定向转化策略创制氮氧化物光催化剂

doi:10.19964/j.issn.1006-4990.2021-0743

摘要/Abstract

摘要：

太阳能高效转化与利用是解决能源和环境两大问题的理想途径,而提高窄禁带半导体的光催化活性是有效利用太阳能资源的重要策略。其中,氮氧化物在可见光区有较强的吸收,被认为是一种潜在的可见光区光催化材料。当前,氮氧化物主要通过热氮化获得,即氨气在1 173~1 373 K条件下持续通过氧化物10 h以上。由此制备的氮氧化物往往只暴露低活性晶面,且生成的大量还原态缺陷可作为光生电荷的复合中心,严重制约了其在光催化领域的广泛应用。为此,总结了一种定向转化策略创制高质量氮氧化物光催化材料。该策略通过选取含挥发组分的氧化物前驱体实现对氮氧化物缺陷和晶面的有效调控,为其在太阳能光催化领域中的广泛应用奠定基础。同时,此定向转化策略可拓展到其他材料体系,为开发高效光催化剂提供新思路。

关键词: 定向转化, 窄禁带半导体, 氮氧化物, 光催化水分解

Abstract:

The efficient conversion and utilization of solar energy is an ideal way to solve the two major problems of energy and environment.Improving the photocatalytic activity of narrow bandgap oxynitrides is of significant importance as the means of realizing efficient visible-light-driven water splitting for solar energy.Among the various photocatalysts,oxynitrides have strong absorption in the visible region,which are considered to be potential photocatalytic materials in the visible region.Cur-rently,oxynitrides are mainly obtained by thermal nitridation,which mainly involves the continuous passage of ammonia gas through the oxides for more than 10 h under the condition of 1 173~1 373 K.The prepared oxynitrides only expose low-active crystal facets,and a large number of reduced defects can be used as the recombination center of photogenerated charges,which seriously restricts their wide application in the field of photocatalysis.In this case,a novel oriented transformation strat-egy to create high-quality oxynitrides was summarized.This strategy achieved effective control of oxynitrides defects and crys-tal facets by selecting oxide precursors containing volatile components,laying the foundation for its wide application in the field of solar photocatalysis.At the same time,this oriented transformation strategy could be extended to other material sys-tems,providing new ideas for the development of high-efficiency photocatalysis.

Key words: oriented transformation, narrow-band semiconductors, oxynitrides, photocatalytic water splitting

中图分类号:

O643.32

王鑫,薛冬峰. 定向转化策略创制氮氧化物光催化剂[J]. 无机盐工业, 2022, 54(3): 1-6.

WANG Xin,XUE Dongfeng. Preparation of oxynitrides photocatalysts by the oriented transformation strategy[J]. Inorganic Chemicals Industry, 2022, 54(3): 1-6.

图/表 3

图1

图2

图3

参考文献 22

[1]	GONG J, LUQUE R. Catalysis for production of renewable energy[J]. Chemical Society Reviews, 2014, 43(22):7466-7468.
[2]	吴玉琪, 靳治良, 李越湘, 等. 半导体光催化剂制氢研究新进展[J]. 分子催化, 2010, 2(4):171-194.
[3]	SANG Y, LIU H, UMAR A. Photocatalysis from UV/Vis to near-infrared light:Towards full solar-light spectrum activity[J]. ChemCatChem, 2015, 7(4):559-573.
[4]	XIAO M, WANG S, THAWEESAK S, et al. Tantalum(oxy)nitride: Narrow bandgap photocatalysts for solar hydrogen generation[J]. Engineering, 2017, 3(3):365-378.
[5]	刘美英, 由万胜, 雷志斌, 等. 可见光作用下LaTaON₂催化剂光催化分解水制氢[J]. 催化学报, 2006, 7(2):556-558.
[6]	MORIYA Y, TAKATA T, DOMEN K, et al. Recent progress in the development of (oxy)nitride photocatalysts for water splitting under visible-light irradiation[J]. Coordination Chemistry Reviews, 2013, 257:1957-1969.
[7]	SEO J, HISATOMI T, NAKABAYASHI M, et al. Efficient solar-dri-ven water oxidation over perovskite-type BaNbO₂N photoanodes absorbing visible light up to 740 nm[J]. Advanced Energy Materials, 2018, 8(24).Doi: 10.1002/aenm.201800094.
[8]	SIRITANARATKUL B, MAEDA K, HISATOMI T, et al. Synjournal and photocatalytic activity of perovskite niobium oxynitrides with wide visible-light absorption bands[J]. ChemSusChem, 2011, 4(1):74-78.
[9]	HISATOMI T, KATAYAMA C, MORIYA Y, et al. Photocatalytic oxy-gen evolution using BaNbO₂N modified with cobalt oxide under pho-toexcitation up to 740 nm[J]. Energy & Environmental Science, 2013, 6(12):3595-3599.
[10]	JADHAV S, HASEGAWA S, HISATOMI T, et al. Efficient photo-catalytic oxygen evolution using BaTaO₂N obtained from nitrida-tion of perovskite-type oxide[J]. Journal of Materials Chemistry A, 2020, 8(3):1127-1130.
[11]	WANG X, HISATOMI T, WANG Z, et al. Core-shell-structured LaTaON₂ transformed from LaKNaTaO₅ plates for enhanced photo-catalytic H₂ evolution[J]. Angewandte Chemie International Edi-tion, 2019, 58(31):10666-10670.
[12]	ZHANG F, YAMAKATA A, MAEDA K, et al. Cobalt-modified po-rous single-crystalline LaTiO₂N for highly efficient water oxida-tion under visible light[J]. Journal of the American Chemical So-ciety, 2012, 134(20):8348-8351.
[13]	WANG Z, INOUE Y, HISATOMI T, et al. Overall water splitting by Ta₃N₅ nanorod single crystals grown on the edges of KTaO₃ parti-cles[J]. Nature Catalysis, 2018, 1(10):756-763.
[14]	FU J, SKRABALAK S. Enhanced photoactivity from single-crysta-lline SrTaO₂N nanoplates synthesized by topotactic nitridation[J]. Angewandte Chemie International Edition, 2017, 56(45):14169-14173.
[15]	TAKATA T, JIANG J, SAKATA Y, et al. Photocatalytic water spli-tting with a quantum efficiency of almost unity[J]. Nature, 2021, 581(7809):411-414.
[16]	OSHIMA T, ICHIBHA T, QIN K, et al. Undoped layered perovskite oxynitride Li₂LaTa₂O₆N for photocatalytic CO₂ reduction with visible light[J]. Angewandte Chemie International Edition, 2018, 57(27):8154-8158.
[17]	JIANG H, CUAN Q, WEN C, et al. Anatase TiO₂ crystals with expo-sed high-index facets[J]. Angewandte Chemie International Edi-tion, 2011, 50(16):3764-3768.
[18]	WANG H, GAO J, GUO T, et al. Facile synjournal of AgBr nanoplat-es with exposed{111} facets and enhanced photocatalytic proper-ties[J]. Chemical Communication, 2012, 48(2):275-277.
[19]	KATO H, KOBAYASHI M, HARA M, et al. Fabrication of SrTiO₃ exposing characteristic facets using molten salt flux and improve-ment of photocatalytic activity for water splitting[J]. Catalysis Sci-ence & Technology, 2013, 3(7):1733-1738.
[20]	XU H, REUNCHAN P, OUYANG S, et al. Anatase TiO₂ single crys-tals exposed with high-reactive{111} facets toward efficient H₂ ev-olution[J]. Chemistry of Materials, 2013, 25(3):405-411.
[21]	ZHU Y, LV C, YIN Z, et al. [001]-oriented hittorf′s phosphorus nanorods/polymeric carbon nitride heterostructure for boosting wide-spectrum-responsive photocatalytic hydrogen evolution from pure water[J]. Angewandte Chemie International Edition, 2020, 59(2):868-873.
[22]	WANG X, HISATOMI T, LIANG J, et al. Facet engineering of LaNbON₂ transformed from LaKNaNbO₅ for enhanced photocataly-tic O₂ evolution[J]. Journal of Materials Chemistry A, 2020, 8(23):11743-11751.

首页

全国无机盐信息中心

中国化工学会

无机酸碱盐专业委员会