Inorganic Chemicals Industry >

2024 , Vol. 56 >Issue 10: 141 - 150

DOI: https://doi.org/10.19964/j.issn.1006-4990.2024-0104

Catalytic Materials

Study on surface regulation of sodium ferric silicate photocatalyst and its enhanced Cr（Ⅵ） photoreduction properties

  • YAN Yu ,
  • ZHOU Wenyuan ,
  • YANG Yunfei ,
  • WU Junshu ,
  • WANG Jinshu ,
  • SUN Lingmin
Expand
  • Beijing University of Technology，Beijing 100124，China

Received date: 2024-02-28

  Online published: 2024-03-27

Fold

Abstract

Silicate⁃based catalysts have become the focus of current research because of their green，low⁃cost and stable characteristics.Sodium ferric silicate（NaFeSi2O6，SFS） is a chain silicate with simple composition and ability to absorb visible light，which has attracted people's attention.Firstly，the original SFS powder was synthesized by hydrothermal method，and then the microstructure and Fe（Ⅲ）/Fe（Ⅱ） ratio of the SFS surface were regulated by thermal reduction process to prepare the optimal modified SFS for Cr（Ⅵ） reduction.It was found that after thermal reduction at 200 ℃，the specific surface area of SFS-200 was increased by 43%，the pore volume was increased to 0.081 cm3/g，and the proportion of Fe（Ⅱ） was increased from 33% to 45%，significantly improving its catalytic reduction activity towards Cr（Ⅵ）.Meanwhile，the effects of SFS-200 catalyst dosage，reduction time，oxalic acid promoter dosage，Cr（Ⅵ） concentration，and other factors on catalytic performance were investigated.It was found that Fe（Ⅱ）-C2O4•- was the main active substance in the catalytic system，maintaining the chemical cycle of Fe（Ⅲ）-Fe（Ⅱ） to enhance the efficient photo reduction removal ability of Cr（Ⅵ） by SFS-200.This study provided an effective way to prepare high⁃performance sodium ferric silicate photocatalyst for Cr（Ⅵ） wastewater purification，which had great potential for application.

Key words： sodium ferric silicate; photocatalysis; Cr（Ⅵ）

Cite this article

YAN Yu , ZHOU Wenyuan , YANG Yunfei , WU Junshu , WANG Jinshu , SUN Lingmin . Study on surface regulation of sodium ferric silicate photocatalyst and its enhanced Cr（Ⅵ） photoreduction properties[J]. Inorganic Chemicals Industry, 2024 , 56(10) : 141 -150 . DOI: 10.19964/j.issn.1006-4990.2024-0104

References

1 LI Jiahao， XIA Chenggong， CHENG Rong，et al.Passivation of multiple heavy metals in lead?zinc tailings facilitated by straw biochar?loaded N-doped carbon aerogel nanoparticles：Mechanisms and microbial community evolution［J］.The Science of the Total Environment，2022，803：149866.
2 WU Bingdang， ZHANG Li， WEI Shijie，et al.Reduction of chromate with UV/diacetyl for the final effluent to be below the discharge limit［J］.Journal of Hazardous Materials，2020，389：121841.
3 ZHU Pengfei， WU Xiaolong， XIAO Xingyang，et al.Construction of Bi12O17Cl2/ZnO-CN Z-scheme photocatalyst with ZIF-8 as precursor to remove antibiotics and Cr（Ⅵ） under visible light：Optimization，mechanism and degradation path［J］.Journal of Alloys and Compounds，2023，966：171513.
4 CHEN Dongjie， CHENG Yanling， ZHOU Nan，et al.Photocatalytic degradation of organic pollutants using TiO2-based photocatalysts：A review［J］.Journal of Cleaner Production，2020，268：121725.
5 WANG Chen， LIU Haiyan， WANG Guifang，et al.Photocatalytic removal of metronidazole and Cr（Ⅵ） by a novel Zn3In2S6/Bi2O3 S-scheme heterojunction：Performance，mechanism insight and toxicity assessment［J］.Chemical Engineering Journal，2022，450：138167.
6 ZHAO Yitao， LI Le， ZUO Yuanjie，et al.Reduced graphene oxide supported ZnO/CdS heterojunction enhances photocatalytic remo?val efficiency of hexavalent chromium from aqueous solution［J］.Chemosphere，2022，286（Pt 3）：131738.
7 LI Kexin， HUANG Ziai， ZHU Suiyi，et al.Removal of Cr（Ⅵ） from water by a biochar?coupled g-C3N4 nanosheets composite and performance of a recycled photocatalyst in single and combined pollution systems［J］.Applied Catalysis B：Environmental，2019，243：386-396.
8 XU Meng， WU Junshu， WANG Jinshu，et al.The integration of triazine?based porous organic polymer with bio?waste poplar catkin as water?floatable photocatalyst［J］.Applied Surface Science，2022，581：152409.
9 SUN Lingmin， WU Junshu， WANG Jinshu，et al. In-situ constructing nanostructured magnesium ferrite on steel slag for Cr（Ⅵ） photoreduction［J］.Journal of Hazardous Materials，2022，422：126951.
10 SUN Jie， CAO Fengming， ZHANG Ling，et al.The low?cost and high?efficient photoreduction of Cr（Ⅵ） by oxalic acid synergized with the iron?loaded rice straw［J］.Journal of Molecular Liquids，2022，351：118552.
11 HE Heng， LI Yongli， WANG Jinshu，et al.Tunable Fe-deficiency modified sodium ferric silicate for improving photo?Fenton?like activity［J］.Chemical Engineering Journal，2022，450：138141.
12 WANG Longyang， ZHANG Kejie， QIAN Jianying，et al.S-schemeMOF-on-MOF heterojunctions for enhanced photo?Fenton Cr（Ⅵ）reduction and antibacterial effects［J］.Chemosphere，2023，344：140277.
13 WEN Jiaxin， FU Wenyang， DING Shihu，et al.Pyrogallic acid modified nanoscale zero?valent iron efficiently removed Cr（Ⅵ） by improving adsorption and electron selectivity［J］.Chemical Engineering Journal，2022，443：136510.
14 CHEN Yongjun， MA Rui， PU Xunchi，et al.The characterization of a novel magnetic biochar derived from sulfate?reducing sludge and its application for aqueous Cr（Ⅵ） removal through synergistic effects of adsorption and chemical reduction［J］.Chemosphere，2022，308（Pt 1）：136258.
15 YAN Yu， WU Junshu， WANG Jinshu，et al.Rationally engineering magadiite heavy metal adsorbent for p-nitrophenol hydrogenation reduction［J］.Applied Clay Science，2023，245：107143.
16 LI Shijie， WANG Chunchun， LIU Yanping，et al.S-scheme MIL-101（Fe） octahedrons modified Bi2WO6 microspheres for photocatalytic decontamination of Cr（Ⅵ） and tetracycline hydrochloride：Synergistic insights，reaction pathways，and toxicity analy?sis［J］.Chemical Engineering Journal，2023，455：140943.
17 ZHOU Shiliang， ZEIER W G， KEMEI M C，et al.Hydrothermal preparation and magnetic properties of NaFeSi2O6：Nanowires vs bulk samples［J］.Inorganic Chemistry，2014，53（23）：12396-12401.
18 LIU Huanhuan， TIAN Kunfei， NING Jiqiang，et al.One?step solvothermal formation of Pt nanoparticles decorated Pt2+-dopedα-Fe2O3 nanoplates with enhanced photocatalytic O2 evolution［J］.ACS Catalysis，2019，9（2）：1211-1219.
19 IBRAHIM I， KALTZOGLOU A， ATHANASEKOU C，et al.Magnetically separable TiO2/CoFe2O4/Ag nanocomposites for the photocatalytic reduction of hexavalent chromium pollutant under UV and artificial solar light［J］.Chemical Engineering Journal，2020，381：122730.
20 KATABATHINI N， MAKSOD I H A EL， MOKHTAR M.Cu，Fe and Mn oxides intercalated SiO2 pillared magadiite and ilerite catalysts for NO decomposition［J］.Applied Catalysis A：General，2021，616：118100.
21 Zengqiang CI， YUE Yanxue， XIAO Jingting，et al.Spectroscopic and modeling investigation of U（Ⅵ） removal mechanism on nanoscale zero?valent iron/clay composites［J］.Journal of Colloid and Interface Science，2023，630：395-403.
22 BAO Chaosheng， WANG Hu， WANG Caiyun，et al.Cooperation of oxygen vacancy and FeⅢ/FeⅡ sites in H2-reduced Fe-MIL-101 for enhanced Fenton?like degradation of organic pollutan?ts［J］.Journal of Hazardous Materials，2023，441：129922.
23 LIU Zishuai， HUANG Jing， ZHANG Yimin，et al.Separation and recovery of iron impurities from a complex oxalic acid solution containing vanadium by K3Fe（C2O4）3·3H2O crystallization［J］.Separation and Purification Technology，2020，232：115970.
24 WU Junshu， WANG Jinshu， DU Yucheng，et al.Chemically controlled growth of porous CeO2 nanotubes for Cr（Ⅵ） photoreduction［J］.Applied Catalysis B：Environmental，2015，174-175：435-444.
25 LEI Dashi， XUE Juanqin， PENG Xiangyu，et al.Oxalate enhanced synergistic removal of chromium（Ⅵ） and arsenic（Ⅲ） over ZnFe2O4/g-C3N4：Z-scheme charge transfer pathway and photo?Fenton like reaction［J］.Applied Catalysis B：Environmental，2021，282：119578.
26 JIANG Bo， GONG Yifan， GAO Jianan，et al.The reduction of Cr（Ⅵ） to Cr（Ⅲ） mediated by environmentally relevant carboxylic acids：State?of?the?art and perspectives［J］.Journal of Hazardous Materials，2019，365：205-226.
27 NIU Weiya， SUN Jie， ZHANG Ling，et al.The enhanced removal of highly toxic Cr（Ⅵ） by the synergy of uniform fiber ball loaded with Fe（OH）3 and oxalate acid［J］.Chemosphere，2021，262：127806.
28 KRETSCHMER I， SENN A M， MEICHTRY J M，et al.Photocatalytic reduction of Cr（Ⅵ） on hematite nanoparticles in the presence of oxalate and citrate［J］.Applied Catalysis B：Environmental，2019，242：218-226.
29 ZHANG Ling， SUN Jie， NIU Weiya，et al.The synergetic role of rice straw in enhancing the process of Cr（Ⅵ） photoreduction by oxalic acid［J］.Environmental Pollution，2020，265（Pt A）：115013.
Options
Outlines

/

〈 〉



Copyright © 2021 Editorial Office of Inorganic Chemicals Industry

Add:No.3 Road Dingzigu,Hongqiao District,Tianjin,China

E-mail：book@wjygy.com.cn 违法和不良信息举报电话: 022-26689297