Beijing University of Technology, Beijing, 100124, PR China
| | - Xiang Hu
- Research Group of Water Pollution Control and Water Reclamation, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China.
| |
Collapse
|