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Influence of environmental temperature and relative humidity on photocatalytic oxidation of toluene on

GUO Ting, BAI Zhipeng, WU Can, ZHU Tan

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 224-229 doi: 10.1007/s11783-008-0039-3

Abstract: environmental temperature (T) and relative humidity (RH) on the gas-solid adsorption of toluene and the photocatalyticoxidation (PCO) efficiency of adsorbed toluene on TiO/ACF were studied, and then, the purification capability

Keywords： application     gas-solid adsorption     technique     TiO/ACF     experimental    

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Defective Nickle–Iron Layered Double Hydroxide for Enhanced Photocatalytic NO Oxidation with Significant

Xiaoyu Li,Xiaoshu Lv,Jian Pan,Peng Chen,Huihui Peng,Yan Jiang,Haifeng Gong,Guangming Jiang,Li'an Hou,

Engineering doi: 10.1016/j.eng.2023.06.017

Abstract: Photocatalysis offers a sustainable avenue for the oxidative removal of low concentrations of NOx from the atmosphere. Layered double hydroxides (LDHs) are promising candidate photocatalysts owing to their unique layered and tunable chemical structures, and the abundant hydroxide (OH−) moieties on their surfaces that are hydroxyl radical (•OH) precursors. However, inferior charge separation and limited active sites on an LDH hinder its practical applications. Herein, we developed a facile N2H4-driven etching (et) approach that introduces dual Ni2+ and OH− vacancies (Niv and OHv) into NiFe-LDH nanosheets (referred to as NiFe-LDH-et) that facilitate improved charge-carrier separation and the formation of active Lewis acidic sites (Fe3+ and Ni2+ exposed at OHv). In contrast to inert pristine LDH, NiFe-LDH-et actively removes NO when illuminated with visible light. Specifically, Ni76Fe24-LDH-et etched in 1.50 mmol·L−1 N2H4 solution removes 32.8% of the NO from continuously flowing air (NO-feed concentration: ∼500 parts per billion (ppb)) when illuminated with visible light, thereby outperforming most reported catalysts. Experimental and theoretical data reveal that the dual vacancies promote the production of reactive oxygen species (•O2− and •OH) and the adsorption of NO on the LDH. In-situ spectroscopy revealed that NO is preferentially adsorbed at Lewis acidic sites, particularly exposed Fe3+ sites, and then converted into NO+ that is subsequently oxidized to NO3− without the formation of any of the more toxic NO2 intermediate, thereby alleviating risks associated with its production and emission.

Keywords： Vacancies     Layered double hydroxide     NO     +     Photocatalysis     NO removal    

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An electrochemical process that uses an Fe

Chaojie Jiang, Lifen Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0860-z

Abstract: A bio-electrochemical fuel cell reactor with cathodic Fe /TiO generates electricity. It destroys recalcitrant pollutants in cathode chamber without photocatalysis. Fe /TiO generates reactive oxygenated species in the dark or under photocatalysis. Cathodic produced ROS (hydroxy radical/superoxide radical) can degrade tetracycline or dyes. Electricity generation is enhanced by semiconductor catalyzed cathodic degradation of pollutants. In this study, a new water treatment system that couples (photo-) electrochemical catalysis (PEC or EC) in a microbial fuel cell (MFC) was configured using a stainless-steel (SS) cathode coated with Fe /TiO . We examined the destruction of methylene blue (MB) and tetracycline. Fe /TiO was prepared using a chemical reduction-deposition method and coated onto an SS wire mesh (500 mesh) using a sol technique. The anode generates electricity using microbes (bio-anode). Connected via wire and ohmic resistance, the system requires a short reaction time and operates at a low cost by effectively removing 94% MB (initial concentration 20 mg·L ) and 83% TOC/TOC under visible light illumination (50 W; 1.99 mW·cm for 120 min, MFC-PEC). The removal was similar even without light irradiation (MFC-EC). The of the MFC-PEC system was approximately 0.675 kWh·m ·order , whereas that of the MFC-EC system was zero. The system was able to remove 70% COD in tetracycline solution (initial tetracycline concentration 100 mg·L ) after 120 min of visible light illumination; without light, the removal was 15% lower. The destruction of MB and tetracycline in both traditional photocatalysis and photoelectrocatalysis systems was notably low. The electron spin-resonance spectroscopy (ESR) study demonstrated that ·OH was formed under visible light, and ·O was formed without light. The bio-electricity-activated O and ROS (reactive oxidizing species) generation by Fe /TiO effectively degraded the pollutants. This cathodic degradation improved the electricity generation by accepting and consuming more electrons from the bio-anode.

Keywords： Bio-anode     Photocatalytic cathode     Fe0/TiO2     ESR     Dye and antibiotics     Advanced oxidation    

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A New Airliner Cabin Air Quality Control System Based on Nanophotocatalytic Oxidation

Ning Xianwen,Li Yunze,Wang Jun

Strategic Study of CAE 2006, Volume 8, Issue 4,   Pages 60-62

Abstract: Considering the unique cabin environment, a new cabin air purifier system based on nanophotocatalytic oxidationA detailed performance comparison has been made between the photocatalytic oxidation reactor and thecarbon adsorption/high efficiency particulate arresting filters are significantly higher than that for photocatalyticoxidation reactor.It also indicates that photocatalytic oxidation reactor can not only control the level of volatile organic

Keywords： airliner cabin     photocatalytic oxidation     air purification     volatile organic compounds     activated carbon    

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preparation of Ag@AgCl/Bio-veins composites and their photocatalytic activity and recyclability

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 906-917 doi: 10.1007/s11705-022-2273-9

Abstract: In this work, a facile strategy was proposed to enhance the photocatalytic activity and recovery performance

Keywords： Ag@AgCl     biological veins     photocatalytic activity     recyclability    

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Enhanced photocatalytic water splitting with surface defective SrTiO

Junying LIU, Zhidong WEI, Wenfeng SHANGGUAN

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 700-709 doi: 10.1007/s11708-021-0735-2

Abstract: enhanced due to surface oxygen vacancies or Ti sites (such as Ti and Ti ), which are beneficial to photocatalytic

Keywords： SrTiO3     surface reconstruction     oxygen vacancies     photocatalytic water splitting    

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Design and synthesis of ZnCoO/CdS for substantially improved photocatalytic hydrogen production

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 606-616 doi: 10.1007/s11705-022-2233-4

Abstract: According to the experimental results of photocatalytic hydrogen evolution, the final hydrogen evolutionZnCo2O4 expands the adsorption range of light and improves the performance of photocatalytic

Keywords： ZnCo2O4 nanosphere     CdS nanorods     photocatalytic hydrogen evolution    

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Theoretical study on flow and radiation in tubular solar photocatalytic reactor

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 687-699 doi: 10.1007/s11708-021-0773-9

Abstract: mixture flow model, an optimized six-flux model is first established and applied to the tubular solar photocatalytic

Keywords： photocatalytic hydrogen photoreactor     nume- rical simulation     solar energy     flow model     radiation model    

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Decoration of CdMoO micron polyhedron with Pt nanoparticle and their enhanced photocatalytic performance

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1949-1961 doi: 10.1007/s11705-023-2360-6

Abstract: This study aimed to prepare and apply a novel Pt/CdMoO4 composite photocatalyst for photocatalyticWhen exposed to simulated sunlight, the optimal Pt/CdMoO4 catalyst displayed a photocatalyticThese findings offer practical insights into designing and synthesizing efficient photocatalysts for photocatalytic

Keywords： photocatalytic N2 fixation     Pt/CdMoO4     tetracycline degradation     Schottky barrier    

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growth of a-few-layered MoS on CdS nanorod for high efficient photocatalytic H production

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 752-759 doi: 10.1007/s11708-021-0779-3

Abstract: sub>2 was grown on CdS nanorod by a solid state method using sulfur powder as sulfur source for photocatalytic/sub> not only are beneficial for charge separation, but also works as active sites, thus enhancing photocatalyticCompared with pure CdS, the photocatalytic activity of MoS2 loaded CdS was significantly improvedThis work provides a new design for photocatalysts with high photocatalytic activities and provides adeeper understanding of the effect of MoS2 on enhancing photocatalytic activity.

Keywords： photocatalytic H2 production     CdS     MoS2 cocatalyst     charge separation    

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grown TiN/N-TiO composite for enhanced photocatalytic H evolution activity

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 721-731 doi: 10.1007/s11708-021-0766-8

Abstract: To explore the underlying photocatalytic mechanism, the crystal phase, morphology, light absorption,

Keywords： photocatalytic H2 evolution     TiN/N-TiO2 composite     plasmonic effect     in-situ    

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Synthesis of TiO2 nano-particles and their photocatalytic activity for formaldehyde and methyl orange

XIAO Xinyan, ZHANG Huiping, CHEN Huanqin, LIAO Dongliang

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 178-183 doi: 10.1007/s11705-007-0033-5

Abstract: Their photocatalytic activities for formaldehyde (FA) and methyl orange (MO) degradation were testedResults showed that particle sizes were in the range of 10 40 nm, and that prepared TiO had better photocatalyticA simplified model was developed to evaluate the apparent quantum efficiency (Φapp) of this photocatalytic

Keywords： prepared     photocatalytic activity     apparent     photocatalytic     orthogonal    

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Synthesis of novel magneto-hybrid polyoxometalate composite membrane with simultaneous photocatalytic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1450-1459 doi: 10.1007/s11705-023-2310-3

Abstract: shown that the apparent impacts of this novel magneto-HPOM-PES membrane on the hydrophilic behavior and photocatalytic

Keywords： magneto-hybrid polyoxometalate nanocomposite     composite membrane     antifouling     self-cleaning     magnetic and photocatalytic    

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Crystal design of bismuth oxyiodide with highly exposed (110) facets on curved carbon nitride for the photocatalytic

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1125-1138 doi: 10.1007/s11705-021-2116-0

Abstract: a high-exposure (110) facet and abundant oxygen vacancies were successfully designed to enhance the photocatalyticOxytetracycline (OTC) and methyl blue dyes were used as targets for pollutant degradation, and 85.6% and 96.5% photocatalytic

Keywords： high-exposure (110) facet     oxygen vacancy-rich     BiOI-110/DCN heterojunction     photocatalytic degradation    

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Recent advances of hydrogen production through particulate semiconductor photocatalytic overall water

Frontiers in Energy 2022, Volume 16, Issue 1,   Pages 49-63 doi: 10.1007/s11708-022-0817-9

Abstract: Solar energy-driven photocatalytic water splitting has been investigated for decades to produce cleanthe cutting-edge research within the overall water splitting system is summarized from the one-step photocatalyticIn addition, the photocatalytic reaction engineering study is also reviewed which is crucial for future

Keywords： photocatalysis     overall water splitting     hydrogen    

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Title Author Date Type Operation

Influence of environmental temperature and relative humidity on photocatalytic oxidation of toluene on

GUO Ting, BAI Zhipeng, WU Can, ZHU Tan

Journal Article

Defective Nickle–Iron Layered Double Hydroxide for Enhanced Photocatalytic NO Oxidation with Significant

Xiaoyu Li,Xiaoshu Lv,Jian Pan,Peng Chen,Huihui Peng,Yan Jiang,Haifeng Gong,Guangming Jiang,Li'an Hou,

Journal Article

An electrochemical process that uses an Fe

Chaojie Jiang, Lifen Liu, John C. Crittenden

Journal Article

A New Airliner Cabin Air Quality Control System Based on Nanophotocatalytic Oxidation

Ning Xianwen,Li Yunze,Wang Jun

Journal Article

preparation of Ag@AgCl/Bio-veins composites and their photocatalytic activity and recyclability

Journal Article

Enhanced photocatalytic water splitting with surface defective SrTiO

Junying LIU, Zhidong WEI, Wenfeng SHANGGUAN

Journal Article

Design and synthesis of ZnCoO/CdS for substantially improved photocatalytic hydrogen production

Journal Article

Theoretical study on flow and radiation in tubular solar photocatalytic reactor

Journal Article

Decoration of CdMoO micron polyhedron with Pt nanoparticle and their enhanced photocatalytic performance

Journal Article

growth of a-few-layered MoS on CdS nanorod for high efficient photocatalytic H production

Journal Article

grown TiN/N-TiO composite for enhanced photocatalytic H evolution activity

Journal Article

Synthesis of TiO2 nano-particles and their photocatalytic activity for formaldehyde and methyl orange

XIAO Xinyan, ZHANG Huiping, CHEN Huanqin, LIAO Dongliang

Journal Article

Synthesis of novel magneto-hybrid polyoxometalate composite membrane with simultaneous photocatalytic

Journal Article

Crystal design of bismuth oxyiodide with highly exposed (110) facets on curved carbon nitride for the photocatalytic

Journal Article

Recent advances of hydrogen production through particulate semiconductor photocatalytic overall water

Journal Article