Near-infrared Reflective Pigments Based on Cu 2+ and Tb 3+ Codoped BaZrO3: Preparation and Performance

Shao-Dan ZHANG; Wei-Wei BAO; Hai-Ping MA

doi:10.15541/jim20180387

Journals >Journal of Inorganic Materials >Volume 34 >Issue 6 >Page 599 > Article

Journal of Inorganic Materials
Vol. 34, Issue 6, 599 (2019)

Near-infrared Reflective Pigments Based on Cu ²⁺ and Tb ³⁺ Codoped BaZrO₃: Preparation and Performance

Shao-Dan ZHANG¹, Wei-Wei BAO^1、*, and Hai-Ping MA²

Author Affiliations

¹School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, China

²Research Institute of Geological Experiment, Hefei 230001, China

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DOI: 10.15541/jim20180387 Cite this Article

Shao-Dan ZHANG, Wei-Wei BAO, Hai-Ping MA. Near-infrared Reflective Pigments Based on Cu ²⁺ and Tb ³⁺ Codoped BaZrO₃: Preparation and Performance [J]. Journal of Inorganic Materials, 2019, 34(6): 599 Copy Citation Text

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XRD patterns of BaZrO3 pigment calcined at different temperature

1. XRD patterns of BaZrO₃pigment calcined at different temperature

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XRD patterns of Ba1-xCuxZr1-yTbyO3 pigments

2. XRD patterns of Ba_1-_xCu_xZr_1-_yTb_yO₃pigments

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3. UV-Vis diffuse reflectance spectra of Ba_1-_xCu_xZr_1-_yTb_yO₃pigments

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4. NIR reflectance (a) and NIR solar reflectance (b) of Ba_1-_xCu_xZr_1-_yTb_yO₃powdered pigments

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Ref.	Composition
BZ	BaZrO₃
BC 015	Ba_0.85Cu_0.15ZrO₃
BC 025	Ba_0.75Cu_0.25ZrO₃
BC 035	Ba_0.65Cu_0.35ZrO₃
BC 015 T	Ba_0.85Cu_0.15Zr_0.85Tb_0.15O₃
BC 025 T	Ba_0.75Cu_0.25Zr_0.85Tb_0.15O₃
BC 035 T	Ba_0.65Cu_0.35Zr_0.85Tb_0.15O₃

Table 1. Symbols and compositions of Ba_1-_xCu_xZr_1-_yTb_yO₃ pigments samples

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Ref.	(hkl)	(110)	(111)	(211)	(220)	(310)	Average/nm	Volume/nm³
BZ	a=b=c/nm	0.41915	0.41889	0.41908	0.41907	0.41917	0.41907	0.07360
BC 015	a=b=c/nm	0.41705	0.41916	0.41909	0.41880	0.41926	0.41867	0.07339
BC 025	a=b=c/nm	0.41814	0.41811	0.41846	0.41870	0.41885	0.41845	0.07327
BC 035	a=b=c/nm	0.41703	0.41819	0.41849	0.41929	0.41885	0.41837	0.07323
BC 015 T	a=b=c/nm	0.42057	0.41943	0.41925	0.41938	0.41937	0.41960	0.07388
BC 025 T	a=b=c/nm	0.41945	0.41930	0.41922	0.41926	0.41937	0.41932	0.07373
BC 035 T	a=b=c/nm	0.41925	0.41922	0.41917	0.41884	0.41908	0.41911	0.07362

Table 2. Cell parameters of the cubic cell of Ba_1-_xCu_xZr_1-_yTb_yO₃pigments

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Pigment composition	Color coordinates				Band gap/eV
Pigment composition	L^*	a^*	b^*	c^*	Band gap/eV
BZ	95.51	-0.21	0.91	0.93	2.71
BC 015	72.94	0.22	1.18	1.20	2.54
BC 025	64.87	0.56	0.94	1.09	2.53
BC 035	81.78	-0.39	-0.82	0.91	3.25
BC 015 T	73.30	6.28	26.02	26.77	2.59
BC 025 T	76.07	5.08	26.03	26.52	2.64
BC 035 T	80.04	1.33	19.03	19.08	2.70

Table 3. Color coordinates of the Ba_1-_xCu_xZr_1-_yTb_yO₃(x=0.15, 0.25, 0.35; y=0, 0.15) powdered pigments and band gap values

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Pigment composition	BZ	BC 015	BC 025	BC 035	BC 015 T	BC 025 T	BC 035 T
NIR solar reflectance	86.8%	74.8%	68.8%	72.5%	79.8%	80.1%	77.2%

Table 4. NIR solar reflectance of Ba_1-_xCu_xZr_1-_yTb_yO₃ (x=0.15, 0.25, 0.35; y=0, 0.15) powdered pigments

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